Yeah I have a Bosch ebike battery. Of course it's certified and such, it only gets charged when I'm awake, and it's on a 4-hour outlet shut-off timer.
I think everyone needs to understand and respect the power of these batteries.
There also needs to be a standardized system to easily and safely dispose of end-of-life ebike batteries. I think the bike shops should have deals in place with the manufacturers to send EoL batteries back to them.