Lwiddis wrote:
mattyj, your question shows you know little about RV electrical. Get the basics by reading online. It will be time well spent. Not many seasoned RVers would even consider using single a group 27 battery.
I've been Rving for 50+ years, I currently have 1 grp27 battery and have for 20 years in my Lance truck camper and do just fine. I don't use a bunch of stuff but it powers my lights, pump, lap top and charges all my electronics. I stickily boondock and as long as my food holds out i'm good. I do have solar and a generator that I carry but never use as the solar takes care of everything.