An energy conversion system is described for energy conversion and distribution including the conversion of vehicle-stored energy into electrical energy and the distribution of the electrical energy locally at the home or via a utility grid level. A single float actuates a stem of the overfill protection device as well as a rod of the level gauge. A controllable portal can be manipulated to open a flow path between the mixing section and the syringe barrel. Further, an attached condition is sensed, indicating whether the transmission section and the reception section are connectedattached to each other or disconnecteddetached from each other, and switching between wireless transmission and non-wireless transmission is performed in accordance with the indicated condition. The GM transitions the state of the gate to the committed state when the DOCSIS subsystem signals to the GM to transition the state of the gate to the committed state. The method also includes determining a current limit based on the rotational speed of the shaft using a substantially continuous function which relates a domain of rotational speeds to a range of current limits.