When I first bought my RV I had the Dealer install a Cutoff Switch that I bought on my Chassis battery. I don't have extended storage concerns as you do, but if I did, I would simply turn that switch off, and call it a day. I have used the switch a few times, but mainly for security and or troubleshooting where I did not have to remove cables off my battery.
My Use/Store switch for House Batteries when in Store has ZERO draw, I have gone a month trying to get the batteries to drain but everything is OFF. I drive my RV somewhere at least once a month year around winterized or not.
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2019 Sunstar 29ve; Toad Lincoln Navigator; RVi Brake 3 & Command Center; Roadmaster Nighthawk Tow bar & Baseplate; Sumo Springs; Safe T Plus; Onan EC-30 AGS; Vmax 250ah AGM; T-Mobile Internet; H/W Heater / Chassis Disconnect Switches; Southwire Surge Guard 44270 & 34951 w/Monitor 40301; Jet Flo Macerator; Alpine SPE500 Speakers; Visio M21D-H8R
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