I have spent my entire weekend trying to locate a place where I can buy a 5 Volts - 2100mAh Electric Motor/Generator. My goal is to spin this motor up to a certain RPM to generate the 5 volts and 2100mAh required to charge an iPad. It's an experiment I've been trying to accomplish for some time now.
Can you kindly point me in the right direction? Is there such a motor in the first place? If I need to somehow modify an exiting one, where can I read about doing so to these specifications?