During the day my PV is charging the batteries but in the evening we want to run the generator (for AC and cooking) As soon we start the generator I see the battery voltage going up, which is normal But see the the current going negative first to -80A then to it lower over time to -19A (in about 45 minutes.) My Magnum Rc controller gives me a absorb charge of +50A and the same voltage as the BMV and VRM. I have a BMV 712 with shunt and a Cerbo GX with MPPT 150/100. Also I see that the charge (SOC) is going down from 100% to 94% over a 45 minutes of charging via the generator.
Have the feeling something is wrong or not understanding completely how things should work. The Magnum charger/inverter is connected via the shunt (as all negative wires from the RV) I simply do not understand why during the charging via the generator and magnum I am seeing negative AMPs.
Maybe someone could give me a clue on what might be wrong.
