Airnergy Charger Gets Its Electricity From WiFi Signals

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RCA, formerly known as Radio Corporation of America, presented a truly amazing gadget on the CES in Las Vegas, last week. Simply by transforming WLAN signals into energy the device, called "Airnergy", was "able to charge a BlackBerry from 30% to full in about 90 minutes, using nothing but ambient WiFi signals as a power source."

"This has been done before, but the Airnergy is able to harvest electricity with a high enough efficiency to make it practically useful.

The Airnergy has a battery inside it, so you can just carry it around and as long as you



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