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. Features - Color: As shown. - Size: 11 x 6 x 3.2 cm/4.3 x 2.4 x 1.26 inch. - Material: Aluminum. metal shell design, with super stability and . - IP65 waterproof class, waterproof more heat dissipation. - Improved charging ( +PWM), charging faster. - Easy installation and easy operation. - Comprehensive protection: Provides overcharge, overdischarge, overload protection, and short circuit and reverse connection protection. Specification - Battery voltage: Opening battery: 12V/24V; Lithium iron phosphate battery: 3.2V (4-6s); Lithium battery: 3.7V (3-6s). - Rated charging current: 5A/10A/15A/20A. - Solar open-circuit voltage: <55V. - Light control open voltage: 12V-5V/24V-10V. - Light voltage: 12V-7V/24V-14V. - Temperature compensation: 12V-13. / degree centigrade; 24V-26.4 MV/ degree centigrade. - Working temperature: -35 degree centigrade-65 degree centigrade. - Waterproof: IP65. Package list: 1 controller