I was waiting for a meeting to start yesterday and used the time to jot down some calculations of electrical loads and battery life for my teardrop. I was gung-ho on adding a solar power to my tear and now I'm not so sure I want one. All my calculations are based on two 6v golf cart batteries and an 80 watt solar panel. I tried to make the loads worst case but I think I'm probablly being a bit optimistic on the PV array output. I'm thinking the money spent on the solar array would be better spent on a super quiet honda generator. For me, the bottom line is that the entire roof would need to be covered with solar array in order to be self sufficient for an indefinate amount of time. I also don't typically stay in one spot longer than a couple of days, which means I can recharge the batteries from the truck.
http://home.comcast.net/~bdosborn/tear/ ... _Calcs.pdf
Bruce