Old Magnum MS2812 and new Lithiums

[boondocker]

Hi. Sorry for the delay…

Here are pics of my Victron Smartshunt with the Magnum wires attached. I also attached a pic of the Magnum collection device which is in the adjacent compartment.

Hope this helps.
Rich

How did you wire your MPPT solar charge controller in? Do you have the negative from solar charge controller going straight to the load and charge side of the victron smart shunt or the magnum bmk? Where did you wire the positive side of the MPPT ?

 

[Richpatty]

It’s really simple actually….all positives go to a positive bus bar…and negatives go to a negative one, Except the negative coming off the batteries…that cable goes to the input of the victron shunt. The output of the shunt attaches to the negative busbar. I hope this makes sense.

 

[boondocker]

So you aren't using 2 shunts? One for the Magnum BMK and One for the Victron? I have two setup that I ran in series. I guess I could eliminate the one that came with Magnum and only use the victron.

My current issue is that everything is reading fine except when the solar is charging it is not updating my SOC on the Magnum or the Victron. I know its charging because I see the volts jump but the SOC is not updating and accounting for that positive current.

 

[Richpatty]

I am using just the one Victron smart shunt which reports data via Bluetooth. I ran the wires from the Magnum unit right to the Victon smart shunt, so it is doing double duty. You should be able to see this in my pics in post #79.

 

[Richpatty]

My current issue is that everything is reading fine except when the solar is charging it is not updating my SOC on the Magnum or the Victron. I know its charging because I see the volts jump but the SOC is not updating and accounting for that positive current.

I would be curious if it is the way you have the controller wired…it needs to connect back to where the positives and negative connections come together. That maybe at the battery posts, which is how Newmar has it from the factory. I added the bus bars to make it neater and easier to manage and visualize.