We've seen the concept of electromotive (movement-based) charging before, but it usually comes at the cost of either a clunky design or a limitation to very low-power devices like watches. Apple has been experimenting with a concept that could power gadgets as big as iPhones and iPods with that spring in your step - and without the bulk of any extra wires. A newly published patent application uses flat, printed coils to generate electromagnetic induction through movable magnets; as the device bounces around in your pocket, the magnets slide past the coils and run them through the magnetic fields they need to build electricity.
Engadget , Apple trying for patent on electromotive charging, could use that confident stride to charge iPhones, Apple trying for patent on electromotive charging, could use that confident stride to charge iPhones
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