There should plenty of Warmshowers folks along the way. Even if you don't want to sleep in their home, I'm sure they would not object to you plugging in while you camp out in the backyard. Asking nicely and some token of your appreciation are always in order. For smaller favors like this, I brought along refrigerator magnets form my home town, they are small light and inexpensive but the small gift shows you have anticipated that folks would be doing you a kindness and you wanted to be prepared to show your appreciation. You can use your imagination of token gifts from your hometown.
There are hostels along the way. You can get a cheap place to stay and have a place to charge your cell.
Last edited by spinnaker; 08-06-08 at 05:58 PM.