my fiancee has an ipad air 2 and she says it has a strange smell of late. She said smelly like acid, like a leaking battery smell. She was using it with a 3rd party bluetooth keyboard so told her just use tablet incase was the keyboard. smell still there with tablet alone. It is not in a case just bare. She says the battery life not great either but that is due to having bluetooth on 24/7 if you ask me. Always using the keyboard and bluetooth can drain battery. any thoughts guys/gals?