•Product Function: It's an MPPT (Maximum Power Point Tracking) type of charger controller, solar working station, and voltage controller. The work time depends on sunlight radiance. It has a max PV power of 300W, max PV voltage of 50V, and a system voltage that can be self - configured to 24V/36V/48V/60V/72V. With a conversion efficiency of ≤97% and MPPT tracking efficiency of>99%, it optimizes power usage. The MPPT voltage range is 12V - 50V, and the maximum charging current is 16.7A. It has an insulation resistance of AC1KV, 5min test ≥ 20 megohm and a protection level of IP30. It can work with lithium - ion or lead - acid batteries, and supports various battery types with a manual setting button for battery voltage and charging parameters.