I have a MakeSkyBlue 40amp MPPT charge controller and I have 5 100 watt solar panels. I would like to hook up 4 of them in series, however that seems to be borderline over the voltage specs for a 12 volt system because the max voltage for a 12 volt system is 80 volts, however my panels are 21-22 volts open circuit for a total of 84-88 volts. I know that you should never exceed the voltage specs, so I am not sure that this would be safe. I was thinking, if I hook 2 in series and then the other 2 in series then parallel them that should be 44 volts at 10 amps, correct? Would that be a safe way to connect 4 100 watt panels to this MPPT? I am open to any suggestions on other wiring methods. I dont like parallel so much because my power loss in the wire was pretty substantial. As of now I have 3 hooked in series to that MPPT and the other 2 are hooked to a PWM. I know I am losing alot with the PWM so just trying to optimize what I currently have. Thanks for reading!
Here is a link to the MPPT controller I have with the full specs on it.... https://www.amazon.com/MakeSkyBlue-Controller-Regulator-Display-Flooded/dp/B07HHNHWR6
Here is a link to the MPPT controller I have with the full specs on it.... https://www.amazon.com/MakeSkyBlue-Controller-Regulator-Display-Flooded/dp/B07HHNHWR6