My iPad's currently in a metal tin in the garage (concrete floor, well away from anything flammable) after I bent it a few days ago[1] until I can get it repair

My iPad's currently in a metal tin in the garage (concrete floor, well away from anything flammable) after I bent it a few days ago[1] until I can get it repaired. I suspect I'd know by now if the battery was damaged, but I don't really want to leave it in the house overnight. [1] Forgot it was there and put some stuff down on it - there's now about a 20° degree bend in the middle of the long side that goes about half way across the back. Somehow, the screen didn't break.