I have a 2012 Winnebago Itasca. I bought all new Interstate battery in February, took the coach to Florida for 7 weeks without battery issues. All seven weeks we were plugged into shore power with ...
Three weeks without charging and with parasitic loads while at the repair facility can drain and kill house batteries. Sometimes a dead battery can be recharged but it will still be damaged. One solution is solar charging which will maintain the battery during the repair and in storage. Yes, a kill switch to off is a good idea.