Working as a maintenance engineer in a steel mill, I can tell that I get exposed to situations on a daily basis where things don't work the way there were "designed" to work.

That's probably why I am paranoid. My entire job is planning for the unexpected. Guess I'm trained to think that way, lol.

But for real, you could have a bad cell in the battery, or anything crazy like that. I just like to cover my bases.