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HomePower, Light & SolarBatteries & PowerPacksPremium AccuEvolution 9v NiMH Precharged Low Self Discharge Rechargeable Batteries - camera, wireless, all other use |
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|  | | | Customer Reviews: | | | Average Customer Review: ( 4 customer reviews )
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Most Helpful Customer Reviews
5 of 5 found the following review helpful:
 AccuEvolution 9v Battery Aug 17, 2009
By Dr. Goode
There are only a couple of companies that make 9v Low Self Discharge batteries. I now use AccuEvolutions 9v rechargeables in all of the smoke alarms and precision devices at home and in my profession.
Unlike conventional NiMH rechargeables, the AccuEvolution has an extremely low self discharge rate (less than 2% per month at room temp), so it stays charged for quite a while -- which is absolutely essential for smoke alarms and such. Unlike the lithium and alkaline batteries I was using, the AccuEvolution 9v maintains constant voltage during use and throughout its entire discharge cycle - which solves a lot of problems with sensitive equipment.
I have no idea where Amazon got this old picture of these batteries. The ones I get from Bearwobble have the familiar AccuEvolution logo.
3 of 3 found the following review helpful:
 Description isn't detailed enough. Dec 31, 2010
By Milk
I was not able to use this battery and had to return it. The specifications do not indicate the max charging current, or quickest charge time. When I received the battery, on the side it said 4hour quick charge max at no more than 60mA. This will not work safely in the Maha PowerEx MH-C490F-DCW Worldwide 9-Volt Battery Charger w/ Car Adapter I have (2 hour, 90mA charger). These specifications are pretty important if you don't want to have batteries explode and possibly burn your house down.
2 of 2 found the following review helpful:
good power retention Dec 03, 2010
By T. Goodman
You are not supposed to use a rechargeable battery in a smoke detector because they lose 12% of their power each month and so would be unreliable. But this battery loses just 12% in a year! Now I can just change all four in the house at one time about twice per year. No more "which one is beeping?".
High initial cost but zero cost for the life of this battery. Nice job!
Update 12/20/2011: One of the 4 batteries I bought just went bad. Dropped to 2.45 volts and will not charge. The others are still going strong though.
Rechargable battery that works Nov 28, 2011
By Marek
As of now, after three cycles of charging, I did not observe any problems with the battery itself. I hope it stays that way. The capacity as measured seems to be in line with what is advertised (+/-5% which is normal)
In general, very happy with the purchase, considering that the price is much more attractive than in retail shops.
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