Welcome to the group and maybe a word of warning if you are new to the RV world?
One of the most frequent problems we hear from newer folks is the batteries and how confusing such a simple thing can be! In RV use, it is often very difficult to get the difference it makes when we don't drive and use the RV like we do a car.
Watch carefully to make sure ALL batteries are getting charged and watered as a way to avoid ruining the first set!
Just a headsup from reading way too many posts about bad batteries!
Best of luck and enjoy the trek!