SAE J1772 vs CCS: Whats the difference

As electric vehicles (EVs) become more common, one challenge still confuses many drivers — different charging standards. Depending on where you live or travel, your EV might not fit every public EV charging station. In North America, most cars use the SAE J1772 plug for AC charging, while Europe relies on the Type 2 connector. These regional differences make it harder for drivers to charge smoothly when moving between networks or countries.

To help you understand this better, this article will explain the key differences between SAE J1772 and CCS (Combined Charging System) — two of the most common standards today. We’ll look at how each works, where they’re used, and how they affect charging speed and convenience. 

Whether you’re an EV owner, business investor, or EV charging solutions manufacturer, knowing these standards is essential for smart decisions. Understanding how J1772 and CCS fit into the EV ecosystem will help you choose the right equipment, plan infrastructure, and stay ahead in the fast-growing world of electric mobility.

What Is SAE J1772 Charging?

Definition and Overview

SAE J1772, also known as the J1772 standard or Type 1 connector, is the widely adopted AC charging connector for electric vehicles (EVs) in North America. This J1772 connector supports AC charging at Level 1 and Level 2, making it compatible with most home and workplace EV charging stations, and is a key component of modern charging infrastructures. It allows EV owners to charge at home, workplaces, or public EV charging stations. This standard is widely adopted because it ensures safe and consistent AC charging across different EV models, making it the default choice for many North American EVs.

Design and Function

The J1772 connector has a five-pin design: two power lines (line and neutral), one ground, and two signal lines that manage communication between the vehicle and the charger. This design allows the charger and EV to safely coordinate charging levels and prevent electrical hazards. Importantly, J1772 supports AC power only, meaning it does not enable DC fast charging. (en.wikipedia.org)

Charging Levels

J1772 supports both Level 1 (120 V) and Level 2 (240 V) charging, making it versatile for overnight home charging or workplace stations. As of February 2025, nearly all non-Tesla AC Level 2 public chargers in North America are equipped with J1772 plugs, highlighting its dominance in the market. (evchargingstations.com)

Common Use Cases

This connector is ideal for residential garages, office parking lots, and public Level 2 EV charging stations. For EV charging solutions manufacturers, understanding J1772’s specifications is essential when designing compatible chargers and infrastructure. With the global EV charging station market projected to grow from USD 28.47 billion in 2025 to USD 76.31 billion by 2032 (CAGR 15.1 %), having robust knowledge of AC standards like J1772 is crucial for staying competitive. (marketsandmarkets.com)

What Is CCS Charging? (Combined Charging System)

Definition and Overview

The CCS connectors, part of the Combined Charging System, provide a flexible charging solution by supporting both AC and DC charging. This design allows EV drivers to charge at home using AC or quickly recharge at public fast charging stations with high-power DC fast charging, reaching up to 350 kW on compatible EVs. CCS chargers are increasingly common in highway and urban EV charging infrastructures, simplifying charging for vehicles with advanced charging capabilities.It allows EV owners to use one interface for everyday charging and high-speed charging when needed, making it a convenient and universal solution for North America, Europe, and beyond.

Design and Function

CCS builds upon the base AC connector—SAE J1772 in North America or Type 2 in Europe—by adding two large DC pins beneath the original plug. (en.wikipedia.org)Users have noted that CCS plugs are heavier and larger, making them less convenient for frequent handling, whereas J1772 plugs are lighter and easier to insert and remove, which matters for daily home or workplace charging.
This design enables vehicles with a CCS inlet to charge via AC at home or workplace EV charging stations and switch seamlessly to DC fast charging at public stations without needing a different connector.

Types of CCS

There are two main versions: CCS Type 1 (Combo 1), used in North America and based on J1772, and CCS Type 2 (Combo 2), used in Europe, Australia, and other regions, based on Type 2. (en.wikipedia.org

) These regional variations ensure compatibility with local AC charging infrastructure while supporting DC fast charging globally.

