should i buy rechargeable batteries: Juli 2012

Selasa, 31 Juli 2012

should i buy Energizer-Eveready 00916 NH22NBP reviews

This Energizer Rechargeable battery not only lives up to its name but exceeds its expectations despite the previous reviewer's uninformative piece. Although this battery is rated at only 150mAh, it actually produces 184mAh which is over 122% of the actual capacity claim from the manufacturer! This result has been obtained by a test done by Rechargeable-Battery-Review.com back in 2007. Energizer has now come up with a 175mAh version which has not only more capacity but works well with the Energizer Family Charger. I have used this product for my wireless Shure microphone and it is more than sufficient. Now that the 150mAh has a huge discount, one should pick up more of these. This product is highly recommended. My alarm clock uses the 9volt as a backup power source in case of power outages and I have several other appliances that uses the 9 volt as well. I was going through a pack of 9-volts very quickly and so decided to make the switch to rechargeable. It's saved me a lot of money, but they don't seem to have a long life. It seems every time I charge one, the amount of time it lasts grows shorter and shorter.Our church uses these for the wireless microphones and they have worked well for several months now. They can be left to charge will last a few services before they need to be charged againI ordered 4 of the Eveready NH22NBP 9V Rechargeable Batteries and just received them this afternoon - a day early - a plus for Amazon Prime and USPS. The batteries were immediately plugged into my 9V charger, but one felt loose, and it was. The positive terminal connector was connected but the battery was not - the little "button" on the battery was still in the charger. At this point, I have 3 batteries that have been charged, but not yet in service with all their connectors so I can report that they all took a charge. My rating is based on poor quality by Eveready and the inconvenience of getting a replacement. This is not Amazon's fault nor USPS. but it is a pain you know where. At a later date I will write a review on at least the 3 that have not lost their buttons - yet. My alarm clock uses the 9volt as a backup power source in case of power outages and I have several other appliances that uses the 9 volt as well. I was going through a pack of 9-volts very quickly and so decided to make the switch to rechargeable. It's saved me a lot of money, but they don't seem to have a long life. It seems every time I charge one, the amount of time it lasts grows shorter and shorter.

Even with its apparent 'half-life', they're still saving me a ton of money and it's better for the environment, so WIN! This battery is one of the most buyed in the world for his quality and the price, i recomend this product and seller. If consider that this battery can be recharged 250 times, the price is lowest if you compare it with others with the same quality but less number of recharged, it is a great deal. Amazon and service go hand in hand. The Quality of their product is always the best. Service and follow through is what I love..
I have been changing all my battery buying to rechargeable style and find Evergizer to last so much longer. I save money buy useing them and have so far less to recycle. So far so good. I haven't had any problems. I got tired of buying expensive 9V battery packs and having to constantly throw them away. This is an excellent alternative. It does what I need it to, so it serves it's purpose.Our church uses these for the wireless microphones and they have worked well for several months now. They can be left to charge will last a few services before they need to be charged again. This Energizer Rechargeable battery not only lives up to its name but exceeds its expectations despite the previous reviewer's uninformative piece. Although this battery is rated at only 150mAh, it actually produces 184mAh which is over 122% of the actual capacity claim from the manufacturer! This result has been obtained by a test done by Rechargeable-Battery-Review.com back in 2007. Energizer has now come up with a 175mAh version which has not only more capacity but works well with the Energizer Family Charger. I have used this product for my wireless Shure microphone and it is more than sufficient. Now that the 150mAh has a huge discount, one should pick up more of these. This product is highly recommendedAt only 150ma discharge these batterys do not live up to the standards of energizer's other rechargable batteries. I have read that they only put out 7.2 volts as well. I have not checked this with my meter but will soon. Avoid this product.

Senin, 30 Juli 2012

should i buy 4 pces of 9V 250mAh reviews

Features and Benefits * High quality 9V rectangular size rechargeable Nickel Metal Hydride (NiMH) battery Ultra high capacity of 250mAh * Exact replacement for standard 9V rectangular size battery * Provides very long use time per charge with this high 250 mAh capacity * Advanced Ni-MH technology means much longer use life per charge than the ordinary rechargeables * Designed for enhanced performance for high drain applications such as: R/C controller detector transmitter paintball guns and other portable high drain digital electronics * Can be recharged for up to 1000 times providing big saving by replacing hundreds of expensive throw away 9V rectangular size batteries. * Convenient operation without memory effect. Can be charged anytime. * Can be rapidly charged with our chargers model BC1HU V1199B V3969A1 V228 T6278 T2299...etc. * Dimensions: (H x L x W): 48mm x 26mm x 16mm. * Weight: 0.1lbs per cell * Battery tested based on International Electronic Commission (IEC) standard to ensure capacity quality and life time The performance of these batteries has been surprisingly good! I've been using them for almost one year now. I use them in a set of Shure wireless mics (see my review of the mics on Amazon.com). They have been doing an outstanding and demanding job. Their capacity is very good. Additionally, I feel environmentally green by using rechargeable battery. They pay for themselves after few recharges easy. I've been very happy with this product. Highly recommended. They came charged and the spec's look good. I have used them now only a few weeks, but they are holding a charge as well as I'd expect. I'll report later if they disappoint me. For now though, I'd recommend. I use them for my DVM and other electronic devicesI bought two of these Tenergy 9V's for the smoke and carbon monoxide detectors in my kitchen (they came as part of a set: . I got fed up with the frequent replacement of alkaline 9V batteries. They'd last a month or two, then the alarm would start chirping annoyingly to indicate the need for replacement. Then I'd have to stand on a chair and tiptoe precariously to reach the ceiling mounted alarm and fumble with the cover.

Not being a well-known brand, I was unsure whether I would be able to rely on Tenergy. But after 8 months of using these and the other sizes, I am pleased with their performance and bought 12 more 9V's for the other detectors in the house and a TENS muscle relaxer. It has been at least 4 months since I inserted the Tenergy batteries into the detectors and they haven't needed recharging yet, so I am quite pleased with their life and energy capacity.

Their price to performance ratio is hard to beat. A regular alkaline Energizer at the local CVS is $5. They can only be used once. These can be recharged hundreds of times, making them very cost effective. (Tenergy claims up to 1000 charges, but real world performance will be a lot less).These are not good batteries. I bought 4 of these a couple of years back. Recently, two of these 4 stopped accepting a charge. My charger [Tenergy T-3969A1] won't even recognize them when inserted into the charger [charging light wont come on]. I researched into this issue on the `net and found out that sometimes the batteries get an open cell. I have not tried the revive methods suggested by some people on those two batteries.

At that point I suspected that the charger went bad so I bought a Maha Powerex MH-C490F Stealth charger. That charger also refused to charge the two bad batteries.

However when I tried to charge the other two batteries... both exploded after about an hour of charging. I suspected that the batteries cannot handle the fast charging action of the Maha MH-C490F charger. Did some research again... found out that the Maha Stealth is rated for 70-90mA. For comparison, I looked at Tenergy's own 9v charger - TN141. That is rated for 100mA. Also on Tenergy's own website says "Can be rapidly charged with our chargers model TN141, TN136, TN137, BC1HU, V1199B, V3969A1, V228. "

Hence it was definitely a bad battery and not the charger which caused these batteries to explode
OR, although these are listed to be capable of rapid charged, in reality, these batteries cannot be rapidly charged. These can be charged only by those old style chargers which put out only 15-16mA like the Tenergy T-228 or T-3969A1.

Interesting point:
The 2 batteries did NOT explode spectacularly; they cracked and the tops popped out. After looking closely I could see that 2-3 of the 8 internal cells had swelled up and leaking fluid. We use these for our lavalier mics and a few other things that take 9v's and they've been perfect for what we need. Well worth the $'s we spent on them, considering how many times we've charged them and would have thrown another 9v alkaline in the landfill. After three months 25% of the tenergy 9v batteries experienced a catastrophic death with cell swelling. Battery was not exposed to any extreme conditions. Surviving batteries performed well. I bought these batteries to use in my bass guitar with active electronics, a battery eating monster! The extra capacity of these batteries insures I don't run out of guitar before I run out of music! I have bought several batteries from this brand. They are great I have others alredy working for 2 years and I keep recharging them. I had missed the square one and now I had them for a month and they work great. The thing to look for in batteries is how much capacity they have the mAH part. The more mAH the better. I got these to use on a garage motion detector and they work okay, but if you get a lot of movement, these batteries don't seem to last too long. At least they're rechargeable though so I've done that a few times already. They may work better on other devices that are not constantly turning on and off even though it's just an LED on the sensor. while these batteries charge quickly and are relatively inexpensive, they do not last as long as normal 9V batteries. A good idea if you have opportunities to swap batteries, but a bad idea if you need these batteries to last 6 plus hours at a time. These batteries are long lasting (can be recharged many times), last for a long time and have a high power density. I bought 4 of these three years ago and they are used hard. Three are still working the fourth was destroyed by accident. So when I needed more I bought the same ones.

