It looks like a mess; just trying to get the connections right before I do the necessary wire management. I’ll try to explain it the best I can. I installed a Victron bmv 712 battery monitor
on my (2) West Marine
. Before installing the monitor
, the batteries
were (and still are) wired in parallel. Since I’ll mainly be using one battery
as the starter, and the other as the house battery, I installed the monitor on the chosen house battery. So, I have all negative connections (except parallel connection from neg house battery to pos starter battery) from the house battery on the battery monitor shunt (load side) and then a connection from the negative house battery to the battery side of the shunt. The shunt is powered to the positive terminal of the house battery. I’ve got a reading and it seems to be ok.
The thing I’m unsure of is since my batteries are wired in parallel, is it actually an isolated accurate read? Or am I getting cumulative readings from both batteries? I also need to program the Amp hours in the monitor; since each battery is 105Ah, is that the number I would use? Or would it be 210Ah because they’re wired in parallel— even though the starter battery has no direct connection with the battery monitor — besides the parallel connection?
Do I even have this wired correctly?