Why CCS Matters

CCS has become the global standard for DC fast charging, dominating public charging networks outside Tesla. However, DC fast charging stations are significantly more expensive to build and maintain than Level 2 AC stations, not just in hardware cost but also in grid connection, transformers, and safety systems. This is an important consideration for commercial charging infrastructure planning.The global DC fast-charging station market was valued at USD 4.3 billion in 2022 and is projected to reach USD 121.5 billion by 2032, with CCS leading the segment. (alliedmarketresearch.com) For EV charging solutions manufacturers and infrastructure operators, CCS is essential because it supports both daily AC charging and high-power DC sessions, enabling cross-region interoperability and reducing the need for multiple connector types.

CCS vs J1772: Technical Comparison and Performance Differences

Power and Charging Speed

One of the biggest differences between J1772 chargers and CCS chargers is charging power. While the SAE J1772 connector delivers up to 19.2 kW through AC charging—suitable for overnight home or workplace sessions—CCS fast charging stations can deliver up to 350 kW of DC power, enabling EV drivers to gain hundreds of miles of range in less than an hour. Understanding these charging capabilities is essential for planning both home and public charging infrastructures. J1772 supports AC charging only, typically at Level 1 (120 V) or Level 2 (240 V), providing up to 19.2 kW in ideal conditions. This results in relatively slow charging, usually adding 10–30 miles of range per hour. For clarity, Level 1 charging adds roughly 2–5 miles per hour, while Level 2 can add 10–20+ miles per hour depending on power and vehicle model. DC fast charging with CCS can range from 50 kW (≈60–70 miles in 20 minutes) to 350 kW (≈180–200 miles in 30 minutes), giving drivers more precise expectations of charging time.In contrast, CCS supports both AC and high-power DC charging, with DC fast chargers delivering up to 350 kW, enabling some EVs to gain 200–250 miles of range in about 30 minutes. (insideevs.com)

Communication Protocol

J1772 uses a simple CP/PP signaling protocol to manage basic charging control, such as detecting connection and limiting current. CCS, however, employs PLC (ISO 15118) communication, allowing advanced features like Plug-and-Charge, dynamic power allocation, and future vehicle-to-grid (V2G) capabilities. (iso.org)This also means CCS supports more advanced safety features and smart charging capabilities, whereas J1772’s simpler protocol limits it to basic AC charging. Understanding these protocol differences is essential for network security and future-ready infrastructure planning. This difference is critical for high-power DC charging and smart charging solutions.

Connector Design and Compatibility

J1772 has a five-pin AC-only design, while CCS adds two additional DC pins below the AC section. This means CCS vehicles can use J1772 AC stations seamlessly, but J1772-only vehicles cannot access DC fast chargers due to missing hardware and safety concerns.

Comparison Table

Industry Insight

With the global EV charging station market projected to reach USD 76.31 billion by 2032 (marketsandmarkets.com), understanding these technical differences is essential for EV charging solutions manufacturers and infrastructure planners. CCS ensures flexibility for both AC and DC charging, while J1772 remains relevant for standard slow charging, making both standards key components of a comprehensive EV network.

Technical Comparison: J1772 vs CCS

Performance & Power

The J1772 connector supports AC charging only, typically up to about 19.2 kW, making it suitable for overnight or workplace charging but relatively slow. (en.wikipedia.org

) In contrast, CCS allows both AC and DC charging, with DC fast chargers delivering up to 350 kW, which can add 200–250 miles of range in around 30 minutes for compatible EVs. (en.wikipedia.org)

Charging Type

J1772 is limited to AC charging, while CCS combines AC and high-power DC in a single connector. This combination enables EV owners to use the same vehicle port for daily home charging and fast public DC charging, simplifying infrastructure requirements.

Communication Protocol

J1772 uses a basic CP/PP handshake for start/stop and current limits, offering minimal data exchange. CCS, on the other hand, supports PLC (ISO 15118) communication, enabling advanced features such as Plug-and-Charge, smart grid interaction, and future vehicle-to-grid (V2G) capabilities. This protocol difference is critical for enabling intelligent charging and higher power safety. (iso.org)

Connector Design & Future Support

J1772 features a five-pin AC-only design, while CCS adds two additional DC pins below the AC section. While J1772 remains common for home and workplace charging, CCS is widely adopted globally and increasingly dominates public fast-charging networks. (psmarketresearch.com)

Industry Insight

With the global EV charging station market projected to reach USD 76.31 billion by 2032, understanding these technical differences is crucial for EV charging solutions manufacturers and network planners. J1772 remains relevant for slow AC charging, while CCS ensures flexibility for both AC and high-power DC fast charging, making both standards essential for a comprehensive and future-ready EV infrastructure. (marketsandmarkets.com)

Compatibility and Adapter Use

Compatibility and adapters play a key role in making EV charging flexible and convenient. Because there are multiple connector standards, understanding how J1772, CCS, and Tesla connectors interact is crucial for EV owners, network planners, and EV charging solutions manufacturers.

