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Electric vehicles (EVs) hold the potential to greatly shape the way the electric power grid functions. As a load, EVs can be managed to prevent overloads on the electric power system. EVs with bidirectional power flow (V2G) can provide a wide range of services, including load balancing, and can be used to increase integration of renewable resources into electric power markets. Realizing the potential of EVs requires more advanced communication than the technology that is in wide use. Common charging standards do not include a means for an EV to send key vehicle characteristics such as maximum charge rate or battery capacity to a charging station and thus to the grid. In response to the need for a means of obtaining vehicle parameters without advanced communication, this paper suggests a mechanism that would allow electric vehicle supply equipment (EVSE) to identify the type (manufacturer, model and year) of the vehicle plugged in, and so learn several of the needed parameters.