Yes, the J1772 connector has a data pin. The Tesla Roadster can negotiate charge rate: http://www.teslamotors.com/roadster/charging/j1772-mobile-connector http:

Yes, the J1772 connector has a data pin. The Tesla Roadster can negotiate charge rate: http://www.teslamotors.com/roadster/charging/j1772-mobile-connector http://www.teslamotors.com/roadster/charging/j1772-mobile-co...