>>1956063You can think whatever you want.
Fact is that laptops, tool batteries, they all have proper BMSes that do turn off the battery pack when shit's fucked. And e-bike BMSes sometimes are so shitty you could have just used a battery pack without it.
Here is a photo of a shitty BMS. See something like this? Avoid it. It has 50% chance that it won't cut the battery in case of wire failure, which is dangerous.