1、WIDELY COMPATIBLE, SELF ACTIVATION FUNCTION: Support 12V 24V battery, ternary li battery, Li FePO4 battery, customizable parameters. It has the function of self activation of li battery. The solar panel can directly start the controller, and it can also start with 0V voltage at the battery side. 2、ULTRA WIDE RANGE OF WORKING ENVIRONMENT TEMPERATURE: Continuous running without capacity reduction and full load in the working temperature zone. When the photovoltaic input exceeds the rated power or the temperature is high, the controller will charge and run within the rated current to ensure the safe and stable running. 3、CHARGING: AC to DC converter can be realized to charge the battery, maximum charging 5A, and 0 to 5A adjustable. When set to 0, no charging. AC to DC converter can be prioritized to supply power to the load, or the battery can be prioritized to supply power to the load. Utility and solar panel can charge the battery at the same time, or charge the battery separately, support utility power supply alone or solar power supply alone 4、HIGH SAFETY: It has battery overcharging and over discharging prevention, reverse connection prevention, short circuit prevention, anti reverse current prevention, TVS anti thunder prevention, etc., solar panel reverse prevention, short circuit prevention, current limiting prevention, etc., utility power anti reverse connection, current limiting prevention, etc., load short circuit, overload prevention, etc.. 5、ADJUSTABLE DISCHARGE MODE, GOOD HEAT DISSIPATION: Normally open output, light control function, light control and timing function. Adopting aluminum shell, with excellent heat dissipation characteristics. Thermally conductive silicone can be used in various harsh environments. Item Type: Solar Charge Controller Material: Integrated Aluminum Housing Weight: Approx. 713g / 25.2oz Battery Type: 12-24V Li Battery Universal Battery Voltage: 12-24V Maximum DC Output Current: 30A Output Mode: Normally Open (24 Hours Power Supply) Communicating Mode: Infrared, BT Product Size: Approx. 136x104x27mm / 5.4x4.1x1.1in 1 x Solar Charge Controller 1 x Instruction Manual