Hi, confused here. I just switched our RV from AGM to Lithium. Installed 2, 12 volt batteries in parallel and am adding the IP 65 Smart Shunt.
My confusion is the wiring. I want to monitor the 2 batteries as 1 single battery. My current install is a negative cable, 2 total from both batteries to the batt side of the shunt then the loads all on a bus bar with a single cable from load side of shunt to bus bar. Is this correct?
Or should I run a cable from one battery negative to the other battery negative, then a single cable to the batt side of the shunt?
Lets call one battery A and one B. You should parallel both batteries with 2 cables then connect the positive of battery A to the load busbar. Then connect the negative of B to the shunt and setup a negative busbar for all the ground connections.
Ok, I see. I need to hook negative of battery A to negative of battery B, then go to the shunt then negative bus bar.
Looks like I need to change the positive too. Currently I have both positives going to positive bus bar separately…
Thanks guys
As you are on an RV, if the lithium batteries have a chassis ground or common negative with the starter battery these should connect to the -ve busbar, not the battery itself. See picture.
