Furnace? Fridge on propane? How long do you plan to camp? How are you recharging your battery?
If all you are using are lights any battery should do if it's a weekend trip. For a week you would probably want at least 60AHr batteries. If you plan on using a furnace then you will need at least 2 high AHr batteries for the weekend. More if you are going for a week. All this is assuming you aren't charging your batteries. If you have a generator or solar setup you can get away with less batteries.
My pup could drain 2 x 125 AHr batteries to 40% using the furnace in one night. I installed a convection heater and took care of that problem. I also installed a solar setup. 200W can fully charge those batteries in about 4 hours from 40%. I also have an inverter generator as a backup but it only really gets used for the microwave or the A/C which we haven't used yet where we like to boondock.
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2009 Ford F150 FX4 5.4L, 3.73 Axles
2018 Prime Time Tracer 215Air
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