Based on what measuring method? Victron app? Was the battery "rested" or was it running the trailer when you noted the "42%". What size and type of battery? What year trailer? (View Post)
"Local Dealer" may mean "Electrical Amateur" just like some of us. I would go over your settings for you battery step by step, page by page, section by section. For both the Shunt… (View Post)
The other thing that can draw power like this are the "battery heaters" for the Battleborns. An amp each per hour. There is apparently a switch somewhere that turns them on and off. Find th… (View Post)