Package included: 1x Solar Charge Controller1X User Manual. Moreover, the system has excellent battery management, including MPPT charging, constant voltage average charging and constant voltage float charging. The tracking efficiency of MPPT is 99%, and the power efficiency of the whole system is up to 97%. MPPT solar controller can detect the voltage and current of the solar panel in real time, and constantly track the maximum power, so that the system can always charge the battery with the maximum power. Automatic focusing MPPT tracking charging, high charging efficiency, non-stop detection during charging, bidirectional focusing tracking. 30A MPPT Solar Charger Controller, Solar Panel Regulator Charge Controller, High Charging Efficiency, Dual USB, MCU Control, Build-in Timer(Blue) This product provides short-circuit protection,open-circuit protection, reverse protection, overload protection
