Testing out a new MPPT 75/10 along with a small solar panel (3 pcs 6V/3W panels in series) and an used 80Ah AGM battery.
I notice that even after several days og sunshine and with not consumption, the green LED flashed twice a second to indicate BatteryLife.
Battery voltage is 13.0V - 13.2V.
Does this indicate a dead battery?
Or should I just add a propper solar panel to get things going?
What are good threshold values for an AGM battery?