I tow a 2004 Jeep Liberty. My Demco Stay-In-Play Duo braking system requires battery power to operate. It says nothing in the Jeep owners manual about disconnecting the battery.
I did install an RVI Towed Battery Charger so I’m keeping the battery charged from the motorhome while driving.
https://rvibrake.com/products/towed-...ant=8804388741