However, practicality sometimes wins. For us to wire our starting batteries on the load side of the shunt, we would have to increase our starting battery cable lengths from the current 3' to around 30'. For both starting batteries. That would entail a massive upsize in cable.

I find that while the charging of both starting batteries does effect the accuracy of the monitor, the rate of inaccuracy is low and I can pretty much account for it in the monitor settings. I still need to rezero it every month or two, however.

Mark