Mike,

I'm guessing you might have either a leak when your systems are off, or you didn't get things all the way off. On my CC, I have two sets of disconnects. Back in the engine compartment are two disconnects, which I believe both have to do with the 24 volt system. However, there is a 12v disconnect system as well. ON my CC, there is a switch on the main panel, above the passenger seat, which is a electronic switch. And there is a mechnical switch down in my electrical bay, which is labled 12v disconnect. I aways turn off the 12v system from the inside, and I have stored my unit for pretty close to 30 days without the issue you're describing.

You've indicated there is no electricity at your warehouse. Is there light? If so, you can connect to an external solar panel to try to keep the charge up on the batteries. But, if there actually is a real drain going on, you'll want to make sure that you clear that up first.

An external battery charger, when you have access to electricty might be a valuable accessory.

I'm always worried about this, so I try to make the 45 mile trip to my coach at least once every couple of weeks, and start the coach and run it for 30 minutes or more.

Ray