I'm going to just come out and say it: the iPhone's battery sucks molasses. Yep, even the iPhone 4's "longer lasting" battery. While there are power packs available to give your iPhone that extra juice, how how about going completely green — by charging it with wind?
If the idea of using wind to charge your iPhone intrigues you, then the iFan is exactly what the doctor ordered. The iFan is a modified PC fan molded into a rubber iPhone case. It's designer, Tjeerd Veenhoven states that it took him six hours to fully charge up his iPhone using the fan. Not too bad for air.
In the future, Veenhoven hopes to redesign the iFan's blades to speed up the charging process. Can you hear that? That's the sound of treehuggers everywhere giving batteries the fist pump. Oh yeah.