If I understand correctly, microscopic dendrites tend to grow out of the lithium ion mass when charging, which can compromise the outer protective layer of the power cell, depending on how that's constructed.

That has the possibility to start dangerous fires. I just don't know how common such a thing is.

[–] RegularJoe@lemmy.world 1 points 2 days ago

While rare, these are lawyers specializing in lithium battery fires...

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https://www.levinsimes.com/blog/lithium-ion-battery-fire-statistics

Lithium-ion battery fire statistics from the Environmental Protection Agency (EPA) show 245 fires within 64 waste facilities alone over a seven-year span, which were determined to be caused or likely caused by lithium-ion batteries and lithium metal.

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And even if it's a low chance, it's a chance.