Unfortunately we're we camp it is too shaded for effective solar charging Since I have to use my inverter generator which is quiet. I have a group 31 agm 105 ah battery on my TT and I carry two golf cart 6 volt batteries in my truck for back up. The golf cart batteries connected together gives me 232 ah use. I converted the 15 incandescent bulbs in my TT to led and use the heater sparingly...fridge is on propane and We cook outside. I do not use the heater at night, I can last about a week without charging.