I have 3 12V 200ah batteries in parallel. I also have victron MPPT charge controller. The charge controller shows roughy the right voltage 13,5-14V, but the battery monitor show .04V. I have tried so many things to fix. I even upgraded to the temp sensor cord, but that didn't help and the temp shows -1C even when the settings say to do F and the temp is way off. I had the cord on the same positive that the shunt was getting negative from, so I moved to the furthest battery thinking that maybe had something to do with it but no. All connections are tight, checked multiple times now. The voltage did show up correctly at one point, I don't know what's changed to make it wrong. I also have tried to reset the device multiple times. Please help!