Until recently my bmv 702 seemed to be reading the battery voltages correctly.
The setup is a starter battery (74 ah) and a house battery (105 ah). Both are 12V. The house battery is set to be the aux and it is showing a reading on the BMV display of 5.08. When I measure the house battery directly I am getting over 12VDC.
So I performed a factory reset and checked the connections. Still voltages on bmv 702 are reading low (5.08). This also happens to be the lowest voltage recorded in the nvram.
How to start troubleshooting?