Minggu, 29 Juli 2012

should i buy AAA Rechargeable Batteries 820MAH GP reviews

I'm an early adopter of LSD (low-self-discharge) batteries. With dozens of rechargeable AA/AAA cells in use throughout the house, it would be a nightmare to keep ordinary (rapid-self-discharge) type batteries charged at all time. The only drawback of using LSD cells is that they have lower capacity compared to ordinary NiMH cells.

I have tested four of those using my . Right out of the package, the average remaining charge is 692mAh, or 81% of the advertised capacity of '850mAh' (Note: on each cell it actually says 'TYP. 820mAh'). This proves that they are indeed low-self-discharge type. (Ordinary NiMH cells typically arrive depleted due to self-discharge)

After two more Charge/Discharge cycles, the average capacity improved to 880mAh. This is the highest capacity among all name-brand LSD AAA cells, including the (800mAh rated, ~830mAh measured). This capacity is also getting very close to that of ordinary NiMH AAA cells (900-10000mAh), so you get the best of both worlds.

Another thing I noticed is that: those ReCyko+ AAA cells are identical to the both mechanically and electrically. This is actually a good thing, because I have used Kodak Pre-Charged AAA cells for the past 3-4 years, with absolutely no problems. Based on my previous 6-month storage test using Kodak cells, their self-discharge rate should be just as good as that of Sanyo Eneloop.

Presently the GP ReCyko+ AAA is priced about 25-30% lower than other LSD AAA cells, making it an excellent value - just remember to shop around for the best deal.

[Update on June 28, 2011]
Recently I tested the, and obtained even higher average capacity of 975mAh! However, those GP ReCyko+ AAA cells still give you the best value considering the lower cost.

[Update on Dec 18, 2011]
Long-term charge-retention rate: Tested one pair of ReCyko+ AAA cells after 385 days in storage. The average remaining charge is 656mAh, or 77.2% of rated capacity of 850mAh. Although not quite '85%' as advertised, this rate is good enough for all practical purposes. Recyko is the low self discharge nickel metal hydride battery manufactured by GP (Gold Peak - a Hong Kong based company). I find them comparable to other low-discharge batteries from Sanyo, Rayovac, Duracell, Yuasa, etc. Package says 850 mAh, 1.2V. Printed on the battery itself says 820mAh. These batteries does not look as sleek and sexy as the Eneloops; they are wrapped in thin metallic plastic, but for sure pack a lot of juice for the money. Made in China. I needed some rechargeable batteries for around the house and for some digital cameras and I heard good things about these batteries. So I bought these AAA's and some AA's at a very good price. So far the batteries are performing very nicely and they last a long time between charges. I'm very satisfiedThese batteries are everything they claimed to be/do! And they're much less expensive than buying new telephones! I highly recommend this product. these seem to work better than some other brands, i have a solar recharger that brings 4 of these back in about 2 hours. work great in remotes and those LED flashlight requiring 3 aaa batteries.This is my first time getting LSD batteries. These are great. Came nearly fully charges and seem to be lasting as long as any other NiMh battery. Time will tell if these hold up to the recharging cycles (I use LaCrosse intelly chargers so I suspect these will last a long long time). They are powering my ZipZap car remotes and a couple flashlights and lasers. So far all has been excellent. I decided to pick up an 8 pack of these AAA batteries to check them out. I have been using the Eneloop batteries for awhile now, but based on NLee's review figured this might be a way to save a few dollars on the batteries being used in the kid's toys. So far I have been very happy with these batteries, I have not noticed any difference between them and the Eneloops during normal use (primarily in Leap Frog toys and a remote) ... I would recommend this brand of battery if looking for a slightly cheaper alternative to the Eneloops. Outside of the use in Kid's equipment at this time, my primary battery does still remain Eneloops primarily to keep things the same in my collection of rechargeable batteries which numbers about 75 now, but this is still a great battery at a great price. I love these batteries. Nice that they're ready to go. I've been replacing my solar yard lights. I think solar lights are fun and they are a hobby that glows every night. Not many hobbies provide light for your yard for years. These are just the ticket for those fading lights of mine. Straight out of the pack the AAA size GP ReCyko batteries worked well. Although I have not gone through charging cycles, these batteries seem to be a great value compared to conventional and other rechargeable. I am glad I can reduce the number conventional batteries I need, and the toxic waste that goes with them by using these well performing rechargeable batteries. Reduce re-use, recycle.I've used GP batteries for many years in RC racing that puts very high demand on batteries. The GP's have always been known to outlast most others and are very reliable. With the new LCD cells today they are even 1 step better for many slow discharge uses such as remotes and also high useage like flashlights. I fully expect these to last a good life, and all cells charged 890 to 900 mah...better then rating. Excellent value, cheaper, and more runtime then my eneloopsThese batteries are admittedly made in China, but they are an excellent product. I bought 16 and all of them are working on their first charge. Compare to Sony, much less expensive and just as good.

Sabtu, 28 Juli 2012

should i buy Duracell DC2400 Rechargeable Batteries, reviews

I can't believe it! Just when we thought we've got the Duracell battery color scheme figured out, those folks at Duracell pulled another cheap trick out of their collective... hat!

To recall, here is the color scheme for Duracell AA/AAA batteries:
- Duracell alkaline cell has the famous 'copper top' and a black bottom
- Traditional cell is green and black in color
- Newer cell has a 'copper top' and a green/black bottom

The latest batch of rechargeable AA/AAA NiMH cells from Duracell all have the 'copper top' and green/black bottom, similar to that for 'Pre Charged' version. However, those cells don't say 'Pre Charged' on them. Instead, they have their capacity printed (2650mAh for 1000mAh for . It is important to know that: those are NOT the low-self-discharge type like They are traditional NiMH cells, which have higher capacity but suffer from rapid self-discharge problem. So even though their prices may look attractive, those are no bargains.I have had these AAA batteries for a couple of years. I use them for my mp3 player, my Sony sports radio, and my Mighty Bright clip-on light.

These give me about as much power as the regular Duracell Coppertop AAA alkaline batteries.

- Capacity
Although not mentioned in the product description, the capacity of these batteries is 1000 mAH. Duracell also makes these (1000 mAH is the highest capapcity of AAA rechargeable batteries that Duracell makes as of this writing).

- Battery Life
I'm very satisfied with the battery life of these batteries. I frequently use my Might Bright light to read. These Duracell batteries give me 15-20 hours of light before my the light grows noticeably dimmer. After that, I can still squeeze some juice out of them to get a few more hours of usable light. And on my antiquated Cowon iAUDIO 4 player, I get about 10 hours from a single Duracell AAA Rechargeable battery!

I have both an Energizer and a Duracell battery charger. These batteries perform spectacularly no matter which charger I use to charge them.

- Pre-Charged Alternative
Whenever you're in a pinch and need some batteries (say you're out vacationing), instead of buying alkaline batteries, I'd also really recommend that you try these Pre-Charged Duracell Batteries. They're ready to go right out of the package, and after they have been depleted, you can pop them in your charger to charge them right up and reuse them again.

---
These Duracell AAA Rechargeable Batteries last a long time in my medium-drain devices. I'm more than satisfied with the performance on these Duracell Rechargeable Batteries.

Ordered 4 packs, received yesterday, 3 packs are 900 mAh 1 pack is 1000 mAh. They all made in Japan. They are actually repack of Sanyo which is the one of the best rechargeable battery manufacturers. with $10 off $50 promotion even sweeter.

Duracell is and has always been my favorite brand for batteries, they run a little expensive in other places, this is the right store to buy them. Fast delivery at a very good price.Bought the double 4-pack of these AAA-cells to use with cordless phones at home. The standard batteries for these phones are rated 700ma. These Duracells are rated 1000ma. As with a car battery, extra current-capacity should offer longer and more reliable performance over the normal lifetime of the batteries. Not so here. The first two of the eight stopped taking a charge less than 3-months after installation. A month later, two more gave out, then the others in quick succession. None of the batteries was subjected to heavy use or any abuse. The telephones draw less current, for example, than a typical small digital camera. A positive note is that when the batteries WERE working, accepting a charge, they did their job well, holding the charge, as expected, for longer than the factory-supplied lower-milliamp AAA cells.

