20w 5v monocrystalline solar panel mono powered waterproof fast charging charger board with accessories

power: 50-100w output voltage: dc output: 18v & 9v usb output: 5v 2.8a (max) type-c output: 5v 2.8a material-panel: pet laminated sunpower mono-crystalline cells size:280*280*3.0mm produce continuous stable output even in cloudy day. this panel is capable of meeting a wide range of applications where standard panels can be inconvenient to mount, such as on the curved roof of an airstream