Features: 1. Durable Material: Made with monocrystalline silicon material, durable and able to withstand high temperatures and water exposure, suitable for use in harsh outdoor environments. 2. Power Supply: The solar panel converts sunlight into electricity with a dual output design, capable of providing power for mobile phones, power banks, car batteries, and other devices. 3. Long Lasting Durability: Resistant to high temperatures, water, and shocks, suitable for use on mobile vehicles and capable of operating in various weather conditions. 4. Easy Maintenance: Requires minimal maintenance. Regularly cleaning the panel surface is sufficient to maintain optimal power generation efficiency. 5. Secure Installation: Equipped with four suction cups to provide stability and help prevent loosening or falling during use. Specification: Item Type: RV Solar Panel Battery 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. Supports high current fast charging 2. Integrated intelligent charging chip 3. Connect DC5521 ports to multiple solar panels in parallel to increase output power Application: Charges mobile phones, power banks, car batteries, and other compatible devices