Prior to solar and building an RV pad with shore power I would top off the battery fluid, charge and disconnect. It's not going to hurt to put them in a warm environment with a trickle charge but I've never had to.
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Tony & Donna
2022 Montana HC, 295RL, Solar Flex 400, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide
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