Description _x000D_ _x000D_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 short-circuit protection, open-circuit protection, reverse polarity protection and over-load protection in order to ensure that the batteries are not overcharged. _x000D_ _x000D_Features _x000D_ _x000D_- Solar Charge Controller regulates the voltage from solar panels going to battery. _x000D_- Build-in industrial master chip to control the charger and discharge process.Parameters are adjustable. Prolong the battery life cycle and keep the load work well. _x000D_- Professional PWM charge management, all necessary protections equipped. Short-circuit protection, open-circuit protection, reverse polarity protection _x000D_- LCD screen with backlight function clearly indicates status and data. _x000D_- Easy to install and operate, suitable for home, industrial and commercial solar energy system application. _x000D_ _x000D_Specifications _x000D_ _x000D_- Color: Color: Black. _x000D_- Material: Plastic. _x000D_- Size: Approx. 18.8 x 5.2 x 9.2 cm. _x000D_- Battery Voltage: 12V/ 24V. _x000D_- Charge Current: 20/30A _x000D_- DC: 12V _x000D_- Floating impulse voltage: 13.7v / 27.4v _x000D_- Undervoltage protection: 10.5v / 21v _x000D_- Under voltage recovery: 12.2v / 24.4v _x000D_- Loop pressure drop: 170mV _x000D_- Temperature compensation: - 4 mv/Cell / _x000D_- Working temperature: - 20 ~ 60 _x000D_- Storage temperature: - 30 ~ 70 _x000D_- Humidity: no more than 90%.Packing list1 x Solar Charge Controller