Editorial Product Review:Item Description:Energizer Rechargeable NiMH round cell batteries' leading-edge technology makes them ideal for the most advanced, high-drain devices--digital cameras, personal digital assistants (PDAs), hand-held games, portable CD players and palmtop computers. Our high-capacity cells provide exceptional power per charge and up to 1,000 recharges. And since they're renewable and reusable, Energizer Rechargeable batteries are a good economic and environmental choice.
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Buyer Reviews
Average Buyer Rating:

Customer Rating: 
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Good Rechargeable battery
Overall works very well. Holds charge well. Gets 20 or so full recharge/drain cycles before starting to taper off on holding a charge. 30 or so is the limit. However, that's not a bad return on investment.
Customer Rating: 
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Dead
I have a whole bunch of these along with a lot of other rechargeable batteries and these ones are the worst by far. They only work for about 15 minutes now and then die. It's takes probably a year to get to this point. I could have saved money by buying regular batteries for the amount of use I've gotten out of these.
Customer Rating: 
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Very short lifetime
The lifetime of those batteries are so short you would need dozens and overwhelming look after for continuous recharge. Not money worthy.
Customer Rating: 
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Don't waste your money
As others have said, these batteries do not hold a charge at all. I have 20~ of these that I mostly use in Wii and Xbox 360 controllers, with 6-8 to spare for when one set goes dead. They're always charged as soon as they're taken out and then put back in a case with the other reserves. Often times it might be 3-4 weeks before I have to change some out, and at least 1/2 of the time the replacements are already dead.
I have 4 Sony batteries in the mix, and as another poster has mentioned, I've also noticed that they seem to hold their charge much better.