I am trying to individually monitor both batteries in a 2 battery bank. I have 2 AGM dual purpose batteries in parallel. They are connected via a 1,2 or both switch and either or both can be used for house or starting. I was hoping to connect a separate BMV700 to each battery to monitor individual history and SOC. So the question is, can this be done and how do I connect the battery negatives in parallel ? Do I leave the battery negatives connected in parallel and connect the BMV as if the other battery wasn't there or do I connect the 'battery only' terminals on each shunt to each other in parallel ?
Additional question is, big current draw like the windlass (100A) and starter motor are connected directly to battery negative (on one battery but this is in parallel to the other battery) Should these also be connected to the shunt load side ?
