My battery was dead in my jeep and after being tested it was bad, so I put another battery in. The next morning, the new battery was drained, but when I had it checked it was good and my charging system checked good, so something is draining the battery. I'm thinking it is something it the panel where the temp controls and radio are because my air used to just come on and off on its own, and now is not; my radio settings will not stay now when I turn the vehicle off, when I start it again it is on am and I have to reset all the stations and even when the vehicle is running the radio turns off when the door opens; also, my cell phone charger gets really hot when plugged into the lighter, even for a short time. Where should I start when trying to figure out what is draining my battery?