Finding
North America picked NACS for cars and MCS for trucks; the chargers are still catching up with the cars
Nearly every automaker selling EVs in North America has moved or committed to the NACS port, standardized as SAE J3400, and most 2026 models ship with it. Chargers lag: NACS was 23% of new non-Tesla fast-charging connectors in Q3 2026, up from 9% a year earlier but flat for three quarters (Paren).
The flat line reflects how networks hedge. Most new non-Tesla sites install both cables because the US fleet still has millions of CCS1 cars, and federal NEVI rules required CCS1 until they were revised. Adapters cover the gap in both directions, so the transition is less about access than about cost and cable count per stall.
For heavy vehicles the standard is settled on paper: SAE J3271 (March 2025) defines the Megawatt Charging System up to 3.75 MW, and IEC TS 63379 (February 2026) covers the connector. China runs its own path: GB/T for today's fleet, ChaoJi for the next generation, and maker extensions on top, led by BYD's 1,000 kW flash charging (2025) and Huawei's liquid-cooled chargers. Europe stays on CCS2, which the AFIR regulation requires at public fast chargers.
Connectors
Charging connectors compared
Ratings are the connector or standard limits; deployed chargers usually run lower. Tesla Supercharger generations are covered in Tesla Supercharger Network.
| Connector | Standard | Region | AC/DC | Max voltage | Max current | Max power | Notes |
|---|---|---|---|---|---|---|---|
| SAE J1772 | SAE J1772 | North America, Japan, South Korea | AC | 240 V single-phase | 80 A | 19.2 kW | AC plug on most non-Tesla US cars to date; NACS cars use an adapter |
| NACS | SAE J3400 | North America; Tesla in Japan and South Korea | AC and DC | 1,000 V DC | 80 A AC; higher DC with liquid-cooled cables | 500 kW deployed (V4 cabinet) | Default port on most 2026 North American models; one plug for AC and DC |
| Type 2 | IEC 62196-2 | Europe, Australia, much of Asia | AC | 400 V three-phase | 63 A | 43 kW (22 kW typical) | EU AC standard; required at public AC points under AFIR |
| CCS1 | SAE J1772 Combo (IEC 62196-3) | North America, South Korea | DC (AC through the J1772 part) | 1,000 V | 500 A | 500 kW | Required on NEVI-funded stations alongside NACS; new cars moving to NACS |
| CCS2 | IEC 62196-3 | Europe, Australia, India, Middle East, much of Asia | DC (AC through the Type 2 part) | 1,000 V | 500 A | 500 kW | EU fast-charging standard under AFIR |
| CHAdeMO | IEC 62196-3 (configuration AA); JEVS G105 | Japan; legacy elsewhere | DC | 1,000 V (2.0) | 400 A (2.0) | 400 kW in the 2.0 specification; most sites 50-100 kW | Nissan Leaf and older Japanese EVs; early bidirectional (V2H, V2G) projects |
| GB/T AC | GB/T 20234.2 | China | AC | 440 V three-phase | 63 A | about 7 kW typical (single-phase) | China home and public AC |
| GB/T DC | GB/T 20234.3 | China | DC | 1,000 V | 250 A (2015 edition) | about 250 kW (2015 edition) | China public fast charging; later revisions and maker extensions (BYD, Huawei) raise current with liquid-cooled cables |
| ChaoJi | CHAdeMO 3.0 / GB/T ChaoJi | China, Japan (planned) | DC | 1,500 V | 600 A | 900 kW | Joint China-Japan next-generation connector; small deployment so far |
| MCS | SAE J3271; IEC TS 63379 | Global, heavy duty | DC | 1,250 V | 3,000 A | 3.75 MW | Trucks, buses, mining and marine; SAE J3271 published March 2025, IEC TS 63379 February 2026 |
| Wireless | SAE J2954 | Global | AC (inductive) | - | - | 11 kW light duty (WPT3) | Parking pads for fleets and robotaxis; heavy-duty work under SAE J2954/2 |
Standards
The standards behind the plug
Communication, roaming and funding rules decide what a plug can do as much as its pins.
| Standard | Covers | Region | Notes |
|---|---|---|---|
| SAE J3400 | NACS connector, AC and DC | North America | Default port for new cars from 2025-26 |
| SAE J1772 / CCS1 | AC plug and combined DC inlet | North America | Installed base; still on most non-Tesla chargers |
| IEC 62196 / CCS2 | Type 2 AC and combined DC | Europe, much of the world | AFIR requirement at EU public chargers |
| GB/T 20234 and GB/T 27930 | Connectors and charger-vehicle communication | China | ChaoJi is the planned high-power successor |
| SAE J3271 / IEC TS 63379 | Megawatt Charging System | Global, heavy duty | Up to 3.75 MW; published 2025-26 |
| ISO 15118-2 and -20 | Vehicle-charger communication | Global | Plug and Charge; -20 adds bidirectional power |
| DIN SPEC 70121 | DC charging communication | Europe, North America | Older CCS cars still use it |
| OCPP 2.0.1 | Charger-to-network software protocol | Global | Required for NEVI-funded stations |
| OCPI | Roaming between networks | Europe, growing in the US | Lets one app or card pay on many networks |
| SAE J2954 | Wireless power transfer | Global | Pads for fleets and robotaxis |
| 23 CFR 680 (NEVI) | US federal funding rules | United States | 97% port uptime, 150 kW per port, CCS1 required with NACS allowed alongside, Buy America |
| EU Regulation 2023/1804 (AFIR) | EU charging deployment rules | European Union | 400 kW pools every 60 km on the core TEN-T network; card payment |
Safety
Safety and certification standards
Charger makers certify to IEC standards for most markets and UL standards for North America.
| Standard | Covers | Applies in |
|---|---|---|
| IEC 61851 / UL 2594 / UL 2202 | Charging station safety (AC and DC) | IEC worldwide; UL in North America |
| IEC 62196 / UL 2251 | Plugs, sockets, connectors and inlets | IEC worldwide; UL in North America |
| IEC 62752 / UL 2231 | Personnel protection: in-cable control and protection devices | IEC worldwide; UL in North America |
| IEC 62893 | Charging cables, including liquid-cooled cables | Worldwide |
| IEC 61439-7 | Low-voltage switchgear assemblies for charging stations | Worldwide |
| IEC 61980 | Wireless charging system safety | Worldwide |
| NEC Article 625 (NFPA 70) | Installation of EV charging equipment | United States |
| NFPA 70E and OSHA rules | Electrical safety for installers and technicians | United States |
| EU directives 2014/35/EU, 2014/30/EU, 2014/53/EU | Low voltage, electromagnetic compatibility, radio equipment (CE marking) | European Union |
| JIS D1304 and Japanese national rules | National counterparts to the IEC standards | Japan |
Sources
Sources and scope
- Scope
- EV Charging Connectors and Standards
- Sources
- Paren Q3 2026 (NACS share); SAE J1772, J3400, J3271, J2954; IEC 62196, 61851, TS 63379; GB/T 20234; FHWA 23 CFR 680; EU Regulation 2023/1804; ElectronsX connector table (connectors)
- Updated
- October 2026