I doesn't work so easily to recharge a battery in a microwave. But the great innovators from Apple found a way: you either need the iPhone-Microwave-Adapter-Pouch (59$) or, like a real pro, get the complete Apple Microwave (599$). Watch out, it is not meant to prepare food, only charging i-Products. The good thing is, you can dump all your devices in there at once and then hit GO!