Robert Bosch GmbH supplies all the powertrain components for the 500e, including the electric motor, power electronics, and battery. The motor, which Bosch have designated the SMG ("sequential motor-generator") 180/120, is shared with other vehicles, including the smart fortwo electric and PSA GROUP's HYbrid4. The SMG 180/120 weighs just and spins at a speed up to 12,500 rpm. The inverter, designated INVCON 2.3 by Bosch, converts direct current energy stored in the traction battery to alternating current for the SMG 180/120 and weighs less than in a package (L×W×H), including connectors. Chrysler developed and integrated the electric powertrain, and reportedly had been working on an electrified 500 even before the company was purchased by Fiat. "Ward's" named the 500e powertrain to its list of 10 Best Engines for 2014.