this post was submitted on 24 Apr 2025
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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.
How is the boiling point of water relevant to something that's made of plastic and metal?
Well the electrolyte solution is water based so exceeding the boiling point will cause pressure buildup inside.
Edit: hmm seems I might be generalizing too much. Not all batteries use water based solutions. My point is that you should avoid a pressure buildup inside the battery due to reaching the solvents' boiling point.
That still doesn't follow. For every mole of particles dissolved in a liter of water, the boiling point of water increases by about 0.5°C.
Good point. It's highly concentrated inside a battery if not saturated. Hmm. I still wouldn't expose them to such high temperatures.
Perhaps a longer duration at lower temperature is safer. I might try it some day with some waste batteries and a battery tester.