Batteries are difficult to check because in most cases they go unnoticed once you put them in all the dead batteries. These are good batteries for their performance in remotes, game controllers, and art supplies. I've never had anything fail due to lack of power, and they last about as long as other rechargeable batteries (which is less than standard batteries, but that's a trade-off). They charge in just a few hours, but your mileage may vary depending on the charger. The price is also pretty average for rechargeable batteries. This is a pretty good buy.
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