Batteries

[Bob-Winnie]

I have a 99 Winnebago and I'm thinking of going to a music festival. I'll be dry camping and don't know how often I'll be able to run my generator. Anyone have an idea of how long the house batteries last while keeping the frig cold with the propane? Let's assume I'll be careful with the lights etc.

[ScoobyMike]

Fridge wont drawn much, water pump and heater will. 2 12 V, no furnace, no TV, reasonable light use 3-5 Days.

[tomwalt]

I get max of 3 days with 2 house batteries with frig on and lights at night. I use a laptop for 2 hours to show a movie. I still use water and shower (HW via gas).
If I turn the frig electric supply off, I can get 6 to 8 days.
My Dometic RM2852 model frig control boards draw a copule of amps. There is a power disconnect in the freezer door frame so I can easily shut it down and just don't use the frig.
P.S. 1/2 of my internal lights are LEDs and those I use when boondocking.