A two-wheeled electric vehicle includes a main frame extending rearward and downward from a head pipe, a swing arm swingably supported by a rear portion of the main frame, and an electric motor serving as a drive source. The dc offset compensator comprises a processor configured to sample the ac current signal, generate a rotating vector from the sample, extract a dc offset from the sample and to generate a dc offset signal correction voltage from the dc offset. Second search results are created by searching for devices associated with a second energy management device identifier using a second discovery protocol. The waste ejection vessel is provided to the waste ejection board and able to be moved between a waste ejection position and a retreated position by the waste ejection board moving stage. The plurality of parallel baffles in a row are angled such that when a polymeric melt contacts a given baffle the polymeric melt moves in a downward direction under the force of gravity.