Most panels in the markets are normally 17%. Standard USB output fit for 5V device; Port B. 18V DC&5521 output for 9 to18V(about 2A) laptop and 12V car battery. Compact Design: Convenient eyeholes enable easy attachment to backpacks while hiking; Portable and frame design fit for outdoor and indoor use. Package contents: ALLPOWERS 18V 40W Foldable Solar Charger, DC cable, 10 laptop connectors, MICRO USB cable, hooks, instruction manual.The item "Solar Charger Foldable Panel Portable Usb Power Battery Pack Dual 5v Bank Port" is in sale since Saturday, March 04, 2017. This item is in the category "Cell Phones & Accessories\Cell Phone Accessories\Chargers & Cradles". The seller is "wowdealzno1" and is located in china. This item can be shipped worldwide.