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Do batteries ever go bad?

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There's a lot to know about Energizer batteries, so naturally there are a lot of questions people ask us. Here are the most common questions. read more

Batteries go bad all the time depending on the chemistry and the structure of the cell used however you may be able to get more life out of them. But eventually they will go bad. A drill battery for instance many times a bad cell or all the cells may be good and you will have a bad battery charging circuit. read more

Yes, I had one go bad. I own (owned) two of them. One (which had previously worked) would no longer keep my battery charged. I switched to the other one and the battery charged (and stayed charged) without issue. I tried the other (bad) one again and the battery would not stay charged. I concluded the tender was bad and tossed it. read more

A: Yes, all good things must come to an end. To find the Best If Used By (BIUB) date of the batteries in question, please look on the uppermost section of the cells, near the battery type (AA, 9V, etc.). read more

And like every battery ever made, it’s going to lose the ability to hold a charge over time. While the stories about the iPhone’s battery evaporating in two years are simply wrong, the fact is that sooner or later the iPhone’s battery will die. read more

No, but common dry cells are typically labeled with a "Best If Used By" or "Sell By" date. All batteries degrade in storage. As long as batteries are kept dry, storing them under cooler conditions will extend their storage life. read more

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