Our solar panel make of the cells with monocrystalline can effectively convert solar energy into green electricity need by human beings and the conversion rate is up to 24% Make for mobile camps, the 40W foldable solar panel is perfect for long trip when you need more power without sacrificing portability With a small size and a light weight design that can be easily squeezed into your backpacks, offering portability and simple Easy to use: Just unfold, angles toward sun, and connecting, it’s that simple to start powering your devices (Note: this folding solar panel can't store the electricity It can charges directly cell phones, usb fan, flashlights, tablets, watches, headphones and other mediums small usb electronic devices in the sunlight, Manufacturer: Uitndvyte