https://en.m.wikipedia.org/wiki/Backdraft
You just need a fire in an enclosed space running for a bit of time.
> can't you tell the difference between a phone battery and a car battery ? really ?
I have seen the result of a house fire due to bad laptop battery.
Once a fire starts it's typically bad.
If you are worried about EVs catching fire, then any battery has the same risk percentage to start a fire. (defective samsung mobile phones is a good example of an issue and it being resolved)
Sure, it's much worse and much faster for an EV to catch fire. Still, a regular battery can kill you just as well.
I just leave my EV outside, I don't think it will catch fire, but if it does it won't kill me.
I also used to leave my gas car outside, I dont think that would catch fire either.
I havent seen too many regular consumer devices starting fires so that risk might be low.