It sounds as if you just want the battery for jacks, slides and lights while not plugged in. Assuming you have a standard RV fridge in a 2011, you can get by with two Interstate deep cycle batteries (one is pushing it). I doubt you would benefit from AGM or lithium. A lot of Walmarts handle Interstate I believe. Welcome to the forum. Also the first I’ve seen this post.
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Ron and Terrie Ames - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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