Powercast – Charge your phone through the air

In what has been billed as one of the best technological findings, Powercast has created a device that allows you to charge your cell phone battery (and other consumer electronics) vai the air.

It may sound futuristic, but Powercast’s platform uses nothing more complex than a radio–and is cheap enough for just about any company to incorporate into a product. A transmitter plugs into the wall, and a dime-size receiver (the real innovation, costing about $5 to make) can be embedded into any low-voltage device. The receiver turns radio waves into DC electricity, recharging the device’s battery at a distance of up to 3 feet.

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