Solar Panel Voltage Regulator 24v

Mohoo solar charge controller 30 amps solar charger controller 12v 24v solar panel intelligent regulator with dual usb port and pwm lcd display upgraded this product the mohoo solar charge controller is great for those looking to wanting a clear and easily programmable lcd display. My 315 watt 24vdc panels normally output 39vdc to the mppt charge controller this is the way that amperage is created in the panel through voltage amps convert to volts in dc without a load to consume them you need to use a charge controller between the panels and fans to limit the voltage into the fan pwm controller will work just fine as. 12v single battery 24v double battery to be given to two schools i want to charge the battery from both the source solar preferably during day time and mains supply during rainy.