Feature:1. Carefully select materials, produce products, and restart without waiting, dual-output voltage regulator protection, and dedicated controllers to protect battery usage.2. With light, it can free up fixed charging and start charging autonomously. It can supply power to 5V products through USB output, and 18V output can provide emergency recharge for car batteries.3. Dual USB interface, this high‑quality solar charging board has USB and DC output, which can charge two devices at the same time.4. With 4 suction cups, installation is more convenient. Suitable for security cameras, laptops, car batteries, automobiles, airplanes.5. It is made of monocrystalline silicon solar cells with an efficiency of up to 21%. And please note that this solar panel has no power storage functionHow to Use:Just assemble the accessories, the operation requires the customer to bring the controllerSpecification:Item Type: Solar PanelWeight: Approx. 483g / 17.0ozMaterial:Monocrystalline SiliconProduct Size: about 43.5x20cm /17.1x7.9in(without power storage function)Maximum Power (PMAX): 20wOpen Circuit Voltage (VOC): 20VShort Circuit Current (ISC): 1.5AOutput: Dual USB plus DC5521Working Current: 2 (A)Working Voltage: 5-18 (V)System Voltage: 18 (V)Suitable for security cameras, laptops, car batteries, automobiles, tourist vehicles, ships, airplanes, satellites, space stations, outdoor farming, planting, tourism, solar street lights, etc. Package List:1 x Solar Panel1 x Cable with Clip4 x Suction Cup1 x Car Charger