Abstract: A rotationally rechargeable electrical apparatus includes an electronic device with a back, a center of mass and a battery. An electrical generator at the back of the device has a rotor secured to the device and a stator having a flat contact surface extending parallel to the back of the device. The rotor and stator are rotatably connected together so that they can rotate relatively about an axis that extends perpendicular to the contact surface and passes through the center of mass. A voltage regulating circuit is connected electrically between the generator and the battery so that when the apparatus is placed on a support so that the contact surface frictionally engages the support and the device is spun about the axis, the generator produces an electrical output that is conditioned by the regulator circuit to charge the battery.

Abstract: A rotationally rechargeable electrical apparatus includes an electronic device with a back, a center of mass and a battery. An electrical generator at the back of the device has a rotor secured to the device and a stator having a flat contact surface extending parallel to the back of the device. The rotor and stator are rotatably connected together so that they can rotate relatively about an axis that extends perpendicular to the contact surface and passes through the center of mass. A voltage regulating circuit is connected electrically between the generator and the battery so that when the apparatus is placed on a support so that the contact surface frictionally engages the support and the device is spun about the axis, the generator produces an electrical output that is conditioned by the regulator circuit to charge the battery.