Feature 1、【High Efficiency】 The 20W polycrystalline solar panel kit is designed to provide high efficiency power generation. With its advanced technology, it can convert sunlight into electricity with maximum efficiency, ensuring optimal performance and energy output. 2、【Versatile Charging Options】 Equipped with a 12V dual USB output battery panel controller, this solar kit offers versatile charging options. It can be used to charge various devices such as mobile phones, car batteries, and RV batteries, making it ideal for automotive, boating, and camping applications. 3、【Reliable and Durable】 Built to withstand harsh weather conditions, this RV solar panel kit is made from high-quality polycrystalline silicon materials that are resistant to corrosion. It is designed to be durable and long-lasting, providing reliable power generation even in challenging environments. Features: 【High Efficiency】 The 20W polycrystalline solar panel kit is designed to provide high efficiency power generation. With its advanced technology, it can convert sunlight into electricity with maximum efficiency, ensuring optimal performance and energy output. 【Versatile Charging Options】 Equipped with a 12V dual USB output battery panel controller, this solar kit offers versatile charging options. It can be used to charge various devices such as mobile phones, car batteries, and RV batteries, making it ideal for automotive, boating, and camping applications. 【Reliable and Durable】 Built to withstand harsh weather conditions, this RV solar panel kit is made from high-quality polycrystalline silicon materials that are resistant to corrosion. It is designed to be durable and long-lasting, providing reliable power generation even in challenging environments. 【Easy Installation】 The solar panel kit for home includes all the necessary accessories for easy installation. It comes with 300W 30/40/50/60A(for optional) PWM controllers, 2 alligator clips, 4 suction cups, and a car charger, making it convenient to set up and use. The user-friendly design ensures hassle-free installation and operation. 【Portable and Convenient】 With its compact and lightweight design, this solar panel system is highly portable and easy to carry. It can be easily transported and used in various settings, including cars, yachts, RVs, and boats. The included car charger allows for on-the-go charging, providing convenience and flexibility. Specification: Product material: Polycrystalline silicon Panel size: 435 x 200 x 2.5mm / 17.13 x 7.87 x 0.09in Controller size: 13 x 6.5 x 3cm / 5.12 x 2.56 x 1.18in Product color: White Black Solar panel voltage: DC12-18V Max. power: 300W - controller, 20W - solar panel USB output: 5V Number of USB ports: 2 Open circuit voltage (VOC): 5V Short circuit current (Isc): 3A Output interface: USB Waterproof grade: IP6 Controller: Controller current: 30A, 40A, 50A, 60A (Optional) Float charge: 14.4V (default, adjustable) Discharge stop: 10.7V (default, adjustable) Discharge reconnect: 12.6V (default, adjustable) Charge reconnect: 13.2V Self-consume: ＜10mA Operating temperature: -35°C - 60°C / -95°F - 140°F Packing List: 1 x Solar Panel 1 x Controller 2 x Alligator Clips 1 x Car Charger 4 x Suction Cups 2 x Manual Package List 1 x Solar Panel 1 x Controller 2 x Alligator Clips 1 x Car Charger 4 x Suction Cups 2 x Manual