Chinese EV Charging Connectors: GB/T vs CCS vs ChaoJi Guide

If you are importing a Chinese EV, traveling internationally with one, or simply trying to understand the charging ecosystem, the connector standard is the critical interface between your vehicle and the charging network. China uses its own national standards—collectively known as GB/T—which differ physically and electrically from the CCS and NACS connectors prevalent in Europe and North America. This guide explains the current landscape and the next-generation ChaoJi standard that promises global unification.

The Current Standard: GB/T 20234

China's national EV charging standard, GB/T 20234, defines separate connector designs for AC and DC charging. The AC connector (GB/T 20234.2) is a 7-pin circular design supporting single-phase 220V/32A (7 kW) and three-phase 380V/63A (up to 40 kW). The DC connector (GB/T 20234.3) uses a larger 9-pin design capable of delivering up to 250 kW at 750V/250A under the current specification, though real-world implementations have pushed beyond these ratings. Unlike CCS, which combines AC and DC into a single connector footprint, GB/T keeps them physically separate—every Chinese EV has two charging ports or a combined port with two distinct connector areas.

GB/T vs International Standards

The Next Generation: ChaoJi

ChaoJi is a next-generation DC charging standard jointly developed by the China Electricity Council (CEC) and Japan's CHAdeMO Association, with the ambitious goal of creating a truly global ultra-fast charging standard. ChaoJi supports up to 1,500V and 600A (900 kW theoretical maximum), uses a compact connector compatible with a new combined AC/DC port design, and incorporates liquid cooling for the cable and connector. It is backward-compatible with GB/T DC through an adapter and with CHAdeMO through a separate adapter. ChaoJi was formally adopted as China's next national DC charging standard (GB/T 20234.4) and is expected to begin appearing on production Chinese EVs from 2025-2026, with full ecosystem rollout over the following years.

What This Means for Chinese EV Exports

For Chinese EVs exported to Europe, manufacturers typically equip vehicles with CCS2 connectors directly from the factory—BYD, NIO, XPeng, and Zeekr all produce CCS2-native versions for European markets. The same applies for right-hand-drive markets like Australia and the UK. This factory-level adaptation eliminates the need for aftermarket adapters and ensures full compatibility with local charging networks. For used Chinese EVs imported privately into non-GB/T markets, adapter solutions exist but require careful verification of electrical compatibility—particularly for DC fast charging, where protocol differences (GB/T 27930 vs ISO 15118 vs CHAdeMO) can prevent communication between the vehicle and charger even with a physical adapter.

Charging Protocol Communication: More Than Just Physical Pins

Beyond the physical connector, the communication protocol between the EV and the charger is equally important for compatibility. China uses the GB/T 27930 protocol for DC charging communication, which defines how the vehicle and charger negotiate voltage, current, and charging parameters. Europe and North America use ISO 15118, which adds support for plug-and-charge (automatic authentication without apps or cards) and bidirectional charging. Japan uses CHAdeMO's proprietary protocol. These protocol differences mean that even with a physical adapter, a GB/T vehicle may not successfully communicate with a CCS charger for DC fast charging. The ChaoJi standard addresses this by adopting a protocol compatible with both GB/T 27930 and ISO 15118, creating a bridge between the Chinese and international charging ecosystems.

The Chinese Charging Network: Scale and Speed

China's public charging infrastructure is the largest and fastest-growing in the world. As of early 2026, China has deployed over 8 million public charging points, including more than 1.2 million DC fast chargers. The country is adding roughly 100,000 new public charging points per month. Major operators include State Grid, TELD (over 500,000 chargers), Star Charge, and automaker-backed networks from NIO (Power Swap stations and chargers), XPeng (S4 ultra-fast chargers at 480 kW), and Tesla (Supercharger network with over 10,000 stalls in China). All public chargers in China use the GB/T standard, ensuring universal compatibility for domestic-market EVs.

FAQ

Will China eventually adopt CCS or NACS instead of GB/T?

No. China has invested billions in the GB/T ecosystem and is now transitioning to the more advanced ChaoJi standard rather than adopting foreign standards. ChaoJi is technically superior to current CCS implementations in maximum power and connector design, and China's domestic market is large enough to sustain its own standard independently.

Can I charge a Chinese-market EV in Europe?

Not directly. A Chinese-market EV equipped with GB/T ports cannot plug into European CCS2 chargers without both a physical adapter and a communication protocol converter. For DC fast charging, this is technically complex and currently not supported by any commercially available adapter. Factory-export models with native CCS2 ports are the only practical solution for regular European use.

Will ChaoJi unify global charging standards?

ChaoJi has strong technical merit—it is arguably the most forward-looking DC charging standard, supporting ultra-high power with a compact, ergonomic connector. However, global unification faces significant political and commercial inertia: Europe has invested heavily in CCS2 infrastructure, and North America is coalescing around NACS. ChaoJi is most likely to become the dominant standard across China and parts of Asia, with adapter-based interoperability for international travel rather than full global adoption.

What is the difference between GB/T AC and GB/T DC connectors?

GB/T AC uses a smaller 7-pin circular connector for home and destination charging (up to ~40 kW). GB/T DC uses a larger, more robust 9-pin connector for public fast charging stations. Chinese EVs have separate physical ports for each or a combined port that accommodates both connectors. This differs from CCS and NACS, which use a single combined connector design.

Practical Implications for Chinese EV Importers

For businesses and individuals importing Chinese EVs into non-GB/T markets, charging compatibility should be verified before purchase. Most major Chinese manufacturers now offer factory-CCS2 versions for export markets at little or no additional cost. For grey-market imports of domestic Chinese models, the charging situation is more complex. AC charging can be adapted relatively easily with a GB/T-to-Type-2 adapter cable (passive device, widely available), but DC fast charging adaptation currently has no reliable commercial solution due to the protocol incompatibility between GB/T 27930 and ISO 15118 or CHAdeMO. Some specialized EV conversion shops in markets with significant Chinese EV imports (such as the Middle East and Southeast Asia) offer DC charging system retrofits, but these are expensive and may void manufacturer warranties. For most importers, purchasing the factory-export version with native CCS2 is the recommended path. As ChaoJi rolls out and its ISO 15118-compatible protocol becomes established, the charging compatibility landscape should improve significantly for internationally-traveled Chinese EVs.

Bottom Line

China's GB/T charging standard serves the world's largest EV market effectively, but the transition to ChaoJi represents the next logical step—enabling 900 kW+ charging speeds and a path toward international interoperability. For individual buyers, the key takeaway is simple: if you plan to use a Chinese EV primarily within China, GB/T works seamlessly; if exporting or traveling abroad, factory-CCS2 models are the practical choice. For ongoing updates on Chinese EV technology and infrastructure, visit AutoCN's charging section.