OP here. Thanks so much for all the info and advice. Based on the comments I suspect the fridge will be used for storage for now unless he gets a bigger genny / solar / bigger inverter.
Solar and more / better batteries make sense but I don't think he wants to spend those $$ right now.
He only uses it for a place to hang out during the day. Maybe an overnight or two on occasion. He has a small gas heater mr buddy or something like that he uses but not while sleeping. I did advise him to get new co and smoke detectors no matter what he does.
The cook top works and apparently the furnace. Would this old stove top require 12v power or would it depend on the model? The current owners just recently put two new propane tanks on board and they are full.
I was thinking that for now he could just hook the battery up to the 12v fuse panel ( or whatever it is called ) and then he could have 12v lights and juice for the furnace / stove top if needed. Would that make sense? This would bypass the converter and eliminate all a/c power.
Of course he would have to keep the battery charged occasionally with his little genny or take it home and charge it on ac. unless he goes solar. He could use his little inverter to charge phones etc.
Thanks