For reference, the batteries being reviewed here are the DC2400/AAA-RCHGx4 cells, 2x4-pack. Duracell also offers newer HR03 DX2400/AAA-RCHG-STAYx4 DX-Series AAA-cells, these rated at a lower 800ma capacity but, supposedly, more reliable. They sell on Amazon for the same price. For my money, though, after the poor performance of the batteries reviewed, I will go with "Energizer" brand batteries next time, as they were good about replacing an out-of-warranty battery-charger for me last year. Whatever you do, avoid ANY product made by Ray-O-Vac. They have always been garbage and have corroded and destroyed more than one device I've owned.I couldn't believe the value for these rechargeable batteries. I recently bought two at Radio Shack and paid
$17+ for them. I required them for my phones and now they are working fine. Highly recommended. For some odd reason the charger was not shipped with these batteries double pack. Yet I also ordered the batteries and the charger to be sent to family before xmas same day as I ordered the same for self. They got theirs before Xmas both together in one box. But the batteries came two days after Xmas here and my account still shows no shipping on the charger. Now that would be fine but the batteries say they ship fully charged. And I inserted 3 pairs and they worked fine. But one pair did not. Not charged? I put back the orginal duracells non rechargeables that were in the item and they worked fine. We did this 4 times as my husband refused to grasp it himself and I'd already did it but he needed his own double check...before concluding the batteries or one at least was dead. So I go on line to my account to see if by now the charger has shipped. NOPE...very very strange. On the glass half full perspective at least our follow up gift of batteries and charge to go with the battery needing gift...got to that house together and before Xmas. And yes they said they were in stock the say I bought and they still show everything in stock. I dropped it only one star because they promised a full charge when we got them and obviously that's perhaps only partially true. But I look forward to using these with battery operated candles so I feel I can use them more than I do otherwise often removing the batteries each season and putting the candles away. I'd like to use these outdoors under our patio roof in the summer too. These should keep them glowing and me happy. I wish Duracell would turn the whole bottom GREEN not just a bit of it. Would help to make sure they don't get confused and thrown away as regulars. I can wish........otherwise it's all good. Rechargeable batteries are perfect for use in my bicycle headlight; wireless headset that I use with my computer; flash lights and R\C cars; my old Kodak camera. I recently bought a Duracell charger for the DC2400 batteries which recharges the batteries quickly. The DC2400 batteries hold their power, which lets me switch batteries in my wireless headset that have been in use for more than a week, about 80 hrs. My cordless phones were dropping off during conversations. I realized they were more than 3 years old and needed new rechargeable batteries. The prices at The Shack were a bit high for me. I found these batteries on Amazon. Not only was the price reasonable for the amount of batteries but I received them in a less than a week. Now all four phones work great and my wife and I don't get aggravated any more.

Jumat, 27 Juli 2012

should i buy Duracell Value Charger With 4AA reviews

This package includes four new Duracell 'Pre Charged' NiMH AA cells, plus a simple charger. The batteries are similar to the Sanyo eneloop low-self-discharge cells. In fact, based on their identical technical specifications and physical shapes of (+) and (-) terminals, I am convinced that the is actually underneath a different wrapper. Therefore all the good things you heard about eneloop apply to Duracell 'Pre Charged', too.

The 'value charger' (CEF14) included here, however, is not a good value because:

1. It is a timer-based dumb charger, meaning that it doesn't detect when cells are full charged. It simply charges at 360mA for 6 hours and turns off. You have to wait until your cells are fully exhausted before recharging, otherwise they will be over-charged. With a 'smart' charger, you may choose to top-off your rechargeable cells any time.

2. It can only charge either 2 or 4 AA cells in pairs. This is very inconvenient if you have appliances that require odd number of cells.

3. It can only charge two AAA cells, and you cannot charge any more AA cells at the same time.

My advice is to get the package for just a few dollars more (*). It comes with four Duracell Pre Charged cells (2xAA + 2xAAA), but the included charger (CEF23) is far superior in every aspect. It even operates from your vehicle battery, and doubles as an USB charger, too.

[Update on Dec 24, 2008]
I was only half-right when I boldly proclaimed that "Duracell Pre Charged AA are rebranded Sanyo eneloop cells" in my original review. It turns out that the first batch of Duracell AA cells I bought from Amazon are made in Japan, and those are identical to eneloop (both mechanically and electrically). But lately I bought some more Duracell AA from a warehouse club. Those are made in China, and they are identical to the Rayovac Hybrid.

[Update on Feb 15, 2010]
I have confirmed that the new Duracell 'Value Charger' has several improvements over the old model:
- Works from 100-240V AC (instead of just 120V AC)
- Able to charge 4 AAA at a time (instead of just two)
- Semi-smart charge termination (stops when BOTH cells are fully charged)
The only remaining drawback is thet it charges in pairs only.

(*) [Update on Oct 7, 2010]:
Duracell has discontinued the excellent CEF23 charger (at least in the US) last year. So prices for the remaining inventory have skyrocketed. If you need an inexpensive charger that can handle individual cell, consider theI purchased the CEF14 charger with four batteries and the charger supplied is not the same one pictured, nor is it a "dumb" charger as some have described. It can also charge four aa or aaa batteries and is not limited to two aaa's again as some have described. When I tested it, different batteries charged at different speeds and the charger switched modes to a trickle charge when a set became fully charged.

As for the batteries themselves, they do indeed seem to be comparable to Sanyo Eneloops or Rayovac Hybrids at a slightly lower price.

Not sure how Duracell did it, but they solved the one con with the Ni-mH type batteries. These pre-charged, Ni-mH batteries don't discharge when not being used, so they're perfect for digital devices. This charger with 4 batteries doesn't cost much more than just the 4 batteries alone. Here's what you do: acquire twice as many of these batteries w/ the green label as what your digital camera will take. While you're using one set in your camera keep the other set in this charger. Then, when the set in the camera go dead, just swap them out with the set that's in the charger. You've always got a set of fresh batteries and no waiting for batteries to charge, plus no buying batteries for a long time. This is more expensive initially but saves a lot of $$$ in the long run. I love these batteries and charger so much that I have replaced all the AAA and AA batteries in our house with rechargeables. I love that it can charge both types of batteries. The price really can't be beat (of both the charger and the batteries) and it is so much better for the environment than using the disposable ones. I used to have the corded version that everyone likes so much but I like this one better as it folds up quickly and easily for storage. The corded version also seemed to drain the batteries if you left them in there where this one doesn't. Very compact and out of the way when charging as well. Bought these batteries hoping to save money as I go through a lot of AA batteries. These seemed perfect since I could keep them constantly charged. Long story short, they don't work. Not only were they weakly charged fresh out of the package (I compared them to the used battery already in the unit and it put out more juice), the charger itself was kaput. I tried it in several ACs and the red light never came on. Going back to regular. a very good buy for the money.duracell seem to last longer than other brands ive tryed.i need to buy another for different sizes. It is really useful to be able to charge both double A and triple A batteries. I bought another one of these so I can charge four double A and four triple A batteries.I go through a lot of throw away batteries. I decided to make a large one-time investment and purchase rechargeable batteries and chargers. I bought this plus extra batteries, a Ray-O-Vac Charger and extra Ray-O-Vac batteries and have no regrets over the purchase. The charger and batteries work as advertised and arrived promptly. As advertised, batteries arrive charged and they hold their charge well while waiting to be put to use. They charge quickly and can charge in any charger, not just the Duracell one. The charger has a small red light on front that lights up when charging and shuts off when the batteries are charged. There is no cord; the plug is built into the unit and folds out for use. I'd say it takes about 6 to 8 hours for the batteries to charge. A great investment I will use over and over again. This is a product I can recommend without hesitation. Semms like I received somes return and was sold to me as new. The bottom of the packeage has been opened by someone other than me. If I paid for new I expect new. I have no idea how this works as of yet, as I am a little ticked off at the moment. When I get around to trying this out I will update. While some people seem to have had trouble with this charger, it has worked well for me. The batteries charge up without any trouble and I always watch for the green light to come on as I put it where I can watch for it to finish. I have only used it on AA batteries so far but it has worked well and it hasn't taken as long for them as the six hours listed, but lately I have only been charging two at a time. Its price is attractive and nothing to say about it. But one thing you should keep in mind is that you have to plug in two batteries on one side in order to recharge. Anything else is good.

Kamis, 26 Juli 2012

should i buy SANYO 4-Position Ni-MH reviews

Eneloop batteries offer exceptional shelf life so you can use your rechargeable batteries when and where you need them most. You can charge your eneloop batteries once, store them away for up to three years and use them at a moment's notice. After charging eneloop batteries they will maintain 75% of their capacity for up to three years. They are ready to be used immediately right out of the pack. The AC charger is designed to accept charging 2 or 4 pcs. AA or AAA Ni-MH rechargeable batteries. A convenient charging indicator light will flash while charging and then stay on once charging has been completed. The time needed to completely recharge fully discharged AA Ni-MH batteries is approximately 10 hours and 7 hours for AAA Ni-MH batteries. I have done extensive testing on thesince early 2007, shortly after they were introduced in the US. I have also tested the blue second-generation eneloop cells from the back in 2010. But this is the first time I have seen second-gen eneloop in white wrappings being sold in the US. With so much talk about counterfeit eneloop going around, I was understandably cautious when I purchased those

I tested four of those cells, using my old
- Right out of the package, their average remaining charge is 1568mAh, or nearly 80% of the rated capacity of 2000mAh. The spread is also very small, from 1558 to 1577mAh. This proves that they are indeed low-self-discharge type. (Date code on my cells says "11-01", or Jan 2011)
- After one recharge/discharge cycle, their average capacity improved to 2115mAh
- After two more recharge/discharge cycles, their average capacity leveled off at 2133mAh, or more than 6% higher than the rated capacity.

