This year, Powermat delivered a practical way to charge gadgets without power cords. Electric toothbrushes have used the underlying magnetic-induction technology for years, but Powermat’s system makes wireless charging widely practical. A charging pad accommodates multiple devices simultaneously, compact case adapters fit a wide variety of products, embedded radio-frequency chips communicate the device’s power requirements, and magnets align the device and the pad with a satisfying tug. [http://www.popsci.com]
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