NACS vs CCS: What the Charging Port Switch Means for Drivers

If you bought an electric vehicle in the last few years, you’ve probably heard that your charging port is going out of style. Most automakers selling EVs in North America have committed to the North American Charging Standard (NACS), the port Tesla designed, instead of the Combined Charging System (CCS1) port that most non-Tesla EVs used.

That raises practical questions. Will your car still charge? Do you need an adapter? Can you use Tesla Superchargers now? This guide answers them in plain language.

The short answer for drivers

• Your CCS car isn’t obsolete. CCS1 fast chargers remain widespread, and federally funded fast chargers must include a CCS1 connector under current federal rules.
• Supercharger access is expanding. Many automakers have arranged access for their CCS1 vehicles at Tesla Superchargers using an approved NACS adapter.
• New EVs are switching ports. Most automakers committed to building in the J3400 (NACS) port starting around 2025, so new models increasingly arrive with it.
• Adapters bridge the gap. NACS cars may need a CCS1 adapter at some stations, and CCS1 cars need a NACS adapter at many Superchargers.

NACS, CCS and J3400 explained

CCS1 (Combined Charging System) combines the J1772 plug used for home and Level 2 charging with 2 extra DC pins below it for fast charging. It became the standard port on most non-Tesla EVs in North America, and most third-party fast-charging networks were built around it.

NACS (North American Charging Standard) is Tesla’s connector. Tesla opened the design to other companies and renamed it NACS in November 2022. It’s notably smaller than CCS1 and uses the same pins for both AC and DC charging.

SAE J3400 is the formal industry standard based on NACS. According to the federal Joint Office of Energy and Transportation, SAE International published J3400 as a Technical Information Report in December 2023, and its task force voted in August 2024 to make it a Recommended Practice. SAE lists the Recommended Practice as published in September 2024, with companion documents covering adapters and connector dimensions.

In other words: NACS is the name most drivers use, and J3400 is the official standard version of it.

Why automakers are switching

Several reasons pushed the industry toward NACS:

• Charger reliability and coverage. Tesla’s Supercharger network is large and widely seen as dependable, and NACS gives other brands’ drivers native access to it.
• A smaller, simpler connector. The NACS plug is lighter and easier to handle than CCS1, and it uses one port for all charging levels.
• One port for North America. A single standard reduces confusion for drivers and costs for charging companies over time.

The Joint Office notes that most vehicle manufacturers committed to incorporating the J3400 connector beginning in 2025. Exact timing varies by brand and model, so check each model’s specifications.

Key takeaway: You don’t need to sell a CCS car because of the port switch. Get the adapter your automaker approves, check which Superchargers your car can use, and keep using CCS stations as before.

What current CCS owners should know

Supercharger access depends on your automaker. Tesla’s support page lists many brands whose vehicles can charge at NACS Superchargers. Access usually works through the Tesla app or your automaker’s app, and payment is set up in the app. Not every Supercharger is open to non-Tesla vehicles, so use the app or Tesla’s map to find compatible sites.

You need the right adapter. Tesla’s support page says CCS1 vehicles need a NACS DC adapter provided by Tesla or the vehicle manufacturer, and that third-party adapters are prohibited at Superchargers for safety reasons. Many automakers sell an approved adapter, and some offered them free for a limited time.

Expect some quirks. - Cable reach: Supercharger cables were designed for Tesla port locations, so some vehicles must park awkwardly or take up more than 1 stall. Follow on-site guidance. - Charging speed: Speed depends on your vehicle’s maximum charging rate, its battery temperature and the station. An adapter shouldn’t be assumed to deliver your car’s peak rate everywhere. - Pricing: Supercharger rates vary by location and time of day, and memberships can change the price. Check the app before you plug in.

Home charging doesn’t change. Your J1772 Level 2 home charger keeps working with your CCS1 car. If you later buy a NACS car, you can use a J1772-to-NACS adapter or install a NACS-compatible charger. Our guide on how to install a Level 2 EV charger at home covers the options.

Adapter safety: what to look for

Adapters carry high current, so quality matters.

• Use your automaker’s approved adapter for DC fast charging. The Joint Office advises drivers to use the adapter their vehicle manufacturer provides and to follow its instructions until certified adapters are widely available.
• Look for UL 2252 certification. The Joint Office identifies UL 2252 as the safety standard for EV charging adapters.
• Match the adapter to the job. A Level 2 AC adapter (J1772 to NACS) isn’t the same as a DC fast-charging adapter. Using the wrong one can fail or be unsafe.
• Inspect it regularly. Don’t use an adapter that’s cracked, loose, discolored or hot to the touch. Store it clean and dry.
• Avoid cheap no-name adapters for fast charging, even if they physically fit.

What new EV buyers should know

If you’re shopping for an EV now:

1. Check which port the car has. Some model years have CCS1 and newer ones have NACS. Mid-transition models may differ by build date.
2. Ask which adapters are included. A NACS car may need a CCS1 adapter for some non-Tesla fast chargers, and many automakers include or sell one.
3. Confirm network access in the automaker’s app, including Superchargers and the third-party networks you’ll use most.
4. Think about your routes. If you road-trip often, map fast chargers on your usual routes using the app or the Department of Energy’s station locator.
5. Factor in charging costs. Our breakdown of EV charging cost at home vs public shows how fast charging compares with charging at home.

Buying used? A CCS1 car is still a good buy if the price reflects its age, the battery is healthy and you can get an approved adapter. Use our used EV battery health checklist and read how long EV batteries last.

Public charging and federal funding

Under the FHWA minimum standards described by the Joint Office, each DC fast-charging port at a federally funded station must have a permanently attached CCS1 connector. Stations can also include J3400 connectors, and integrated adapters can qualify when permanently attached by the charger manufacturer. That means many public stations built with federal support offer CCS1 cables, often alongside NACS.

Private networks are adding NACS cables at their own pace, so connector mixes vary by station. Check the app or station listing for connector types before you arrive. This is not legal advice; rules may change, so check the Joint Office and FHWA for updates.

Where to start: a checklist for current EV owners

1. Look up your automaker’s Supercharger access and order the approved NACS adapter if you’ll use Superchargers.
2. Download the apps you need, including the Tesla app or your automaker’s app with charging built in, and add a payment method.
3. Check compatible stations on your regular routes before a road trip.
4. Store the adapter in the car with its instructions, and inspect it before each use.
5. Keep your home setup as is unless you buy a NACS car, then add an adapter or a NACS-compatible charger.
6. Watch for software updates from your automaker that improve charging compatibility.

If you’re still deciding on an EV, our hybrid vs plug-in hybrid vs EV comparison is a good starting point.

Conclusion

The NACS vs CCS switch sounds dramatic, but for most drivers it’s an adapter question, not a crisis. New EVs are moving to the J3400 (NACS) port, CCS1 cars gain access to many Tesla Superchargers through approved adapters, and CCS fast chargers aren’t going away soon. Get the adapter your automaker approves, check station compatibility in the app and charge at home whenever you can. Find more EV terms in our glossary.

Sources

• Joint Office of Energy and Transportation: SAE J3400 charging connector — J3400 timeline, automaker commitments and federal CCS1 requirements
• Joint Office of Energy and Transportation: Adapter compatibility — adapter safety guidance and UL 2252
• SAE International: J3400 North American Charging System (NACS) Recommended Practice — September 2024 Recommended Practice publication
• Tesla Support: Supercharging other EVs — non-Tesla access, approved adapters and third-party adapter prohibition