The above results are very consistent with what I have previously observed, while testing second-gen eneloop cells in the Costco package. Therefore I'm convinced that those are indeed genuine second-gen Sanyo eneloop cells. (See the scans I uploaded to Customer Images section, if you need to distinguish between old and new eneloop cells)

On the other hand, currently the prices of those new eneloop cells are about 25-50% higher than that of the original eneloop cells. So one may question: do the new eneloop cells offer sufficient improvement over the old, to justify the price different? Let's compare the following factors:

- Cycle Life: The 2nd-gen eneloop claims to "recharge up to 1500 cycles", while the original only claims 1000 cycles. This 50% improvement looks great on paper, but note that if you recharge your eneloop cells twice every week, it will take 10 years to reach 1000 cycles. So in real life, most average users will never notice the difference.

- Self-Discharge Rate: The new eneloop cells claim to "maintain 75% charge after 3 years", while the original only claims "80% after 2 years". Again, in real life most people will never notice the difference.

- Capacity: First-gen eneloop AA cells have "Typ 2000mAh, Min 1900mAh" printed on them, while 2nd-gen eneloop AA cells only say "Min 1900mAh". But in fact they have the same capacity rating of 2000mAh (typical) according to official Sanyo web site. My measured capacity numbers are actually around 2100mAh for both versions.

BOTTOM LINE:
Both the new and old eneloop cells are excellent products. You can safely mix and match them in any application, and probably nobody can tell the difference in the next 10 years. But in case you can't decide which version is a better value... Just flip a coin and pick one - you can't lose either way!

[Update on July 31, 2011]
Long term self-discharge data: I have tested a pair of new eneloop AA cells after 104 days sitting on the shelf (the batteries, not me). The average remaining charge is 88.7%. This charge-retention rate is slightly better than that of the original eneloop, but the difference is within margin of error for my experiment.

[Update on May 8, 2012]
Nowadays the 2nd-gen eneloop cells are generally priced lower than the original. So you should definitely get the newer version.

Just in case you are looking for my "Sanyo eneloop FAQ", it can now be found here:
http://www.amazon.com/review/R9VPVQ0UO2MKH This package (Sanyo SEC-HR4U4BPN) contains four second-generation eneloop AAA rechargeable batteries. I have tested those cells using my old La Crosse BC-900 Advanced Battery Charger. Here are my findings:
- Right out of the package, the average remaining charge is 640mAh, or 80% of the rated capacity (800mAh)
- After the first recharge cycle, the average capacity increased to 839mAh.
- After two more recharge/discharge cycles, the average capacity leveled off at 843mAh, or 5% higher than rated capacity.

The above is very consistent with the results I obtained last year, while testing 2nd-gen eneloop AAA cells from the Costco package. Therefore I have no doubt that those batteries are genuine. Date code embossed on them says "10-12", which means Dec 2010 (see my upload in the "Customer Images" section, if you need to know where to find the date code).

According to Sanyo press releases, those 2nd-generation eneloop cells offer several benefits over the original eneloop:
- Can be recharged "up to 1500 cycles" (vs. "1000 cycles" for the original)
- Can hold "75% charge after 3 years" (vs. "80% after 2 years")
- Works down to -20 degree C (vs. -10 degree C)

In real life, however, it is nearly impossible for the average user to experience those benefits. Note the even if you recharge your cells twice every week, it will take nearly ten years to reach 1000 cycles. Furthermore, the advertised self-discharge rates for new and old eneloop cells are actually the same during first two years.

As to the capacity: original eneloop AAA cells have "Typ. 800mAh, Min. 750mAh" printed on them. The new eneloop AAA cells only say "Min. 750mAh". This has created confusions for some people, who thought the new version has lower capacity. But according to Sanyo web site, capacity of the new AAA is also 800mAh typical. My own test results, however, have shown that measured capacity of the original eneloop is around 4% higher than rated, whereas capacity of the new eneloop is about 5% higher than rated. Again, the difference is so small that most users will never notice it.

BOTTOM LINE:
Second-generation eneloop cells do offer some improvements over the original, but the actual benefit is very hard to verify in real life. In my case, the price I paid for this new eneloop AAA package is only 10% higher than that of the old one, so I consider it a good deal. If the price difference is much greater, then you have to decide whether it is worthwhile to pay extra for those perceived benefits.

[Update on May 31, 2011]
Prices for the new eneloop AAA have came down further during the past month, so now it is an even better deal. But just in case you are looking for greater bargains, you may want to consider the . They are priced lower than Sanyo eneloop, and have slightly higher capacity (rated 850mAh, measured 880mAh).

[Update on July 31, 2011]
Long term self-discharge data: I have tested a pair of new eneloop AAA cells after 92 days sitting on the shelf (the batteries, not me). The average remaining charge is 89.4%. This charge-retention rate is slightly better than that of the original eneloop, but the difference is within margin of error for my experiment.

[Update on July 3, 2012]
Amazon again combined multiple Sanyo eneloop products (many AA/AAA packages and different chargers) into a single product page. This makes it very difficult for people to find reviews for a specific product. In particular, my "Sanyo eneloop FAQ" was previously attached to the product page of , but now it can only be found by following this link:This package contains four second-generation '1500 cycles' eneloop AA cells, plus the 'MQN06' 4-cell charger

I have tested those new second-generation eneloop cells about one year ago from the and also more recently from the . I can honestly say that: while both old and new eneloop are excellent products, their difference in performance is hardly noticeable. Both version have exactly the same capacity rating of 'Typ 2000mAh, Min 1900mAh'. Actual measured capacity, using my old , is actually about 5% higher at about 2100mAh on the average.

Some advertised improvements of the new eneloop cells looked impressive on paper, but not easy to verify in real life. For example, the new cells claim to have 50% longer lifespan (from 1000 to 1500 cycles). But note that even if you recharge your eneloop cells twice every week, it will take about ten years before you can realize the difference in battery lifespan. The new eneloop also claims to "hold 75% charge after 3 years" in storage, while the old one only claims "80% after two year". Again, in real life most users will never experience any difference. But then again, it does give a warm and fuzzy feeling knowing that you are getting the latest and greatest rechargeable batteries on the market. (At least until the 2500mAh Sanyo "eneloop-XX" arrives)

Mechanically, there are some very minor differences between original and new eneloop cells (See my upload in the Customer Images section to distinguish between old and new). Note that there are some confusions about 'vent holes' on the latest eneloop cells. Some poeple even claim that cells without visible vent holes are counterfeits. But I have tested two batches of new eneloop cells with and without 'vent holes', and found them to be identical electrically. So I'm confident that those latest batch I received are genuine.

The Sanyo MQN06 4-cell charger (included in this and many other eneloop packages) is a big let-down. Here's what I don't like about this charger:
- It charges in pairs only. This is very inconvenient for appliances that take odd number of cells. If you try to charge an exhausted cell together with a half-full cell, the charging process stops as soon as the second cell is full, which means the first cell is still half-empty.
- The charging current is very low: 300mA for AA cells, 150mA for AAA cells. That means it take about 7 hours to recharge a pair of exhausted eneloop AA cells.
- If you leave a pair of charged cells in an unplugged MQN06, there is a leakage current of 0.5mA. This means a loss of 12mAh per day. In other words, a set of 2000mAh cells will become exhausted in about 5 months. That wipes out the 'low-self-discharge' benefit of eneloop cells.

CONCLUSION:
Over the past four years, I have found the original Sanyo eneloop cells to be the most consistent and reliable NiMH cells I have ever used. So I can recommend the new eneloop based on my past experience. On the other hand, I find it inexcusable that Sanyo continues to bundle the best rechargeable batteries with such a mediocre charger. So you may want to consider a package that comes with a better charger, such as the , and then buy more Sanyo eneloop cells as needed. This SONY charger can handle each cell individually, and it can be used to recharge any other

Rabu, 25 Juli 2012

should i buy Paradise BA25115 Rechargeable Solar AA 900mAH Batteries reviews

Many folks who are bashing these and other rechargeable AA batteries, because they didn't work well in their solar yard lights, need to get smart and look at what you're replacing.

The vast majority of batteries that come with your solar yard lights are the same physical SHAPE as a AA, but they are NOT AA batteries. They are typically 3.2V Lithium Ion Phosphate, not 1.2V Ni-Cd or Lithium Ion batteries.

