So I've been looking into why my house battery bank voltage drops after charging, even though I had the batt disconnect open or off . The only thing that bypasses the disconnect switch is the inverter. By using my mini DC clamp meter, I found that the inverter was drawing about 2-3A at idle, so I turned off the inverter switch. Current went down to 1.5A, so I start checking to see if the disconnect switch was really off. I found voltage on the house side (at the rear run bay) at 11.5v, so I replaced the disconnect switch with a new Blue Sea 300A switch. Now I have 0 volts on the house side with the disconnect open, but I'm still reading about 250mA of DC (1/4A). I thought the old Heliotrope solar controller might have some idle current, as the coach is stored under an awning so the panel sees no sun. I disconnected the wire from the controller to the battery buss and still read the same 250mA of current. If I had the coach up in the air, I could clean the grounds......