...I suddenly wonder how many miles the average RV is driven per day, when being moved.
I'm seeing people talking about limiting themselves to 6 hours or 300 miles per day, and advice to never do more than 500 miles per day.
Also, how much boondocking is done? (I don't actually care about water and sewer hookups for this, I just care about electricity.)
The reason I'm thinking about it is... how much battery does an electric RV really need?
If people are only doing 300 miles a day, and driving to a campsite with at least electric hookups... shit, 200 miles of EV range is enough!
Start out with a full battery in the morning (having charged at the campsite at 9.6 kW (minus any house power usage) off of a NEMA 14-50 hookup), drive 200 miles, charge to 60-80% at a DC fast charger, drive another 100 miles, done.
Of course, cost will be a huge issue here.
Camper vans are not known for amazing aerodynamics, so to get that 200 miles of range, you need a lot of battery. Looks like the Chanje V8100 is claiming 150 miles on the HD-UDDS with 100 kWh of battery (so, probably a lot less range in the real world on the highway).
So, I'm thinking about 200 kWh is about right - 1 kWh/mi. (For comparison, a Tesla Model X 100D is at 390 Wh/mi EPA, and Tesla claims the Semi can do under 2 kWh/mi fully loaded.)
Also optimizing aerodynamics would be critical.
Rooftop AC units are right out - ideal would be a basement heat pump setup. Any retractable awnings would need to be integrated into the body, rather than just hanging off the side. If the design is actually made as a camper rather than as a cargo van adapted to a camper, tapering the roofline above the bedroom will improve aerodynamics massively with little impact to livability.
There is also going to a pop-up roof to minimize frontal area...
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