So when you buy your yard lights, look at the battery type, its voltage, and its storage rating (most come with 300 to 400mAh batteries). There ARE Lithium Ion Phosphate batteries out there, in the AA form-factor, that are up to 600mAh, which will give you longer run time assuming you have long enough (and intense enough) daylight hours to fully charge them. Also, don't go cheap on your lights... Westinghouse and other name brands will probably charge 600mAh batteries efficiently (due to having a well-made solar cell), while the garbage you buy at places like Harbor Freight (for under $15 per light) is never going to fully charge the batteries they come with, much less higher-capacity batteries.

So remember to do your homework. If you don't know much about basic electricity, ask a friend who does. Don't bash products that you bought to replace a completely different item. After reading the reviews, I decided to take a chance on these batteries for my solar path lighting. I installed them and absolutely nothing happened. They did not charge up at all. I tried to contact the manufacturer to see if there was anything I was missing that might affect charging them, but the website only dealt with the electronics part of the company. The original batteries in my solar lights worked fine, (Seattle area weather not withstanding) so I don't know why these batteries wouldn't charge. After contacting Amazon about it, I decided to return them.

should i buy Sanyo Eneloop AA NiMH Pre-Charged reviews

The Eneloop 8 pack AA 2000 mAh is pre-charged and ready to use right out of the pack, very slow self discharge maintains 85% residual capacity, and combines all the features of an alkaline battery with the benefits of Rechargeable. My original review on the Sanyo eneloop NiMH cells was written nearly two years ago. Since then, I have learned a lot more about the characteristics about eneloop and other low-self-discharge cells. So it is time to clear up some inaccurate information I wrote about eneloop's self-discharge rate.

1. I was told that the Sanyo eneloop cells were not 100% fully charged when they leave factory. This makes sense because new cells are fast-charged in the factory to save time. In order to avoid problem with heat and gas built-up, they cannot be charged to 100%. I have tested some eneloop cells that were manufactured 20 months ago, and they still maintained about 70% charge. On the other hand, cells manufactured 6 months ago contain about 75% charge. This confirmed that the discharge rate is much lower than I previously estimated.

2. The self-discharge rate of eneloop (and other LSD cells) is not linear! My own testing showed that a fully charged eneloop may lose 10% of its initial charge during the first month of storage, but in the second months it may lose just 2-3%. The rate becomes even slower after three months. In fact, my 5-month self-discharge test using various brands of LSD cells gave nearly identical results as my previous 3-month test.

3. When an eneloop cell is freshly charged, its capacity actually measures at about 5% higher than its rated capacity (2100mAh vs. 2000mAh). In my previous tests, I used measured capacity as base to calculate the percentage loss. This results in apparently higher percentage loss. Had I used the rated capacity as base value, the self-discharge rate would be about 5% lower.

Based on the above revelation, I believe Sanyo's claim about eneloop (maintain 85% charge after one year, 80% after two year) to be accurate. Therefore the title of my previous review ("The News of LSD Has Been Slightly Exaggerated") has to be replaced.

Over the past two years, I have tested several different brands of LSD cells available from Amazon.com, including . They have all performed very well - practically no difference from the Sanyo eneloop. So the bottom line is: just pick which ever brand of LSD cell is on sale, and you can't go wrong.

[Update on April 21, 2011]
- After testing and using various brands of LSD cells over the past four years, Sanyo eneloop cells have proven to be the most reliable and consistent of them all. I now have to recommend Sanyo eneloop over all others brands.

- Recently Amazon started to offer the cells, at around 25% higher price. In my testing, the improvement of the new eneloop over the original is hardly noticeable. So you'll have to decide whether it is worthwhile to pay the extra cost.My original review below was written back in 2007, when the Sanyo eneloop first became available
through Amazon.com. Part of my initial estimation about eneloop's self-discharge rate turns out to be inaccurate. Please see my other Amazon spotlight review for updated information.

[Original Review follows]

According to Sanyo, the new eneloop LSD (low self-discharge) NiMH batteries can maintain 85% of its original charge after 1 year of storage. This claim is slightly misleading, because it is based on simulation test at 20 degree C. At higher temperature, the self-discharge rate is likely to be much higher.

I have tested five of those AA cells (details are given in my review for the eneloop 4-pack). The average energy loss is about 26% after less than 6 months of storage, based on manufacturer date codes. This self-discharge rate is about 3 times higher than what Sanyo claimed. However, it is still 6 times lower than that of ordinary NiMH batteries. Therefore I'm in the process of replacing most of my existing rechargeable cells to the Sanyo eneloop.

Thanks to lower self-discharge rate, you'll discover a lot more applications for eneloop cells in your house, such as in clocks and remote controls. Do NOT use those cell in smoke detectors, since their discharge voltage profile is very different from that of alkaline cells. Also, don't use them as emergency flash lights batteries in your car, because the higher temperature during summer time will probably nullify the advantage of LSD.

[Update on Jan 13, 2007]
I have tested six new eneloop AAA cells, dated "2006-06'. The average residue charge is 589mAh, and the freshly charged capacity is 827mAh. This implies a self-discharge rate of 29% in 7 months, which is consistent with the rate for AA cells (26% loss in 6 months).

[Update on Jan 29, 2007]
The Rayovac "Hybrid" rechargeable NiMH batteries are now available at Walmart, priced at only $[...] for 4-pack of AA or AAA cells. It is also advertised to have low self-discharge rate, but not as low as that for eneloop. The eneloop is supposed to retain 85% charge in 12 months (when stored at 20 degree C), whereas Hybrid is supposed to retain 80% charge in 6 months (no mention of temperature)

I received several sets of Eneloops in February and label told they were produced in April - so they sat at warehouse for nine month. I put them into camera and they worked just fine. Kudos Sanyo!

I should also mention that Sanyo includes reusable battery holders with each set of four. These holders do not look very sturdy, but they perfectly usable.

Technically, Sanyo solved the main problem with NiMh technology - frightening self-discharge rate (up to 40% a month for standard cells). By doing this Sanyo reduced cell capacity down to 2000 mAh from today's top line of 2700 mAh.

Simple calculation shows that due to self-discharge a good 2700 mAh battery holds only around 2000 mAh after a month and a half.

So the answer to the question "which battery is better - Eneloop or standard NiMh" - lies in the usage pattern.

If you always keep batteries in your camera in top-notch charged condition, then standard 2700 mAh set is a winner. For occasional shooters who always forget to charge batteries (like me), Eneloop makes lot of sense because in three month I get around 1900 mAh out of Eneloop and only 1400 mAh from the standard cell. So Eneloop is a winner for everyone who keep batteries inside the camera or any other device for more than 6 weeks.

And, well, if paragraph above looks too technical with too many details and numbers - then Eneloop is a clear winner too, because it just behaves the way battery should behave - without forcing users to know how it works.

This observation made me buy additional sets of AAA Eneloops to use in my wireless mouse, keyboard, voice recorder and LCD flashlight. It should be taken into account that Eneloops are four times more expensive than Alkaline cells, so it is reasonable to use them for devices that require fresh batteries at least twice a year. What are you looking for in a rechargeable battery? Long life? Easy recharging? Excellent performance over the years?

Check, check & check.

I've been using these for over 2 years and they still perform like they are brand new. They're used in Xbox controllers, TV remotes, etc. We use them until they are completely dead then stick em in the Sanyo charger. The charger can hold up to 4 AA batteries. You have to have 2 batteries in together in order for the charger to work. There are 2 independent charge indicators. The green LED flashes when its charging, then turns sold green once they are fully charged.

Take a look at how many of your devices use AA or AAA batteries and then order the total number plus some extra. It might seem like a lot of money up front but if your kids play Xbox you know how fast those batteries die - I probably made my money back in saved battery purchases in 2 months. Of all the rechargeable 'AA' batteries I've used in the past 10 years, these are the only ones that haven't died and continue to hold a charge for extraordinary amount of time.

With the extremely low discharge rate, I even put them into wall clocks and the clocks run for many months. They're my favorite rechargeable batteriesHave used the charger and batteries for over three months now with no loss of performance or any problems of any kind. We use the batteries to run a various appliances and radios. Shipping was fast and the order was without any problemsI'm a photographer and of course prefer to shoot with a dslr, but I have this and another 4 pack of batteries that came with the designed charger. They always work for me, last a long time, and definitely hold a charge. I've owned them since 2009 and get lots of pops in an external camera flash, or hundreds of pictures or lots of video on one charge. Definitely a reliable rechargeable battery.

