How much battery bank you need is highly dependant on your trailers parasitic loads and your use of electrical power. Generally speaking though a twin six volt battery (about 220AH of storage) and a generator to recharge can boondock for as long as you want until you run out of fuel. To minimize generator run time make sure you a have good 3 stage converter or upgrade to one. With a good converter I would recommend the Honda 2k versus the 1k for the $200 difference in price as a good converter might overload a Honda 1k and the 2k would allow for microwave use if wanted
An example of trailer parasitic loads useing my current FW:
- With just the battery connected, no fridge or HW heater turn on it draws 0.5 amps contineously or about 12AH per day
- With the Fridge and HW heater on using propane that parasitic draw averages 1 amp or about 24AH per day. This is with no lights and each standard 12volt light bulb draws an additional 1 amp each.
My setup for Football weekend tailgating without electrically hookups is twin 6volt batteries, 265watt solar,all LED lighting, and a 300Watt PSW inverter for running the TV, Laptops, and phone chargers. If I don't need AirCond this setup will run long weekends using multiple TVs as much as I want and don't run out of power not using the Generator. I run out of water and gray tank capacity first on a 3 night weekend