This Solar Battery Charge Controller automatically manages and regulates the voltage and current going into the battery from the solar panel, and it’s designed with overvoltage protection, short circuit protection, overload protection, overcharge protection, over discharge protection and full reverse connection protection in order to ensure that the batteries are not overcharged. Features - Color: Orange - Size: 19.5x15.5x5.5cm - Material: Aluminum alloy+plastic - Automatic identifying system voltage, 12 / 24V automatic identification. - The load control mode can be selected, and the timer function of the street light can be reset at night. - With working storage function: record the total running time of the system, record the error timer during the running time, and record the time to fully charge the battery. - Reliable overvoltage protection, short circuit protection, overload protection, overcharge protection, over discharge protection and full reverse connection protection. - Accurate temperature compensation, automatic correction of charge and discharge voltage to improve battery life. - The solar panels, batteries, and solar charge controller positive are all connected together, and uses negative MOSFET series to control circuit. Specification Rated charging current: 30A. Rated voltage: 12 / 24V USB output: 2.4A * 2 Overcharge current (V): 13.7V / * 2 24V Over-discharge current (V): 10.5-11V / * 2 24V Temperature compensation: -3mv / degree centigrade / battery No-load loss: <45mA Loop voltage drop: <200mv Display: LCD display Waterproof rating: IP32 Package list: 2 controller