Woodstock
Senior Member
I changed out our 24V thruster charger this week and when I was hooking everything up I noticed that there's a constant 20ma power drain on the batteries. The battery bank hooked solely to the Volvo QL Thruster Control Module so is isolated from all of the other battery and charging systems on the boat. Both helm controls were in the off position and the charger was not connected (fuse disconnected). It's a small drain and there is a separate thruster battery disconnect switch in the ER if I want to stop it but is this constant power drain normal?