Customer Review

57 of 60 people found the following review helpful
5.0 out of 5 stars These are the best I've tried, June 13, 2009
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These Powerex AA rechargeables are the best I've tried.

I've tried several different brands of NiMH AA batteries (Delkin @ 2900 mAH, Power2000 @ 2500 mAH, La Crosse @ 2600 mAH, Duracell @ 2650 mAH, and DigiCam @ 1800 mAH). I use the La Crosse BC-900U charger on all of them so that I can see to what capacity they can be charged to, and even the La Crosse batteries that came with it can't be charged up to their own stated capacity. Duracell and Delkin both had a dud in each 4-pack of AA batteries. For all five manufacturers, the fully charged capacities of their AA batteries never exceeded about 80% of their stated capacities. None ever came close to a "full charge'. There was always at least one in each pack (excluding the dud in each pack) that would only charge up to about 50-60% of capacity, which would lead to a premature "Low Battery' shutdown of my camera.

The Powerex on the other hand, all charged to 95%+ of their rated 2700 mAH capacities and really last!.
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Tracked by 3 customers

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Showing 1-3 of 3 posts in this discussion
Initial post: Jul 21, 2011 2:20:50 PM PDT
Gl0w says:
Try Eneloop by Sanyo (made in Japan not China), I have 16-AAA and 14-AA, all came in Over the stated mAh rating. The La Crosse BC9009 charger came with La Cross NiMh batteries, 4-AA and 4-AAA. The best I could get out of the La Cross batteries, in "Refresh" mode was; 1976mAh from the AA rated at 2600 mAh, and 620 mAh from the AAA rated at 800 mAh AAA.
Charger seems okay, but I'm sticking with the Sanyo Eneloop batteries.
Cheers,
Chris

In reply to an earlier post on Aug 24, 2011 5:09:19 PM PDT
Last edited by the author on Aug 24, 2011 5:13:42 PM PDT
Disgruntled says:
The Eneloops are low self discharge (LSD) and shouldn't be directly compared to the "regular" Powerexes. Note that the highest capacity LSD AA batteries from any manufacturer currently are the Eneloop XX 2500mAh model...at $23 for a 4-pack at the moment. The Maha Imedion 2400s (the LSD version of this product, essentially) are priced similarly to the Maha Powerex 2700s, but again, lower capacity.

The tradeoff, of course, is that LSD batteries self-drain significantly slower, making them much more useful for low-drain applications.

The Powerexes are about the best batteries I've used for high-drain applications; e.g., when you don't need to keep a charge for months. Both types of batteries have their uses, but Eneloops are not a replacement for these if you're specifically looking for higher capacity batteries. (The Eneloops are still decent batteries, although I prefer the Maha Imedions as far as LSD batteries go.)

Posted on Jun 19, 2014 9:03:41 AM PDT
W. Gayther says:
How did you test whether the batteries were good or not?

I have a La Cross charger who's default charge is 200mah. Put it on the refresh cycle for the Eneloop XX's - 2 of them appeared crappy. Was going to return them, but ran across sites saying sometimes if the charge rate is to low it misses the delta-v it uses to sense when the battery is charged. So I charged it at 500mah - and found that suddenly all the batteries in the pack were fine.
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Location: Redmond, WA

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