We had the dealer do it as part of the purchase. There were 2 batteries originally and thery removed and replaced them and added two more in a row in the back. I will take a picture for you when we get back to the coach to show you.
Our runtimes are easily overnight, with full recharging on sunny days by noon, later for cloudy days. We still have to use the genset for AC and microwave. Pretty much everything else is covered.
2016 Thor Hurricane 35C with pups Piper and Annabelle
2013 Ford Fiesta toad
FMCA - F457085
Blog - https://traversity.us