There is a common misconception among new RV owners that you should disconnect your house batteries when plugged into shore power (something about issues arising from multiple power sources).

If you have a modern multi-stage converter, don’t pay this misconception any mind. Outside of a few unique situations, there is no reason to disconnect your house batteries when connected to the grid. You’re just doing yourself a disservice. When plugged in, your converter actually charges your house batteries. If you disconnect, you’re just starving your batteries.

In fact, disconnecting your house batteries could actually cause problems, like dead batteries or a fried converter (more on this later). But there are some BIG exceptions to this rule, such as if you have a single-stage charger or you’re putting your RV into hibernation. Let run through these exceptions and see if they apply to you.