We have a 2010 Mirada. I get it out the first of April and put it in storage the first of December. When I get it out in the spring, I turn the battery disconnect on and it stays on all season. When we are not traveling, it is parked at home and plugged in to shore power. It rarely sits more than 3 or 4 weeks between trips. I do check the battery water level every few weeks. Before it goes into storage in Dec., I make sure the water is topped off, the batteries are fully charged, then turn the battery disconnect off after I park it inside. The batteries are a pair of 6V GC batteries from Sam's. They are 4 years old and are still working fine. My storage is not heated and has no electric available. This winter we had exceptionally cold weather and the chassis battery died. The house batteries started me up just fine when I went to get it out in April.