I use a panel set three 15 watt from HF just set them outside put controller inside they keep my two RV battrys up . on a limited use when dry camping i use for lights LED , 12 volt to run refer on propane. and water pump. the panels keep up .
I do a lot of dry camping Fill fresh water tank in camper and a 50 GAL tank in back of truck. That makes me good for about a week if we use sparingly. If I need more can refill tank in truck.
