EV connectors: NACS, CCS, CHAdeMO and the rest
The plug on your car decides which chargers you can use without an adapter. Here is how the major standards differ, where each is used, and what to check before you rely on an adapter on a road trip.
The connectors at a glance
| Connector | AC / DC | Main regions | Notes |
|---|---|---|---|
| NACS (SAE J3400) | Both, one compact plug | North America | Originally Tesla's design; standardised by SAE and adopted by most North American automakers for new models. |
| CCS1 (Combo 1) | Both — J1772 AC plug plus two DC pins | North America, parts of Asia | The long-time non-Tesla standard in the US and Canada; still widespread on chargers and older cars. |
| J1772 (Type 1) | AC only | North America, Japan | Level 1 and Level 2 charging. |
| CCS2 (Combo 2) | Both — Type 2 plug plus two DC pins | Europe, UK, India, Australia, much of the world | The most common DC standard outside North America, Japan and China. |
| Type 2 (Mennekes) | AC (single or three-phase) | Europe and many other regions | Can deliver up to ~22 kW AC where three-phase supply exists. |
| CHAdeMO | DC | Japan; legacy elsewhere | Used by some older models; new chargers outside Japan increasingly omit it. |
| GB/T | Separate AC and DC plugs | China | China's national standard. |
North America: the shift to J3400
For years North America had two DC standards: Tesla's connector and CCS1 for everyone else. After Tesla opened its design and SAE published it as J3400, most automakers announced J3400 ports on new vehicles and opened access to Tesla's Supercharger network for their customers, often via an adapter for cars built with CCS1 ports. Charging networks have been adding J3400 cables alongside CCS1.
Practical result: for the next several years you will see both plugs. If your car has a CCS1 port, you can still use the large CCS1 network directly, and — where your automaker has enabled it — use J3400 stations with an approved adapter.
What adapters can and cannot do
- They change the shape, not the electronics. The car and charger must also speak a compatible protocol and the network must allow your car to start a session.
- Use automaker-approved or certified adapters. DC adapters carry hundreds of amps; cheap ones can overheat. Check your manufacturer's list.
- Power can be limited. Adapters and some stall configurations cap current; expect occasional slower sessions.
- Cable reach matters. Some stations were laid out for a port on a specific corner of the car; park accordingly and never strain the cable.
Outside North America
In Europe, the UK, India, Australia and many other markets, the norm is Type 2 for AC and CCS2 for DC, so nearly every new car and fast charger matches. China uses GB/T, and Japan continues to use CHAdeMO for DC. If you import a vehicle, confirm both its plug and its communication protocol before assuming local chargers will work.
How to check your car
- Look at the inlet: count the pins and note whether DC pins sit below an AC plug (CCS) or within one compact plug (J3400).
- Check the owner's manual for maximum DC power and supported adapters.
- In charging apps, filter by your connector so you only see compatible stalls.
Then plan the trip with our road-trip calculator.
Connector and network names are trademarks of their respective owners and are used for identification only. Industry adoption changes quickly; always confirm with your vehicle manufacturer.