Feature: 1. Durable Material: Adopts monocrystalline silicon material, durable and able to withstand high temperatures and waterproof, could be use in harsh outdoor environments. 2. Power Supply: The solar panel can convert sunlight into electricity, dual output design, enough to provide power supply for mobile phones, power banks, car batteries, and more. 3. Long Lasting Durability: Resistant to high temperatures, water, and shocks, suitable for use on mobile vehicles and capable of working in various weather conditions. 4. Easy Maintenance: Requires minimal maintenance and replacement. Regularly cleaning the panel surface is enough to maintain its optimal power generation efficiency. 5. Secure Installation: The panel comes with four suction cups, which can provide better stability and prevent it from loosening or falling off during use. Specification: Item Type: RV Solar PanelBattery Material: Monocrystalline silicon Power: 20W USB Output Port: 5V 2A Maximum DC Output Port: 18V 1.1A Maximum Working Voltage: 18V Open Circuit Voltage: 21.6V Package Material: PET + EVA + TPT Size: Approx. 415x340x3mm/16.34x13.39x0.12in Features: 1. Support high current fast charging 2. Integrated intelligent charging chip 3. Connect DC5521 ports to multiple solar panels in parallel to increase the output power Application: Charge mobile phones, power banks, car batteries, and more . Package List: 1 x RV Solar Panel1 x 1.5M DC5521 Cable1 x Car Charging Cable1 x Clip2 x Buckle4 x Suction Cup