Charge Controller is an interface part between the solar panel, the battery and the load (equipment). It provides protection of the battery and shows information on the system. It protects the battery from over charging and discharging to prolong the battery life and alarm for reverse connnection of battary. It provides information on the charging of solar panel and power stored in the battery.

MPPT charge controller has function of Maximum Power Point Tracking system. Always maintain the solar panel voltage at the optimum voltage to charge the battery, even when the sun ligth is low. Thus stored more power to the battery compared to normal charge controller.