Features: 1.DURABLE MATERIAL: : The solar panel frame has a low iron toughened glass surface and aluminum frame, which can prevent weathering and wear and has a long service life. The panels are made of highly efficient monocrystalline silicon, which generates more electricity in full sunlight. 2.BATTERY PROTECTION: The charge controller can prevent battery overcharge, overdischarge, overvoltage, short circuit and reverse current, extend battery life. 3.INTELLIGENT CONTROL: Automatic charging during the day, shutdown at night, reduce nighttime consumption, improve daytime efficiency, and do not consume battery power. 4.HIGH EFFICIENCY: The monocrystalline silicon panel, which can generate more power under full sunlight and achieve the most ideal charging effect in a limited space. 5.WIDE APPLICATION: It can be widely used in batteries for motorcycles, boat, tractor, trailer, truck, lawn mower, RV etc. Also be used for gate openers, electric fences, chicken coops, sheds, and lights. Specification: Item Type: Solar Panel_x005F_x000D_ Material: Monocrystalline silicon_x005F_x000D_ Protection Level: IP65_x005F_x000D_ Solar Panel Power: 20W_x005F_x000D_ Solar Panel Operating Voltage: 18V_x005F_x000D_ Solar Panel Open Circuit Voltage: 21.6V_x005F_x000D_ Solar Panel Short Circuit Current: 1.11A (maximum)_x005F_x000D_ Controller System Voltage: 12V/24V adaptive_x005F_x000D_ Output Port: Dual USB, DC5521 female_x005F_x000D_ Solar Panel Size: Approx. 330 x 360 x 3mm / 13.0 x 14.2 x 0.1in_x005F_x000D_ Product Characteristics: Integrated voltage regulator module, 5V dual USB voltage regulator output_x005F_x000D_ Application: It can be widely used in batteries for motorcycles, boat, tractor, trailer, truck, lawn mower, RV etc. Also be used for gate openers, electric fences, chicken coops, sheds, and lights.