Hi,
I have been running a bmv702 with bluetooth dongle for a while successfully. It has always shown accurate SOC readings. Since I have installed an MPPT controller the SOC is alway 95% - 100% even when the batteries are low. Current and voltage all seem correct except for SOC. I am wondering if I have wired incorrectly - should the MPPT negative battery connection be on the battery side of the shunt ? If anyone has a diagram I would be grateful - thanks