Powermat Wireless Charging System
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. Pad $60– $100; adapters $20–$40.