I have a 712 BMV. I have it working in combination with a Genisys Dual Battery system for Jeeps. It works great and detects a charge if I charge my batteries using my solar (100/20 MPPT Victron charge controller ) which is connected to the ACC Power bus bars. When I drive the car however, the BMV never changes/detects the SOC regardless of battery voltage or Output (negative)... the SOC continues to drop...
The solenoid (in the picture) joins the 2 batteries when the starter battery ( the one on the left) is over 12.8 volts.
Attached is a diagram of the device and they way I have it hooked up.
Can any one explain why it will not detect the charge from the cars alternator and/or potential fixes?
thank you in advance.