Last year we dry camped for 3 days/nights. We have a champion 2000W inverter generator, and a group 31 battery, and i assume a WFCO converter. We handled that ok. I did figure out that the charging...
Use less power at night if possible. We replaced the lights that we use most often with LEDs. Original 1156 type bulbs use 27 watts each , LED's like below uses about 2 watts each.