1、Volt Stabilized Charging: To avoid controller crash and protecting battery cells, special activation function and voltage stabilization charging function for lithium battery. 2、High Efficiency Charging: Obtain the maximum energy of the solar panel in realtime, rapidly obtain the maximum power point of the PV array in any environment and significantly improve the energy utilization of the solar system. 3、7 Protection Functions: Solar power anti reverse charging, battery reverse connection protection, battery open circuit protection, over voltage and load overload protection, power down protection, thunder protection. 4、PV Power Extraction: When the battery does not supply power to the controller, turn to take power from photovoltaic adapt to a variety of batteries, colloidal batteries, ternary lithium batteries, lithium iron phosphate and other types of batteries. 5、Applicable Scenarios: Our controller is suitable for desert power supply, water power supply, forest power supply, breeding power supply, wild camping, RV, etc. 1 x MPPT Solar Charge Controller1 x Instruction Manual Item Type: MPPT Charge ControllerModel: LSECM20A 24V 48VMaximum PV Access Voltage: 130VRated Current: 20AMaximum PV Access Power24V: 20A-520W48V: 20A-1040WController Power Taking Mode: Battery or PV panel power takingCharging Mode: MPPT charging functionLoad: Various working modes, pure light control mode, normally open mode, light control plus time control mode (four periods and morning light)Protection Type: Solar battery anti reverse charge protection, battery open circuit protection, battery reverse protection, overload protection, etc.