The listing, Solar Charger Camping Battery for Phone GPS has ended.
Check this out guys and gals! I have two of these and I decided to part with my backup. I haven't used this one other than to test that it works. You can strap this panel to the back of your pack and charge while hiking or sitting in the sun you can charge the included battery for nigh time use or connect your phone directly for daytime charging. I believe this unit puts out 2.0 amps. Any questions just ask happy bidding!