Hi dhole, I live in Chicagoland and I do winterise my water lines and leave the batteries in the MH. However I do plug in the power cord once a week for 24 hours.When charging,I switch to "IN USE".Before starting in this cold weather I would use the engine block heather for 4-6 hours or overnight at 0 degrees.This way I never had any problems starting.
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Siggy & Ursula.
2011 Newmar DSDP 4020 , (No DEF, 07 emission),
FTL XCR Chassis , Cummins ISL 400 HP
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