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Some of the batteries I bought a decade ago are still working. I haven't really tried any other brands, as I am very happy with these, so I can't make a comparison. I have been using Energizer rechargeable batteries for many years(over a decade). They work great and can be recharged "many" times.
I got less than 2000 mAH out of them in a controlled test. The description and image are for the 2450 mAh batteries. What arrived are the vastly inferior 2300s.Rather than get stuck with these crummy Energizers (since you can't get the good ones any longer), look for Sanyos. I took those back to the store as defective and tracked down the 2450s here on Amazon. I've had a few sets of these and they truly seem to deliver the rated capacity. I ended up buying a set of the "new and improved" 2300 mAh batteries in the store and they sucked.
I almost never use them anymore.I'm replacing these with Duracell ones that are advertised to hold their charge for a year, so hopefully those will work as promised. While these batteries have a higher mAh rating than other brands, I've seen much better performance from my Duracell and even some generic rechargeable batteries. Try another brand. I just cannot advise going with Energizer after using these. I cannot say for certain you'll have the same bad experience, as it depends what you use them for, but for me they barely seem to make it 2-3 months and sometimes only weeks before they lose too much charge to be of use. They're nearly worthless to me.
They hold a charge for a much longer time than I expected. I was hesitant about getting a camera with AA batteries versus the lithium ion battery. but I will only use Energizer rechargeables. I have been pleasantly surprised and would not be afraid to get another camera with AA batteries. I received Panasonic batteries with my camera and have already had to get rid of them because they don't hold a charge. I have been VERY PLEASED with the Energizer batteries.
Even if one saves money in the long run (which I doubt), they really aren't worth the bother. When I'm lucky, I get about two days between charges of the Energizer batteries. These are junk. I bought the Energizer rechargeable batteries for my little Sony transistor radio, which uses four AA batteries. Walgreen's alkaline batteries give me several weeks of excellent performance.
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