Take Zap! Tech Geeks, Starved for More Battery Power, Give Themselves a Charge.
Any geek can tell you that battery life hasn’t kept up with gadget innovations. But not to worry: Inventors are figuring out how to turn geeks into batteries.
While most gadget lovers hunt for empty wall sockets to charge their devices, Kevin Bartholomew just plugs his cellphone into his hip. That is where he keeps a nine-inch device looped around his belt that converts the kinetic energy of his motion into enough power to keep his devices running.