Features: Made for mobile camps and off-grids adventures, the 40W foldable solar panel is perfect for longer trips when you need more power without sacrificing portability. With a small size of 425x285mm/16.73x11.22inch (when folded) and a light weight design that can be easily squeezed into your backpack, offering portability and simple. Our solar panel make of the cells with monocrystalline can effectively convert solar energy into green electricity needed by human being and the conversion rate is up to 21%. It can charging directly cell phones,power banks, usb fans, flashlights, tablets, watches, headphones and other mediums small usb electronic devices in the sunlight. Easy to use: Just unfold, angles toward the sun, and connecting, it’s that simple to start powering your devices (Note: this folding solar panel can't store the electricity) Specifications: Component: Monocrystalline maximums power: 40W Open circuit voltages: 20V maximums power voltages: 18V Short circuit current: 2.2A maximums power current: 2A Expanded size: about 585x425mm/23.03x16.73inch Folding size: about 425x285mm/16.73x11.22inch Package Includes: 1set 40w Folding Solar Panel note: 1. Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 2. Ensuring that solar panel are installed in sunny areas to achieve optimal energy conversion efficiency. 3. Avoid obstructions such as trees, buildings, to ensuring direct sunlight.