Selasa, 24 Juli 2012

should i buy Tenergy T9688 Super Universal LCD reviews

Features ? Recharges batteries in single or group - with 4 individual charging channels for AA/AAA/C/D batteries and 2 individual channels for 9V batteries ? Automatic charge and discharge function ? Powered by an external AC adaptor (100-240V AC) for worldwide use ? Intelligent microprocessor controlled ? Automatic charging current selection for the different size of batteries ? Unique designed with blue Electric LCD screen to indicate the battery status: Charge, Discharge, Full, Bad ? With backlight button - press it once and the backlight will turn on for 10 seconds under trickle charging mode Safety Features ? With negative delta V (- ?V) cut-off function (except for 9V batteries) ? With safety timer control for overcharge protection ? With short circuit protection ? With non-rechargeable/bad cell detection ? With mechanical protection against reverse polarity High Capacity Rechargeable Batteries * High quality D size 10,000 mAh high capacity nickel hydride metal (Ni-MH) rechargeable batteries * Ultra long running time with this 10,000 mAh high capacity * Very long life time and can be recharged up to 1000 times. * Can provide over 000 savings over the life time of this rechargeable batteries by eliminating the need to buy hundreds of D-size Alkaline batteries which cost .50 a piece. * Exact replacement for standard D size batteries and NiCd rechargeable batteries * Convenient operation due to that advantage that Ni-MH batteries have no memory effect. Can be charged anytime -Can be rapidly charged with smart chargers and universal chargers * Battery tested based on International Electronic Commission (IEC) standard to ensure capacity, quality and life time Technical Specifications * Dimension: Height 60 mm, Diameter 33 mm * Weight:0.36lbs per cell * Capacity: 10,000 mAh * Voltage: 1.2V * Standard Charge: 15 hours @ 800 mA * Rapid Charge: 3 hours @ 4000 mA * Data sheet: D size 10000mah. Good product, looks good, works as advertised, especially i like the individual battery indicators, also it identified a bad battery(the old one i had for some time) in less than a minute. Included 10000 mAh batteries hold the charge very well so far. I will recommend this package. I bought 16 batteries plus the charger, best money spent. They have long lasting power and fully charge with in 7 hours. I use them in my newborns swing and my trail cameras. VERY HAPPY! Shipping Cost/Time and Price of Product were the Best I could Find.

I am using 8 of the D Batteries Power my Harmon Kardon Go + PLay iPod Docking Station and it is Pumping Out the Jams.I wasted SO MUCH money on D cell batteries for all of my 2 year old son's toys, that when the batteries would die, I would almost cry having to buy another pack! D cell batteries are $15-20 for an 8 pack! And with the usage of my son's toys, they were dying after a week, so I was literally spending $30-40 on batteries every week and then they go in the trash!

I have a million rechargeable AA and AAA batteries, but it never occurred to me that maybe there are rechargeable D batteries! When I realized this, I went in search of the best ones I can get for the price. And these are FANTASTIC!!! So great in fact, that I brag to all my friends who are still wasting money on all their kids' toys and delay buying these. Now when one of the toy's D cell batteries die, I get so excited that I can just interchange them with charged batteries! Each time I'm reminded that I'm putting $15 in my pocket!

The charger charges 4 D cell batteries for about 8 hours. No biggie, I just let it run overnight and by morning, my son's toys are ready to go! I'm even thinking of buying another set of 8 Tenergy D batteries. So happy I found this... if only I had bought these sooner! Ugh! How much money I would have saved myself.Good, quiet charger, my first ones fan was very noisy. it charges a wide variety of batteries, but despite the companies claims I have had 3 batteries go dead and the charger just keep trying to charge the battery. I purchased this product so that I wouldn't have to buy so many batteries for my babys swing. I love it!! The charge on the batteries lasts for a long long time. The charger is simple and easy to use and lets you know how the charging process in comming along. I really recomend this product. I purchased this set 6 months ago for my Ghetto Blaster that uses 10 D size batteries. They charge in 6-8 hrs and last about 10-15 hrs on and this is medium volume at the beach.Batteries perform as described. They don't last as long as alkaline, but they are very close and they bring you peace of mind for saving the environment and saving your money. I use them in a baby swing and a boom box with very good results. The charger is medium-high quality and it does the job with success. Do not buy this brand. They don't hold the charge and cannot be discharged or re-charged. I wasted my money trying to save money! Great charger, easy to use however 3 of the 8 batteries which came with the charger were bad and did not hold a charge. I bought 16 batteries plus the charger, best money spent. They have long lasting power and fully charge with in 7 hours. I use them in my newborns swing and my trail cameras. VERY HAPPY! Good product, looks good, works as advertised, especially i like the individual battery indicators, also it identified a bad battery(the old one i had for some time) in less than a minute. Included 10000 mAh batteries hold the charge very well so far. I will recommend this package.

Senin, 23 Juli 2012

should i buy Sanyo Eneloop AA 16 Pack reviews

An extra of 500 charging cycles - instead of being rechargeable 1000 times, the new eneloop is even rechargeable up to 1500 times. Improved self-dischcharge. Even though the self discharge of the old eneloop was already very impressive, you can store the new eneloop for 3 years and still it will retain 75% of its capacity. You need a battery, which is reliable even when having cold temperatures? Before eneloop was suitable for temperatures as low as -10°C - now even until -20°C. The new eneloop is even more environment-friendly as it is pre-charged with solar energy in Japan There are some heated accusations asserting that those new (1500 cycles) eneloop cells sold by Amazon partners are counterfeit products. However, notice that none of the accusers actually bothered to test the batteries they received, to verify whether those are indeed fake eneloop cells. They simply recited (mis)information circulating on the Internet as 'proof'.

I ordered the new and they arrived in two 4-packs. The packages are shiny and looked different from the blue/green version found on other product pages (such as the . With so much talk about counterfeit eneloop going around on the Internet, I was initially suspicious about the authenticity of those cells. However, after carefully examining and testing them, I am convinced that those are 100% genuine eneloop cells.

Here are my test results, using the old :
- Right out of the package, their average remaining charge is 1568mAh, or nearly 80% of the rated capacity of 2000mAh. The spread is also very small, from 1558 to 1577mAh. This proves that they are indeed low-self-discharge type. (Date code on my cells says "11-01", or Jan 2011)
- After one recharge/discharge cycle, their average capacity improved to 2115mAh
- After two more recharge/discharge cycles, their average capacity leveled off at 2133mAh, or more than 6% higher than the rated capacity.

The above results are very consistent with what I have previously observed, while testing second-gen eneloop cells in the last year.

To debunk some of the Internet mis-information about alleged counterfeit eneloop cells:

- 'Misprint' found on the battery?
The original eneloop cell contains this warning statement:
"DO NOT DISPOSE OF IN FIRE, NOR SHORT-CIRCUIT."
The newer (1500 cycles) eneloop cell contains this statement:
"DO NOT DISPOSE IN FIRE,NOR SHORT-CIRCUIT."
Some people claim that the missing space between 'FIRE,' and 'NOR' means it is counterfeit. However, the exact same prints are found on the 2nd-gen eneloop cells from the Costco package last year, and even on the newest cells. See the customer image I uploaded to 'Customer Images' section.

- Lack of 'vent holes' on the positive terminal?
Most people don't realize that the actual positive terminal of a NiMH cell is flat. The 'bump' we see is just an attachment, to make the cell physically compatible with old zinc-carbon cells. Those slits we see on the original eneloop cell are not vent holes at all, because the real vent is part of the cell, and is hidden underneath the 'bump'. Sanyo has changed the shape of the 'bump' in the new eneloop cells for cosmetic appearance (I presume), and it has no bearings on the quality of the battery.

In conclusion: Not everything found on the Internet is true (Shocking, I know). So do your own research and find out the truth. At least as of right now, I have seen no evidence that any new 1500-cycle eneloop cells sold by Amazon partners are counterfeits. As Bill Murray said in 'Stripes': "That's the fact, Jack!"

[Update on July 31, 2011]
Long term self-discharge data: I have tested a pair of new eneloop AA cells after 104 days sitting on the shelf (the batteries, not me). The average remaining charge is 88.7%. This charge-retention rate is slightly better than that of the original eneloop, but the difference is within margin of error for my experiment. This is the third time I've ordered eneloops from amazon.
As far as batteries go, these are great. don't have much to compare them to, but the fact they can be charged over and over and over has me buying more and more of these which saves money in the long run.

This loses one star for the following 2 non-performance reasons:
1. They NEVER (these included) come fully charged. These most recent ones have been charging for an hour and they still aren't charged up. My other two purchases took around 3 hours to be fully charged after unpacking(where normal charging is something in the area of 7-8 (I've never timed it).
2. This "16-pack" is advertised as coming with a case. But what it doesn't tell you is the case only works for 4 batteries, not the "16-pack" it is marketed as. And of course, it doesn't come as a 16-pack anyway. The same person that packaged the 4 separate packages of 4 batteries each included just one single 4-pack plastic holder.

Wow! These batteries came amazingly fast, I couldn't have asked for anything better and they were delivered faster than I could have ever thought possible!

The batteries come in 4 separate 4-packs. They also came with 2 battery cases! One that holds 8 batteries and the other holds 4 batteries. This is perfect for me.

Also, the batteries had a full charge when I opened them! I expected less, much less, closer to 50%, I couldn't believe they were still holding full charges, all 16 batteries!

