Description This Solar Battery Charge Controller automatically manages and regulates the voltage and current going into the battery from the solar panel. It features short-circuit protection, open-circuit protection, reverse polarity protection, and over-load protection to help prevent battery overcharging. Features - Solar Charge Controller regulates the voltage from solar panels going to the battery - Built-in industrial control chip for managing charging and discharging processes; parameters are adjustable to help prolong battery life and maintain load performance - Professional PWM charge management with comprehensive protection functions including short-circuit, open-circuit, and reverse polarity protection - LCD screen with backlight clearly displays system status and data - Easy to install and operate, suitable for home, industrial, and commercial solar energy systems Specifications - Color: Black - Material: Plastic - Size: Approx. 18.8 x 5.2 x 9.2 cm - Battery Voltage: 12V/24V - Charge Current: 20A/30A - DC Output: 12V - Floating Impulse Voltage: 13.7V / 27.4V - Undervoltage Protection: 10.5V / 21V - Undervoltage Recovery: 12.2V / 24.4V - Loop Pressure Drop: 170mV - Temperature Compensation: -4 mV/Cell/°C - Working Temperature: -20°C to 60°C - Storage Temperature: -30°C to 70°C - Humidity: Up to 90% non-condensing Packing List 1 x Solar Charge Controller