These batteries were supposed to come charged. They didn't. No big deal. I charged them and put them in a portable radio. In addition to these, I also have the 2800mAh AA batteries from the same company. In principle the 2800 batteries should keep their charge longer, but and the others do show a slightly higher amperage when I test them, but I haven't really noticed much difference yet. We have a lot of devices that need batteries, and I much prefer to use rechargeable batteries because they end up being cheaper and because they are not as harmful to the environment. I had found that a typical rechargeable battery will last a couple of years. Then they start losing charge quickly. So, I'd quit using them. Now with the new Ni-MH rechargeables like these that's all different. These batteries can be recharged 1200 times! That's about 23 years if recharged once/week. That's also amazing. Ok. Say they don't live up to the hype and last only 10 years. Still, amazing. At 1.2 volts, they aren't a powerful as alkaline batteries, but I haven't noticed an application for which they don't work. They are supposed to keep their charge for a long time when not in use. That's a big plus for me because I have lots of battery powered things I don't use regularly.
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