I have 4 220ah batteries (6v in series and parallel =12v system) controlled with 2 mppt charge controller with 800 watts solar panels. My one CC mppt 40amp controller stop charging my batteries. I tried many different things, like a different solar panel, new battery cable... But nothing will work. The controller is doing everything except not turn on the solar charging light on the CC.
I think I figured out what is going on. When I connect just the solar panel to THE CC the voltage shows approximately 33 volts (my panels voltage) however when I connect the panel and battery to the CC it drops the panels voltage to 12.4 on the CC. So I think the CC thinks the battery's are not wanting a charge. I think is has something to do with the over discharge or over discharge return voltage. Does anyone have any suggestions
I think I figured out what is going on. When I connect just the solar panel to THE CC the voltage shows approximately 33 volts (my panels voltage) however when I connect the panel and battery to the CC it drops the panels voltage to 12.4 on the CC. So I think the CC thinks the battery's are not wanting a charge. I think is has something to do with the over discharge or over discharge return voltage. Does anyone have any suggestions
Comment