There was the one e-bike rider, home from riding it, who was taking the battery outside his apt. building. In the elevator on the way down, the battery exploded causing a contained fireball in the elevator car. I believe the unfortunate owner was burned to death.
Oh, I ommitted he was taking the battery outside —to cool off—
I fret about my battery powered yard & carpentry tools....but they don’t get banged around like an e-bike battery might.