Our most powerful solar charger yet! At 21 watts with a 5V/3.5A output I can feel confident that I have all the free power right in my handz! Designed to the highest technical specifications and standards, this solar charger will supply yearz of maintenance free energy. It also comez in a neat folding case for easy travel and use. With three 28cm x 15cm solar panels I can tap into the sun’s radiance and power all my devicez anywhere! If you want a high power solar charger then this 21W Folding Solar Charger is the answer for you!