I hunted for 5 days with mine using battery power, and I used LED lights and only used the main lights once and a while. I did fine but I have a buddy heater for heat and my refrigerator is three way and was running on gas. I always have my trailer for the ATV so I use a Honda 2000 generator inverter. I hunted 15 days with this set up and I took my computer to watch movies and had all the lights on and the refrigerator was on auto so it was running on the generator. The extra power is awesome to have and the honda was on idle the whole time. I wonder if I could power up my camper with a inverter plugged in to my ATV??? I am sure that my 400 watt inverter would be plenty for the camper but If it tried to charge the battery that might be a problem.