Powered the camper nicely. Ran radio all afternoon, the lights, water pump, heater (low's hit 35 and camper stayed 60), CPAP - all night, and the inverter for a movie (which ran the 22" TV). The batteries needed "topping off" with the generator in the morning, but that was a lot of usage for one charge! (I'm no electrician so can't get technical).
I'm very impressed with the 6 volt set-up!