This is my first set of rechargeables and I chose these Eneloop's after reading every single review I could find out there on them. I must say, I'm very impressed. I did date my batteries and categorize into groups of 4 - group A,B,C,D. I'll charge and use each set of 4 together...

So far, these batteries, straight out of the packaging, with no charging have out performed my 8X Lithium Ions I've been using for the last several years! I used these now in my Speedlights and I'm extremely impressed so far with the performance!

Wow, they say that I'll get 1500 recharges out of these, if I get half of that, I'd be thrilled! These batteries put money right back into my pocket! I'll keep 1 pack of the 8X lithium Ions in my camera bag for emergencies, due to their long shelf life, but I'm telling you, I don't think I'll ever need them! These are really great!

I wound up ordering these with some degree of skepticism towards the reviews on line. I had always been used to rechargeables that you had best charge (and trickle charge) up to the point of using them. I have a set of four AA's that I keep in my Canon 430EX II flash and it is ready to go in seconds and delivers rapid recharge times even after sitting in my gear bag for months! I posted a video of this on youtube which can be see if you search for "canon speedlite 430EXII Flash demo." Even on heavier use items (flashlights, wireless headsets, game controllers, camera's) they hold a charge well. Worth every penny with a surprising shelf life! I received my batteries today, one pack was pre-opened. The batteries had a charge and didn't look used but still odd.

The free AA battery holder is REALLY cheap. I will add a customer photo that shows it. It will probably handle being closed and opened < 10 times and then the plastic hinge will fail.With my flash extenders (8 - AA's each) + 4 more AA's in the flash, over 200 strobes flashed for the shoot, and there was still power & ability left. So far I'm real happy with these, and hope I'll get the 1500+ charges out of these! And that they hold their charge while in storage (that will be the next test).Went through the highly discounted overseas purchase of NiMH AA rechargables--they proved to be unreliable and won't take a full charge to their states mA rating. These Sanyo batteries are time-tested and clearly perform as they're supposed to. Currently running 40 of them on a nightly basis without any problemsI bought this pack along with the La Crosse BC-700 charger. The batteries are great, I use them in many devices ranging from keyboards, scales to mice. I have not had any problems with them so far and I've owned them for almost a year now. From what I've gathered online, these batteries are the same exact batteries that Apple sells as their rechargeable batteries. So basically Apple takes the Eneloops and rebrands them with the Apple sticker and logo and marks them up. You are paying a lot less for the same batteries that Apple is selling out there right now, that made me very interested in purchasin these batteries. Again, so far so good, it's been almost a year and they've held up to my use.I have been using these for a year now and they are still as good as new. I use them in my Canon 580 EXII flash at weddings and they will usually last an entire day, depending on how often I use the flash. I can usually get about 300 to 400 flashes at 1/4 power out of these batteries, which is incredible. I ordered the big pack because I now use these batteries in everything from Xbox controllers to remote controls to my beard trimmer. They last forever and recharge quicklyJust got my batteries April 17, 2012 and all 4 packages have expiration date Feb 2011. Only 1 cheesy 4-pk battery case although I really don't care about that I figured I'd mention it for those that do care. I'm very upset about having expired batteries though. At nearly $2.50 per battery, I feel this is inexcusable.be happier.
I learned the hard way about rechargeable batteries discharging when I got to an event and found my batteries were near dead. (I had back-up non-rechargeables in my bag).
Either way, I ordered this set of 16 yesterday morning and got back from lunch to find them sitting on my desk at the office!
Packaging appears to be retail.

Minggu, 22 Juli 2012

should i buy Energizer CHP4WB4 Recharge Smart reviews

Energizer Recharge Smart Charger charges 2 or 4 AA or AAA NiMH rechargeable batteries. Countdown timer shows how long until batteries are charged along with battery fuel guage that shows charge status. Bad battery alert detects and shuts off charging when a non-NiMH or old NiMN battery is inserted. The large display can be viewed from across the room. Energy Star certified This package contains a very impressive-looking charger. The charger (CHP41US) features a countdown timer, a battery 'Fuel Gauge', and four bad-battery indicators. It looks like a very smart charger - until I examined closer.

The first warning sign is that: Would You Believe this charger can only charge in pairs? That is, it cannot handle 1 or 3 cells. A real smart charger has to monitor and charge cells individually, because this is the only way to ensure that each cell is not over-charged or under-charged.

The next thing I found out is that: the so-called 'countdown timer' is mostly for show. It's The Old "2-bit counter in a 7-segment display" Trick. The display always start from '8' (eight hours) when a pair of depleted cells is inserted, regardless of the actual remaining charge time. As the batteries are being charged up, the counter simply decrements through '6', '4', '2' and finally '0', even though the actual charge time may turn out to be just five hours.

The 'Fuel Gauge' on this charger is marginally useful. It shows 1-4 bars, based on the combined voltage of one battery pair. If two pairs of batteries were inserted, the fuel gauge is for the pair with the lower voltage. It soon dawned upon me that both 'countdown timer' and 'fuel gauge' are based on the same information. For examples:
2.2V = 1 bar = 8 hours,
2.4V = 2 bars = 6 hours, and so on.
By the time the combined voltage of two cells reaches 3.0V approximately, the charging is terminated. If the two cells have different capacities, then the lesser one is inevitably over-charged.

One problem with this single 'fuel gauge' is that: it does not tell you which cell is at what status. In comparison, other chargers in this price range may contain four individual status indicators. For examples:

The same problem applies to the four bad-battery indicators. If you insert one good cell with a bad one to the left two slots, for example, both indicators light up in red. But you still can't tell which cell is bad.

The four rechargeable AA cells included in this package are the . Note that their capacity is lower than that of previous generation (2500mAh), but they are not advertised as 'Pre Charged' or 'Low Self Discharge'. My own testing, using the charger/analyzer, indicated that those are indeed traditional NiMH cells. That makes me suspect that Energizer simply rolled back its rechargeable battery technology to circa 2004, instead of moving forward like other battery companies.

To be positive, I should thank Energizer for NOT making yet another timer-based dumb charger, or another '15-minute' battery roaster. But in calling the CHP41US a 'Smart' charger, Mr. Energizer Bunny just Missed It By THAT Much! I had the same problem as a previous reviewer. This charger indicates all batteries are bad, including the batteries that came with it. I bought it new and locally for $9.99, which is what the batteries alone would have cost me, so it wasn't worth returing. Hopefully it actually charges the batteries and it's just a screwed up indicator. Still, it should do what it's ADVERTISED to do. I was skeptical of buying rechargeable batteries because some are duds. However, I bought my oldest boy an Xbox 360 and I did not want to continuously pay money for batteries. Therefore, I decided to buy this charger. It works great. The game is played a ton. Still, the batteries last about three weeks, prior to needing re-charging. Initially, you will have to charge the batteries for eight hours for a full charge. The countdown timer indicates how much time is left for a full charge. Once the counter reaches 0, the batteries are fully charged. Since the charging duration is long, I would suggest keeping two batteries charged, at all times. Therefore, when the other two batteries run out, they can be switched with two charged batteries. I don't know what the issue is with other reviewers of this product. All I can say is I got my money's worth. Not to mention, I am saving money by not continuously paying money for batteries. That can be very expensive. Pretty good charger. Was impressed with how well you can see the display. Batteries took about 4 hours to charge. Another thing I really liked about this charger is that the electrical plug on the back folds in to make it even that much smaller. Fits in my camera case without any problems. Great to take along on a trip and save money not buying expensive batteries. Thanks Dom for buying this for me. Would recommend. Well i needed a new way to find out how to keep my Xbox 360 controller alive,without having to go to Gamestop,or Wal-mart.Well i saw most of the review's on this item,and i didn't know if i should buy it or not,but i had no time to look for another one,so i said what the heck.Well i am happy i took that chance,i was a little bit worry,because of all the bad review's.But when i got it,it worked perfectly fine for me.Never been more happy,and the charge time goes super quick,it state's 8 hour's for full charge,but mine only take's about 4 to 5 hour's top's.I do recommend this product.Hope this help's anyone that's looking for a good charger,for a good priceThis is really good, because now I don't have to constantly buy batteries now. It's very easy to use too, because all I got to so is plug in the charger in an outlet with the dead batteries. We are a large family with enough battery operated stuff to singly support Energizer for the next decade. Digital cameras, toys, radios, games, office equipment, flashlights....the list is almost endless. With the ability to recharge and reuse I am already seeing savings. No more bulk packs of AA batteries for us.

The charger is simple and easy to use. It has a very nice easy-to-read display that can be seen from halfway across the room so you know when the batteries are charged.

My Jr. High daughter thinks we are the coolest because we are going green and I think we are the smartest because we are saving greenIt's true that it can recharge both AA and AAA.If you want to charge AAA push it all the way back, it will stay in place. Nice display. Purchased from my local Wal-mart two months ago. Over half the batteries have failed since and will not charge; the charger indicates they are bad. The ones that still work don't hold a charge for long. A wireless keyboard that will last half of year on a single pair of normal AA's lasts about a week on these. I've used rechargeable batteries for many many years, never had such a poor experience. .

