I installed a Balmar Smart Guage a couple of years ago and it worked fine until today. The primary battery still works fine and displays the voltage and SoC as expected. The problem is with the second battery which now displays “lo” all the time despite the voltage being 14.4v when measured across the terminals with a volt meter. The system is 12v flood and I have checked all the connections from the batteries to the guage. I would be grateful of suggestions as to what to try next.
Thanks
Tim
Thanks
Tim