If this ever works....

[SmokinGamer]

http://www.thinkgeek. com/gadgets/travelpower/b1a6/?cpg=ab

Solar charger for e-cig?
I think so!

 

[Liberate_Yourself]

I had that same idea! I believe if it will put out a consistent 3.7v we should be good to go! (I have very limited electrical knowledge, so take that with a grain of salt)