Had my TH in the garage for three days while fixing a mark on my lift gate. I ran the stereo for likely 4-5 hours at volumes over 20, so the amp was working it. Yesterday while finishing up, I noticed the head unit cutting in and out. Windows would not go up, and the power lift gate was inoperable. My test meter showed voltage at 11.8V. Still had lights, etc, but not a sound when I pushed the start button. Boosted her with my wife's car, and started right up. Went for a fifteen minute run, dash showed 13.7V, and all seems good again. Is this to be expected? Thanks!