1、Stable Charging: Lithium battery specific activation function and voltage stabilizing charging function to avoid solar charge controller crash and protect battery cells. 2、Applicable Battery: When the battery does not power to the controller, it will take power from PV, suitable for acid gel battery, ternary lithium battery, lithium iron phosphate battery, etc. 3、Circuit Protection: With solar anti reverse charging, battery reverse connection, battery open circuit, overvoltage and load overload, power failure and thunder protection. 4、High Efficiency: The MPPT controller can quickly track the maximum power point of the PV array, improve the solar utilization, and provide greater charging current. 5、Working Modes: Support pure light control mode, normally open mode, light control and time control mode, a variety of load modes are optional to meet different needs. 1 x Controller1 x User Manual Item Type: Solar Charge ControllerModel: LSECM20A 12/24VPV Maximum Connection Voltage: 80VRated Current: 20APV Maximum Connection Power: 12V: 20A-260W24V: 20A-520WController Power Taking Method: Battery or photovoltaic panelCharging Method: MPPT Charging FunctionLoad: Multiple Working Modes are Available: Pure light control mode, normally open mode, light control and time control mode (4 periods and morning light)Protection Type: Solar battery anti reverse charging protection, battery open circuit protection, battery reverse connection protection, overload protection, etc.Size: Approx. 145.5 x 131.9 x 61.8mm / 5.7 x 5.2 x 2.4in