I just converted our new ride to all electric...took out stove top and replaced with an induction. We are on our maiden voyage with it and have stayed in a private CG 2 nights out of 30 and no solar yet. A energy star refer uses 100W when running less than half the time so 2 batteries will run it 30+ hours before needing to be recharged.
You are better off buying a rig that’s already total electric as it should have the PSW inverter you need (except for Samsung’s) and more AHs of batteries. I made the mistake of putting way too much money in a NoCold 1200 because of the BS about boondocking with a residential. Going total electric (not really as you heat with a AquaHot) is the best mod ever and I’ve done quite a few mods.