The North American Charging System (NACS), being standardized as SAE J3400, is an electric vehicle (EV) charging connector system developed by Tesla, Inc. It has been used by all North American market Tesla vehicles since 2021 and was opened for use by other manufacturers in November 2022. It is backwards compatible with the proprietary Tesla connectors made before 2021.
NACS alternating current (AC)/direct current (DC) connector (center), shown between SAE J1772 (left) and Type 2 (right) AC connectors. Non-NACS DC connectors are even larger.
A public NACS AC charging station
A vehicle equipped with a NACS charging inlet
NACS charging cable
Combined Charging System
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The Combined Charging System (CCS) is a standard for charging electric vehicles. It can use Combo 1 (CCS1) or Combo 2 (CCS2) connectors to provide power at up to 350 kilowatts (kW) . These two connectors are extensions of the IEC 62196 Type 1 and Type 2 connectors, with two additional direct current (DC) contacts to allow high-power DC fast charging. In response to demand for faster charging, 400 kW CCS chargers have been deployed by charging networks and 700 kW CCS chargers have been demonstrated.
CCS Combo 1 vehicle inlet showing the J1772 and the two DC fast-charging pins
Connectors: Combo 2 (left), compared to IEC Type 2 (right). Two large direct current (DC) pins are added below, and the four alternating current (AC) pins for neutral and three-phase are removed.
Typical Combined Charging System (Combo 2) vehicle inlet