Solar charge controllers also help to maximize the amount of power that is generated by the solar panels. Linxon Provide wide variety of solar Products in Pretoria. Solar Charge controllers do this by tracking the maximum power point (MPP) of the solar panels. The MPP is the voltage and current at which the solar panels produce the most power. By tracking the MPP, the solar charge controller can ensure that the batteries are getting the most power possible from the solar panels.