The Nomad 20 Solar Panel combines highly efficient mono-crystalline technology in a foldable, portable, plug-and-play form. With a built-in junction box and innovative smart chip, the Nomad 20 can directly charge handheld USB and 12 Volt devices directly from the sun, just as fast as the wall. Combine the Nomad 20 Solar Panel with any of Goal Zero"s power packs and store power to charge your gear day or night.