Sabtu, 21 Juli 2012

should i buy Rechargeable Battery For Uniden BT-905 reviews

While I was reluctant to buy this online because of the shipping, it was priced so reasonable that I could not resist. It was shipped quickly and performed as expected. I felt that I received two batteries for the price of one, had I bought it in the store.The batteries came quickly and they fit the phone with no problems. There was no problem charging. What more could you ask for?These are not the greatest quality, but are to be considered a good replacement I would say. So far they are holding a charge and functioning normally. I will update later if I have any trouble with them. Remember to charge for first 16 hours before using and then DO NOT leave constantly on charger as this causes discharging and pre mature death of cells. Thanks.These are not the greatest quality, but are to be considered a good replacement I would say. So far they are holding a charge and functioning normally. I will update later if I have any trouble with them. Remember to charge for first 16 hours before using and then DO NOT leave constantly on charger as this causes discharging and pre mature death of cells. Thanks. I like the multi-handset cordless phones I have used for years, but one of the original batteries finally died and wouldn't charge. Hated to buy new phones because these worked so well. So for 5 bucks I got 2 new batteries and they are great! They must have tested them, too, because both of them arrived fully charged. I think I reviewed this product already. As I've found with Amazon to date, this product meets my needs. I will order again in the future.I put the battery in the phone. Charged it for about eight hours, then took it off the charger for about a minute. And placed it back on the charger for another eight houts, took off the charger for about a minute. Finnally anouther eight hours on the charge so, in total the phone was on the charge for a little over twenty four hours befor I used. I have found that I can leave the phone off the charger for over a week (almost two weeks) with use befor the phone states low battery. This cordless phone batteries worked well for first 15 days I have used. I assume it will last as it has promised. It was a decent price. Such product requires a long time to fully review but Amazon does not have time. battery pack for extra capacity for mobile wireless universal use in commercial models giving very good results in the daily use of computers Great deal. Two batteries for the price of one.
Exact replacement for my old phone/battery.
I'm pleased with both the product and the supplierI wasn't sure if this would work for my phone or not, but the picture looked pretty close to my original battery. The batteries came, looking just as in the picture. The only difference between this battery and my old one was that the cords came out to the side instead of the top of the battery. This caused a problem because the battery compartment didn't have room to fit that arrangement. However, it was an easy fix. I just stretched/partially tore the shrink wrap a little so everything was in the proper place. These batteries have worked great so far. Who can argue with getting two of them for such a great price. It was prefect for me because I had two phones that needed new batteries. While I was reluctant to buy this online because of the shipping, it was priced so reasonable that I could not resist. It was shipped quickly and performed as expected. I felt that I received two batteries for the price of one, had I bought it in the store. I thought there was something wrong with my satellite phone but as it turns out it was the new battery that wIt was great to find the right battery and not have to pay! None of my local stored carried the right battery. Ordered for my mom's uniden phones. Seem great so far. They are much more expensive in the stores. Shipped quick. I ordered these, as my cordless phone decided that the old batteries had been around long enough. I didn't want to spend an arm and a leg to replace the cordless, without trying to replace the batteries. Sadly, it appears my phone is truly dead. I will be keeping the batteries, and getting a phone they can work in. Good price. Good product. The batteries were as described and worked fine in my Uniden portable telephone. Getting two battery packs for this price was a bonus. I am very satisfied with this product. It is a great value and has performed as expected. I would recommend it to anyone. great shipping, fast and very reasonable.
item price outstanding.
products are of higher quality than original.
original batteries were cadmium, these are nickel hydride, a much better battery. The batteries came quickly and they fit the phone with no problems. There was no problem charging. What more could you ask for?

Jumat, 20 Juli 2012

should i buy Panasonic NiMH AAA Rechargeable Battery reviews

As many other reviewers have found out: depending on from which vendor you order those you may receive either the genuine Panasonic brand, or some off-brand substitutes. Neither outcome is a good deal in my opinion. Allow me to explain...

Check the battery compartment of your Panasonic cordless phone (for example, the . If you see just two loose AAA cells instead of a battery pack, you're in luck! You can put any AAA rechargeable NiMH cells in there, and the phone won't know the difference. When the handset is placed into the charging cradle, the charger won't know the difference either. So it will just continue to charge the batteries at a low current (around 50mA). As long as your replacement batteries have capacity equal or higher than the original batteries, you are good to go.

That said, I highly recommend getting some good-quality LSD (Low-Self-Discharge, also known as 'Pre-Charged') rechargeable batteries, instead of either genuine Panasonic brand or off-brand rechargeable batteries. This is because:

1. Genuine Panasonic batteries have capacities of 550-630mAh, which is very low by today's standard for AAA rechargeable NiMH cells.

2. Off-brand batteries advertise higher capacities such as '1000mAh', but they usually suffer from rapid self-discharge problem. That means if you leave the handset outside the cradle for just a few days, the batteries will be dead due to self-discharge.

3. LSD batteries are pre-charged from the factory, and they are ready to use right out of the package. That means you can start using your phone with those batteries right away, instead of having to charge the handset for several hours before testing.

As of this writing, you can set a set of 4 good-quality LSD cells for about the same price as just two of those 'Panasonic' batteries. Consider, for examples:

All those batteries above offer higher capacity than the original Panasonic batteries. Furthermore, you get batteries with known quality, instead of trying your luck. That may be more important than cost-saving aloneI ordered the batteries for my phone because I thought that I was getting the Panasonic Brand at a great price. What I got was a "generic" which I had to pay to return.
I find it difficult to find this specific battery - Panasonic Brand - at any stores. For the cost that you would pay for 8 of these real Panasonic batteries - you could buy a new 4 phone system. well, As what I received were not panasonic batteries (though were advertised as panasonic) ,I cannot review themThese did the trick. For several months I was only getting about 30 minutes talk time on my panasonic telephone using the rechargeable batteries that came with the phone (purchased in November 2008). I guess although rechargeable the batteries have a shelf life. So I got these and now I can talk without getting cut off or having to switch phones. Need new recharge batteries these worked great and the price was the best part. Brand new in the packageing and now my phone works better than ever. I have used these rechargeable batteries to replace the original batteries in my Panasonic KX-TGA431CB Cordless Phone. I have used them for 2 months now and they are working very well.Had trouble with other brand batteries for my Panasonic phone. Off brand batteries were actually rejected by my phone. So I went with Panasonic, and that did the trick. A good price, fast delivery; and now my phone is working just finethey worked about one yr, then I had to dump my phone due to batteries had leak and do not want to deal with those chemical all 4 metal conuections These batteries are working wonderfully and they came in a timely fashion. I have no complaints about the product or about the shipper of the product. Very shot lifetime, this is not a Panasonic product. Could not be charged just several weeks application. Had a leakage also. I was not pleased finding ordinary AA batteries would not work with my phone. I think batteries for all makes of cordless phones should be universal. Each company should not have its own monopoly on batteries. Panasonic phones use renewable batteries that are not as expensive as other phone types so these batteries are a super buy, I have had
the phones for 2 years and this is the first time one of them needed new batteries. I ordered these batteries to replace the ones in my cordless phones. They were delivered fast and as described, and work greatmy advice to anyone who wants to buy replacement battery is NO. it is nobody's fault, but is the reality. everybody wants to lower the cost or price, so goes the qualityI order these batteries directly from Amazon, since it seems that other sellers kinda give you non-original panasonic batteries. It's been 3 days and my phone it's working like a charm. I'm so glad with these purchase I'm ordering a new pair for my other phone. Thanks Amazon!!!!When all three of my cordless panasonic phones needed batteries, I figured it may be cheaper to buy new phones. I decided to try purchasing replacement batteries from Amazon and ran across Good as New Electronics. Their add assured that the items marked "New" were new and not used. My phones last hours once again!!!! and at a very reasonable price!After a google search I found these batteries to replace the ones that would not charge anymore for my Panasonic portable home phone and they work fine, it beats buying new phone set from CostCo or BJ's warehouse. After opening the package, I noticed the old rusty non-shining ends on the batteries. They definitely are not genuine just by their look. I was skeptical and put them in use. After just a few weeks, they started to fail - my phone was dead again. I had to take the batteries out and put them back in and noticed some build up on the flat end of the batteries. For a while, nothing happened. I kept trying and tightening the batteries in place. They worked again. The same problem happened on two packages I bought to use on two hand sets. Will see how long they will last. I read reviews about not getting Panasonic batteries. I made sure I purchased from Amazon and not the million partners that have begun to appear on Amazon listings.

Batteries were exactly as advertised. Fixed my 5 year old battery problem in phone. They now last for hours and phone will be good for another 5 years..