A method and apparatus that allows the end user to optimize the performance of an all-electric or hybrid vehicle and its charging system for a desired mode of operation is provided. An elongate ultrasonic waveguide assembly extends within the housing and is operable at a predetermined ultrasonic frequency and a predetermined electrode potential to ultrasonically energize and electrolyze liquid within the housing. A load buss is also disposed within the housing and is electrically connected to the load connector. A variety of different configurations of protruding portions extending from the band clamp may be applied to further improve electrical performance. A noise power is estimated by averaging signal energy on each basis function other than the first basis function and accumulating the averaged signal energy from the basis function other than the first basis function and scaling the accumulated signal energy to account for a noise estimate from the first basis function. A first sleeve is positioned about the shank when the shank is retained to the clamp member.