Here is an article that I ran across regarding
setting up your own battery system in any RV (LQ horse trailers included).
A while back, a ride camper asked if anyone knew how to do this. Well, it
took awhile for me to find this article as my putor crashed right around the
time she asked. Anyway, this informative article came to me via an RVing
chat group. When one is new to the world of campers, etc, its good to get
ideas from where ever one can. BUT, I've lost track of that chat
group. Anyway, here is the article. Use your search engine
to find The 12 Volt Side of Life.