Nanotech Battery
Energy is one of the main boundaries for wearable computing. The news just sounds to amazing to be true: battery power that is woven into textiles. In other words – I dream about cable-less energy for a long time now 
) Just read:
Enter the nanotechnological battery, the new lightweight and powerful engine of high-tech dreams, making everything possible from Ball's rope ascender to hybrid vehicles capable of getting 150 miles per gallon to battery-powered fabrics that will let soldiers plug electronic devices into their uniforms.
And read on: Nanotech will let us wear batteries and get 150 m.p.g. – USATODAY.com