Hi there!!!
Recently installed a BMV-712 smart with CTEK 250SE and smartpass 120, two 100ah batteries, and 100w solar panel.
On testing initially everything was just fine but now when there is charge coming from vehicle alternator it is showing as a negative current -1.2 ish amps and therefore the BMV is seeing that as a load and depleting the soc % accordingly.
What have I done wrong?!?
Some info that might assist:
The only thing out of the shunt is the negative side of the battery bank, all loads on correct side of shunt.
The negative side of the battery bank is grounded to the vehicle.
When the vehicle is off and it’s just the solar, this is registering as a positive value input and therefore charging the battery bank through the dc/dc charger (ctek d250se)
Some pictures also attached of wiring and what is shown on app when vehicle is running.
Doing my head in trying to work it out! Thanks in advance for any responses!