About 4 years ago I added a shunt to monitor current flow in my 2x parallel 12v 100Ah LiFePO4 setup in my camper. I had bolted one side of it straight to the negative battery terminal and the other end to the negative cable that went to chassis ground. I recently revamped the wiring by redoing the terminal ends with better crimp connections and replacing some wires with thicker wires. While doing this I noticed that the negative cable coming off of the shunt to the chassis was corroded. I had to cut off maybe 3-5" to get to clean wire. The little sense wires on the shunt are also rusting. I added a small length of wire from the battery to the shunt now. See attached pic.
I just replaced the batteries with 2x 140Ah TimeUSB units today and I don't want this to continue to be a problem. I'm worried about the cables rusting again or worse, causing damage to the battery.
Did this happen because I had bolted the shunt straight to the battery? Or a cheap shunt? Can someone explain what happened electrically?
I just replaced the batteries with 2x 140Ah TimeUSB units today and I don't want this to continue to be a problem. I'm worried about the cables rusting again or worse, causing damage to the battery.
Did this happen because I had bolted the shunt straight to the battery? Or a cheap shunt? Can someone explain what happened electrically?