Hi there,
I have a problem with my Orion TRSmart Non Isolated DCDC Charger. I also have a BMV-712 battery monitor.
Normally, when motoring, the charger should charge first my starter battery and then when this one is full, it should charge my consumer batteries.
When motoring for a long time, I experience that the BMV-712 is saying that the charge level of my consumer batteries stay same and is not charging. Also it shows a negative load, although motor is running and no big consumers are online. So the Ampere should be positive not negative, see picture.
my question: did I maybe do some wiring wrong so that my consumer batteries are being charged but my BMV-712 does not recognise it?
I have connected the DCDC charger as in my handwriting (GRD to ground bar, IN to alternator and starter battery, OUT to positive bar.
I have connected the grounds of all batteries to each other. Maybe I should better connect the starter battery ground to the ground bar, and not to the other batteries? So that it is connected to the ground bar behind the shunt.
I am lost. Maybe you have some hints? Thanks anyway!