Free: Contests & Raffles.
I use a Rayovac charger that uses 4 AA batteries. I have extra batteries anyway for my flashlight and GPS so if I need to charge a phone I can. If I drain it and need to charge again pop in more batteries.
Thanks for the suggestions. Smossy girl, I have service pretty much everywhere in the wilderness except in the major creek drainage. The creek crossing may or may not be difficult (we will see how much snow we get in march and april) so I am kind of holding off on the spot. I plan on walking west to the pct and then down the pct to the nearest highway if the creek is too high/fast.
Its four days man, just turn your phone off until you need to make a call. If you plan on hitting the pct you should be able to cover more than 13 miles a day, unless that's all your wanting to do in a day.