• fox@lemm.ee
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    2 months ago

    This title is pretty bad, the paper focus is in designing new battery technologies not magically restoring capacity on the batteries we have today.

  • zr0@lemmy.dbzer0.com
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    2 months ago

    Warning: heating earbuds batteries to over 300F also causes fires

    Reading this tells me the author has absolutely 0 idea of how physics work and is nothing but a blogger of consumer grade equipment. People like that should refrain from trying to understand how science or scientists work.

  • x00z@lemmy.world
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    3 months ago

    In the good ol’ days when I ran out of battery and every charger had a different stupid little connector, I often put my phone on the window still or heater to get a little bit of juice to do what I needed to do.

    I guess I am a scientist.

    • rogermiraki@lemm.ee
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      3 months ago

      Wow, this brought back memories of me rubbing my hands against my old Nokia battery in middle school to heat it up and get a couple extra %.

  • Rolivers@discuss.tchncs.de
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    3 months ago

    Sounds like a horrible idea if not carefully controlled. Perhaps up to 80 degrees in an oil bath could redissolve some of the electrolytes. I guess it could work. Anything above 100 is asking for trouble.

  • RaoulDook@lemmy.world
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    2 months ago

    Important note near the end of the article - they aren’t saying we should cook batteries really -

    “The team’s hypothesis is that the structural disorder developing inside LIBs may become a “tunable parameter” that, if tweaked using chargers at precise voltages to alter said battery composition, could be used to rejuvenate the batteries in our tech without fires.”

    This is a good old idea that goes back to the days of desulfating lead batteries with powerful shocks of high-amperage current. Might just need a special Healing Charger that applies the right voltage/current to dissolve the bad crystals in lithium-ion systems

    • CucumberFetish@lemm.ee
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      2 months ago

      I remember recovering dead 18650 cells from laptop batteries and “restoring” them with a 12V modded PC PSU. Quite a few of them actually started working again and had some capacity for a few tens of additional cycles. Those cells were never left unattended in a charger and they were always only used in a device you could chuck in a moment’s notice.

      10/10 do not recommend.

      • RaoulDook@lemmy.world
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        2 months ago

        How did that process work? Did you just connect the +/- ends of the cell to the +/- 12v wires of the PSU and let it feed from the high-amp outputs? Imagine there’s plenty of amps on the GPU and CPU power wires

        • CucumberFetish@lemm.ee
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          2 months ago

          Yup, just plugged it in there. The internal resistance of these cells was high enough that it limited the current somewhere between 3-8A. And this was done only briefly as these cells got quite…warm.

    • Tobberone@lemm.ee
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      2 months ago

      Well, there is some data/rumours out there, stemming from a Dutch Tesla forum, that suggests that some fast charging might be beneficial for battery longevity. This seems to corroborate that. I can’t remember the case for always fast charging, though.

  • iAvicenna@lemmy.world
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    2 months ago

    so putting batteries in the fridge wasn’t useful after all, we should put them in the oven

    • Dasus@lemmy.world
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      2 months ago

      so I can now put my spicy pillows in the oven and tell the insurance men the internet told me to?

    • NotMyOldRedditName@lemmy.world
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      2 months ago

      Putting my LG G Flex which had a boot loop problem due to a soldering issue on the battery solved the problem temporarily!

      Edit: oh also that was the freezer

      • topherclay@lemmy.world
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        2 months ago

        I’ve known some old people to put their bootloops in the freezer because they think it won’t go stale as fast.