Wireless power has been a lab experiment for Intel for a few years now, and a few companies like Qi and PMA have managed to get a few devices on the market, but the power transmission was only good for a few feet. A startup called Energous is showing off wireless power charging at the Consumer Electronics Show that could be a game changer, because Energous claims its wireless power system, called WattUp, can power up a device from up to 20 feet away.