You'll soon discover with lead-acid batteries if you (or an uncaring RV dealer) abuse them they will have a VERY short life. I strongly urge you to stick a minimum of solar panels on the roof to keep your batteries topped off. Do this BEFORE you get new batteries. Once you run them below 12 volts a few times, sulfation starts killing them.
Lithium is a game changer... if you can afford it. Most of the lead-acid woes disappear when you go there.
P.S. It REALLY pi#$&@ me off when dealers TRASH RV batteries! Of all people, they SHOULD know better... but I think it's just that they really don't care... it's a low priority.
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