Sprinter van chassis battery

[jcurtisis]

My Navion 24D chassis battery is supposed to be at 12.2 v or higher. When I have it parked with all systems turned off, there is still a drain on the battery based on the battery monitor in the coach. I have to run the engine every three days to keep the cahrge above 12.2 v. Is this normal / am I supposed to do something to prevent the voltage drop?

[Mike Owens]

I also asked the factory about this being a new owner of a 2017. They said to put the stereo switch to house. For me this did not answer my question. I had a dead chassis battery after purchase and replaced it the next day. I also ordered a Trik-L-Start Ultra TRIK-L-START Starting Battery Charger/Maintainer to cure that issue. It vampires power from the house batteries to maintain the chassis battery. While the seat is off I'm getting my solar setup for my future install of it as well. The onboard battery charger in the power center will not trickle down enough not to harm (cook) your house batteries. I recommend a off board battery maintainer for this.