None of the models we considered were cheaper than $1 per battery, and most cost right around $2 per battery. No more than $3 per battery: Since rechargeable batteries aren’t something most people use every day, and you don’t get significant improvements by paying more, we set a hard price cap of $3 per battery.A higher battery capacity means more time channel-surfing with your TV remote, illuminating dark corners with your flashlight, and listening to groovy tunes on your Walkman. After considering the landscape of options, we gave preference to batteries with capacity ratings of at least 2,000 mAh for AA and 800 mAh for AAA. High battery-capacity rating: Keeping in mind that a battery’s true capacity is often lower than the rating on the box, we wanted to restrict our search to options with high battery-capacity ratings.This feature can cost a premium, but we require it for every model we test because we’ve found that some low self-discharge batteries are still usable after several years, as opposed to months, in storage. However, some batteries are designed to have a lower self-discharge rate than others, and they are marked as such. So just because you fully charged a battery yesterday doesn’t mean it will still be 100% charged today.
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