Shit like this is what makes me worry about all the internal batteries in products. I actually keep older things I'm not using in the oven, in case they ever catch fire spontaneously. Phone batteries, old phones with non-removable batteries, laptop batteries, etc.
Smart move. I remember that I buy new battery for my old Samsung phone, and notice that this battery are little inflated. I decide to keep it, just to show to my son when he visit me. After week or so when he visit me I show him battery which are inflated much, much more, like balloon. Funny things are that I keep this battery on table under papers. I did not expect that the battery was in such a bad condition and that it could catch fire at any moment. God know how many old battery people keep in his houses.
Fire proof safes work too
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