Senin, 06 Agustus 2012

should i buy Zeikos ZE-4AA Rechargeable AA 2900mAh Batteries reviews

After four complete changes and discharges and a refresh cycle in my nice LaCrosse charger, these have reached just over 700mAh charge. The LaCrosse 2600 rated batteries that came with that charger have reached 2100mAh ... withour the refresh.I have a rayovak 1 hr. charger and a much slower overnight charger for nimh batteries.. When I placed these batteries into my chargers, only 2 would charge. I contacted the company and they immediately sent me 2 more batteries. These wouldn't charge either... at first. I finally figured out that if I completely ran them down, two more would charge. Don't know if I'll have to do this every time or not, but I have no problem with CVS, Duracell, or Rayovak batteries. Yes These Batteries Did come up short on the numbers with my LaCrosse smart charger. Yes they seem very light in comparison with Sanyo and Duracell. Looked like another lemon. So I thought why not try them in my Camera. A Canon S3IS. Over a two week period I took 768 pictures with a 1400 KB average size. 267 pictures used the flash. So I ordered two more sets for $9.50 including postage. That was more pictures than I got with my Sanyo 2750 mah batteries.
When you read bad reviews don't always believe them. Besides some reviewers liked them. USE a Grain of salt. From me they get 5 Stars. Will let you know if they blow up my camera. But Don't hold your Breath. Do NOT BUY THESE. I bought 3 pacakges for my sons and daughter for their leapsters the batteries didn't even have a charge when I put them in and after charging all of them they only kept the charge for about a 1/2 hour! Never again I'll stick with brands I am sure work. - Right out of the package, the average remaining charge is just 837mAh. This is to be expected from ordinary NiMH batteries, which may self-discharge completely within a few months in storage.

- After the first recharge/discharge cycle, the average capacity improved to 1924mAh

- After another FIVE more recharge/discharge cycles, the average capacity only improved marginally to 1944mAh. The spread in capacity is between 1857mAh and 2030mAh.

For reference, I have tested dozens of  and other Pre-Charged Rechargeable Batteries using the same procedure. The majority of them are measured between 2050-2150mAh, even though they are rated for 'only' 2000mAh. So the problem is not with my setup.

Conclusion:
Those Zerkos rechargeable batteries are marketed as 'High Capacity', yet their measured capacity is only around 1944mAh, or 67% of the rated capacity of 2900mAh. The manufacturer is using false advertisement to prey on the average consumer, because most people cannot tell the true capacity. Avoid this junk, and go with quality batteries such as Sanyo eneloop instead. Zeikos batteries weigh less than other AA name brand batteries, and over rated by 2/3rd of advertised capacity, only can make 700-810ma on a professional Maha Powerex One C9000 Charger, Analyser in the break in or charge analyser mode.

These 2900ma batteries are NOT Suitable for Digital Cameras.

I guess you get what you pay for. I'm going to replace these with Sanyo Eneloop XX AA batteries that are know for their accurate capacity, quality, weight, and longevity, and low discharge rate.First off these batteries can't even hit 700 mah no matter what charger I use including trickle charging them. They are hunks of junk. after a week one battery literally exploded and 3 more are buldging. If I ever put these in my 500 mah or 700 mah charger they'd explode like dynomite. Never Ever will I buy these again. PS - ordered mine from PlusDigUSA but they actually came from King Camera in Monsey, NY I've so far ordered a few packs of these batteries for my cameras. They are not the best, because do not keep charge for a long time. Also decharge rather quickly even without any usage. Nevertheless concerning their price, it's still a good choice and gives you a fair service unless you work with a charge-eater apparatus. Bought 8ea of these with a Fenix LED Flashlight. Now I know why they were so cheap. They would barely power my light at high for :15 minutes or so.
I used my La Crosse BC-700, to run Tests and Refresh Cycles on all 8 and never saw anything better than 611mAh. Most were in the 400 to 500mah range. They even weigh about half the weight of any other "Name Brand" NiMh's I have. Beware on these..... Your time and money will be better spent on some other batteries.....

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