The 6W SolarCru charger is the smallest and lightest foldable solar panel charger on the market. It’ll fit in your pocket or mount to your pack & charge your phone in 3.75 hours, or your tablet in 7.5 but you can also link up to 3 panels together, tripling the wattage to 16W which will charge your phone in just 1 hour. Its super-sensitive solar cells continue charging even in the shade. It comes with a battery bank to also give you backup power to use after the sun sets. The SolarCru weighs just over a 1/2 pound and is also water, heat, & scratch resistant. A funded Kickstarter.