A system for power smoothing in power distribution and methods are provided. In this invention, there is only one bar-shaped pivotal means needed in stead of the complex shafts in the conventional lighter. The processing system is arranged for obtaining a motion sensor output by processing the image output, wherein the motion sensor output includes information indicative of at least one of a motion status and an orientation status of the image-based motion sensor. An external tank is located exterior to the case.