Here is my setup:
Cerbo GX
Smartshunt (main battery monitor)
DIY Lithium battery with JK BMS with CAN for external control.
Multiplus II 3k 120v
MPPT 100/30 (roof mount)
MPPT 150/45 (ground mount)
2x Orion XS1400
With DVCC the chargers work as they should under external control. However in the app and on the cerbo, they are showing the incorrect voltage. With DVCC they should be taking the voltage from the smartshunt, correct? Not sure where this lower voltage is coming from as I checked all connection points along the path from the battery to the charger and they all show the same voltage as the battery. The two MPPTs show the correct voltage from the shunt and they are about 8 feet away (the XS1400 are within a foot or two of the battery). The only thing I have noticed is I have an on/off switch and I rarely need to charge from the alternator as my solar normally keeps up. When the switch is off it has the lower voltage reading. When it’s on, the voltage rises even before the charger starts (I tried to catch this in a screenshot) Is this a bug? All devices are up to date on firmware This doesn’t really impact anything in use, i just dislike seeing the incorrect voltage as I’m concerned something may be wrong.
State on (external control from DVCC) and all voltages match:
Off (voltages start to drift):
