Originally Posted by Pete'sMH
You can easily add a disconnect device but it won’t be entirely effective. The batteries will still self discharge over a period of 3 or 4 weeks. I got tired of it too and installed an 80W solar panel with a Trik L Start on the chassis battery. So far, even with the gray Indiana winter it’s keeping all 3 of my batteries topped up. One of the best mods I’ve done .
Not sure if one of these devices would help prevent drain on the House batteries.