Portable Solar Panels: A Bright Idea

Do you have a portable solar panel?  Imagine this... You have planned meticulously for your hiking trip, all the way down to your satellite phone for emergency use.  You have just finished hiking all day through the beautiful Peruvian Mountains and are ready to rest and call home.   You reach into your pack for the satellite phone and realize that it was accidentally left out of its protective holster and has been jostling around in your backpack all day.  Some how its power button was pressed and now the battery is dead.  You are two full hiking days from your first check point with electricity.  Is it time to panic?
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