Powerex AA 2700mAh NiMH Rechargeable Batteries w/holder- 4 Batteries Per Pack by Maha Energy Corporation
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Digital camera reviews of Powerex AA 2700mAh NiMH Rechargeable Batteries w/holder- 4 Batteries Per Pack
Digital camera Review: Powerex purchase from accessory genie
Summary: 4 Stars
I've been a Powerex user for some time. One pair of batteries finally wore out. I expected this and still feel these are a good product. I purchased mine from accessory genie. I recommend them highly based upon this purchase.Digital camera Review: Powerful Battery
Summary: 5 Stars
I previously purchased Powerex AA batterieas, so I was familiar with their long and powerful charge. Needing more AA's, this was the obvious choice. Supplier was quick to ship, and they are in use.Digital camera Review: Rock solid battery's
Summary: 4 Stars
Wish I knew about these battery's sooner. I will never buy a regular alkaline battery again. The powerex are far better than the recharageable Energizer, or Duracell.Digital camera Review: Simply the Best.
Summary: 5 Stars
I've purchased sixteen of these cells. Some of the older ones are two years old now and still hold approximately 2600 mah. What's remarkable is the relatively uniform range of capacities: plus-or-minus 50 mah, which (to me) indicates very tight manufacturing specifications and quality control. The only cells that I've found more uniformly manufactured is the Sanyo Eneloop AA, albeit in the 2000 mah range. Note: Testing done on MAHA C-9000.
Equally impressive is the moderately low discharge rate. After 3 months, the cells retain approximately 85% of their original charge. Not as good as Eneloops, but you must remember that the Eneloops start at 2000+ mah, not 2600+ mah. Relatively speaking, the Powerex 2700's are by far the most powerful cells that I've tested after 3 months sitting on the shelf. Anecdotal reports elsewhere confirm my test results.
Bottom line: If you regularly recharge your cells, say at least quarterly, then the Maha Powerex 2700's are the best rechargeable value on the market for you. And if you plan on recharging your cells just once or twice a year, it's cheaper for you to use plain alkalines. (In the 3-6 month range, you may want to consider Eneloops.)
As to the failure rate reported elsewhere, I suspect that they may be the result of overcharging the cells. Even with my MAHA C-401fs, supposedly a smart charger, I've found will sometimes exceed 1.5v. The overcharging problem is even worse with various rapid chargers. I've subsequently switched to using the MAHA C9000 to recharge cells, which consistently cuts off at 1.4v.
Digital camera Review: Sour Lemons
Summary: 1 Stars
They are real lemons.
They take eons to charge up and then they lose their charge nearly at once. I've returned them to the place of purchase and the second batch reacted the same way. No good.
When used just after charge they STILL have a very short life. If you charge them and use them at once for 10 minutes and then leave them in your device for two days....they are as dead as door nails.
The technology is lacking.