The Combined Charging System (CCS) is a charging station standard for plug-in electric vehicles that uses the Combo 1 (CCS1) or Combo 2 (CCS2) connectors, which are extensions of the IEC 62196 Type 1 and Type 2 alternating current (AC) connectors, respectively, each with two additional direct current (DC) contacts to allow high-power fast charging. CCS chargers can provide power to electric vehicle batteries at up to 500 kW, and in response to demands for even faster charging, 400 kW CCS chargers have been deployed by charging networks and 990 kW CCS chargers have been demonstrated.