Nokia Taking Different Path to Wireless Charging
Nokia researchers are working to develop a way for phones to charge by capturing ambient radio waves. Radio waves are emitted by all sorts of electronics, and Nokia's research is focused on a way to harvest this energy as it hits the phone's battery. Using technology similar to RFID, Nokia is converting the electromagnetic energy into an actual electrical current. Nokia can currently "harvest" 3 to 5 milliwatts of power, but says 50 milliwatts is needed to charge a phone that is powered off. Nokia has not indicated if or when this technology would be mature enough to use in end-user devices.
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