My battery charges when driving, with generator running and plugged into shore power. If I leave my coach unattended, not plugged in, for a couple days to a week, nothing works...Once I start back up, I can get it to charge...Once it sits for a few days, nothing? The internal battery is still good. For the life of me, I cannot figure it out. I live in the mid atlantic region and need to find someone who understands electric or would know how to fix the problem. Any help would be very appreciated! Thanks much.