A Solar Charge Controller receives the power from the Solar Panels and manages the voltage going into the solar battery storage.
Its primary function ensures that the deep cycle batteries don’t overcharge during the day and at night it blocks the reverse current going back into the Solar Panels.
It also protects the batteries from any electrical overload, this is particularly important for panels that produce more voltage than what the battery can handle.
This component comes in two technologies, PWM charge controller(Pulse Width Modulation) and MPPT charge controller(Maximum Power Point Tracking), although they function the same they perform quite differently from each other. More about this below.
They can also come integrated into inverters, making it easier to install and run more efficiently because of this.