MPPT charge controller calculator: Find the right solar charge ...
2 solar panels in each string. The power rating of our solar panels is 100W. The open-circuit voltage of our solar panels is 22.3V. The voltage of our battery bank is 12V. The lowest temperature is -3°F. For this system, the MPPT calculator suggests a Victron 100V-50A charge controller and an EPEVER 50 amp charge controller.