J1772 to CCS Compatibility

Vehicles equipped with CCS connectors can seamlessly use J1772 chargers for AC charging because the upper portion of the CCS connector matches the J1772 standard. This ensures EV drivers can access a wide network of public charging stations without compatibility issues. For EV charging solutions manufacturers, designing infrastructures that support both J1772 connectors and CCS chargers is critical to maximize usability across multiple charging standards and connector types.It’s important to note that while CCS vehicles can charge at Level 2 AC stations, no safe adapters exist to allow J1772-only vehicles to use CCS DC fast chargers due to voltage, current, and communication protocol differences. This means that CCS-enabled EVs can charge at existing Level 2 AC stations without any additional adapters, making home, workplace, and public AC charging widely accessible. (energy.gov)

DC Charging Limitations

It is important to note that J1772-only vehicles cannot access CCS DC fast chargers. The J1772 connector lacks the additional DC pins required for high-power charging, making it physically and electrically incompatible with DC fast chargers. Attempting to adapt DC power to a J1772-only port is unsafe due to high voltage and current differences. (insideevs.com)

Important Safety Note

Adapters for DC charging are not interchangeable. Connecting a CCS DC fast charger to a J1772-only port is extremely dangerous due to differences in voltage, amperage, and communication protocols. For safety, EV owners should only use adapters approved by the vehicle manufacturer.

Industry Insight

As of 2025, approximately 90% of public Level 2 AC stations in North America use J1772 connectors, making compatibility essential for EV adoption.

For EV charging solutions manufacturers, designing infrastructure that supports both J1772 and CCS ensures maximum usability and prepares networks for the growing number of EVs capable of fast charging.

Frequently Asked Questions

Q: Is J1772 the same as Type 2?
A: No — J1772 is Type 1, used in North America; Type 2 is Europe’s version.

Q:Can I upgrade a J1772 EV to support CCS fast charging?
A: Generally no — it requires additional DC hardware and communication modules.

Q:What’s the difference between CCS1 and CCS2?
A: Structure and pin shape differ, but the underlying technology is the same; it depends on the region.

Q: Can a CCS-enabled EV charge at a J1772 station?
A: Yes — the upper part of the CCS connector is the same as J1772, so CCS EVs can charge at Level 2 AC stations without adapters.

Q: Can a J1772-only EV use a CCS DC fast charger?
A: No — J1772-only vehicles cannot A: A: access DC fast chargers because the connector lacks the necessary DC pins and safety communication protocols. Using an adapter for this is unsafe.

Q: Are there adapters that allow J1772 vehicles to use CCS chargers?
A: No safe adapters exist for this purpose due to high voltage, current, and protocol differences. EV owners should only use adapters approved by the vehicle manufacturer.

Conclusion

In summary, J1772 remains the standard for AC slow charging, ideal for home and workplace use, while CCS provides flexible AC and DC fast charging for long trips and time-sensitive scenarios. Looking ahead, the NACS (Tesla) standard is rapidly gaining adoption in North America, with major automakers like Ford and GM planning transitions, potentially reshaping regional infrastructure. Globally, CCS2 continues to dominate Europe and many international markets, while CHAdeMO and GB/T remain relevant in Asia. Awareness of these regional differences helps manufacturers and network operators plan compatible infrastructure and anticipate future interoperability challenges. Meanwhile, CCS2 continues to dominate Europe and global markets, ensuring reliable fast-charging networks. For EV charging solutions manufacturers and infrastructure planners, understanding these evolving standards is critical to designing future-ready, interoperable charging stations.