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-circuit protection in order to ensure that the batteries are not overcharged. Features - Color: Black - Size: 13.35x7x3.5cm - Material: ABS. - Adopt industrial microcontroller for stable operation. - LCD display for easy controlling charge and discharge. - Full PWM charging management. - Dual anti-backflow circuit, low heat productivity. - Provides over-current, open circuit protection, and short circuit and reverse connection protection. Specification - Rated charging current: 30A. - Rated load current: 30A. - Working voltage: 12V/24V. - Floating charge voltage: 13.8V/27.6V (adjustable). - Undervoltage protection: 10.7V/21.4V (adjustable). - USB output: 5V 3A - Working temperature: -35 ~ 60°C. Package list: 1 controller