According to the patent, Apple is trying to introduce a Smart Cover which will not only serve as a protective case but also serve as a power house which can transfer power to an iOS device. This Smart Cover will have an inductive charging coil which can transmit the power to iPad and not only this; a battery will also be placed in the Smart Cover which will charge the iPad.

The Smart Cover will charge the device when the display of iPad will be covered by the flap of the case and the cover would need to be plugged in to a charger to get the extra juice.