modern RV's can drain a single battery in just a few days, if not plugged into shore power.
lots of parasitic power drains that you don't see, plus the fridge needing power.
if you plan on dry camping a lot, you need to have a two battery setup.
it's only a lot of hassle if you don't know how your RV works.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC