Very interesting artucle.
But putting solar cells around the e-Cig to charge it would never work, even in theory. The cig. area is just too small to generate enough power even if the cells had 100% efficiency and you held them in the sun. Out of the sun and it's even more ridiculous.
I don't know about that because I have a 8 year old G-Shock with solar technology and it is pretty impressive on how it works and their new watches are even more advanced now.
This is off their web site about their New technology
Non-Stop
A solar panel converts even weak illumination from fluorescent lighting into electric power. A rechargeable battery with a large power storage capacity supports stable operation of various functions with high electricity consumption. You never have to worry about the battery running down because it's a solar battery.
Solar Powered
Casio watches with solar technology , receive thermal and electrical energy that recharges the watch
batteries through solar panels on the face of the watch.
And the New Generation of these watches are Bluetooth and wireless technology that control your smartphone.
Now I know
mods pull way more power but Solar technology has come a long way, and being a owner of a iTaste 134 I think they will have no problem putting solar panels on the bigger
mods.