George, Dan gave you one solution if it is a single battery. If yours is a two or more battery system then simply disconnecting the ground from the battery is solution #2. The act of turning your red keyed battery switch to off will do nothing for you. Number three might be a solar charger mounted on the south side or roof of your RV for the winter will also work, but a little more expensive and convoluted.
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Jim in Memphis, Wife of 51 years is Brenda
2019 F450 6.7 Powerstroke
2018 Mobile Suites 40RSSA
2021 40' Jayco Eagle
2001 Road king w/matching Harley sidecar
2021 Yamaha X2 Wolverine 1000
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