For the first 20 or so years of RVing, we drove from campground to campground with full hookups, so solar would have been 100% useless. And since we didn’t rely on inverters, one battery was plenty to power the water pump and miscellaneous 12V electrical stuff during day while driving. For that type of travel, solar, lithium, etc. would have been pointless. Granted, we spent a lot on campgrounds.
Our generator didn’t get much use either because during the day we used it a few times to power microwave or leave dogs in motorhome with air conditioning.
Today, I would prefer trading generator for enough battery to run microwave or make coffee from an inverter, and also power A/C for a couple of hours. That’s as long as I would leave dogs unattended unless at a campground with shore power.
Needs are personal, plus they change over time. We boondock more now so our next camper needs to have different capabilities.
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