Do you use a generator?
For those that use a generator while camping I found this conversion to propane... and I believe one of them will work off the low pressure BBQ port on the side of many of our RV's
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
93 days boondocking in 2020,157/2019219/2018 206/2017,215/2016, 211/2015, 196/14, 247/13, 193/12