RaceTripper
macrumors 68030
To power and charge an iPhone on your bike, simply buy an external battery pack, like the Anker ones, and keep it in your saddle pack. Then run a lightning cable along the bike frame, held in place with cable ties.
That is a possibility. I first need to determine what my rate of battery use is while riding, and I'm not going to worry about figuring that out until I get an iPhone 5S.