• 🇰 🌀 🇱 🇦 🇳 🇦 🇰 ℹ️@yiffit.net
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    3 months ago

    I used to take those 9-volt battery connectors, wire them up together and then recharge a dead 9-volt with a brand new one until the tester strip thing showed they were both even. Surprised they never popped because they would get really hot lol

    • pewpew@feddit.it
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      3 months ago

      My dad used to recharge alkaline batteries with a special charger, but that was quite useless

      • Todd Bonzalez@lemm.ee
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        3 months ago

        Those chargers are really dangerous. It is technically possible to recharge a disposable alkaline battery a few times, but you’re never going to get more than a half charge, and it will fuck up the internal chemistry turning each battery into a tiny potential pipe bomb.

        • Psythik@lemmy.world
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          3 months ago

          I had a babysitter that used to do that. Even 7-year-old me thought that was a bad idea but she insisted that it was fine.

          I wonder what happened to her. I hope she didn’t accidentally harm a kid in an unintentional D-cell-powered terrorist attack.

        • pewpew@feddit.it
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          3 months ago

          At least that charger had a safety feature that would not charge a battery if it was too worn