Are CCS to CHAdeMO adapters safe to use?
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CCS to CHAdeMO adapters can be used safely when they are compatible with the vehicle and used according to the instructions.
These adapters are already used by CHAdeMO drivers in many countries, and real-world experience is broadly reassuring. The issues we have heard about have most commonly related to charger compatibility, firmware, or charging sessions that fail to start.
As with any equipment used for DC fast charging, it is important to use an adapter that is suitable for your vehicle, follow the operating instructions and keep the equipment in good condition.
What exactly is a CCS to CHAdeMO adapter and how does it work?
A CCS to CHAdeMO adapter is a conversion device that allows CHAdeMO-equipped electric vehicles to charge at CCS fast-charging stations.
In Norway, this normally means connecting a CCS2 charging cable to the vehicle’s CHAdeMO port.
The adapter sits between the CCS charging cable and the vehicle and translates the communication between the two different charging standards.
The technology behind these adapters is relatively sophisticated because CCS and CHAdeMO do not use the same communication system. In simple terms, CCS uses PLC-based communication, while CHAdeMO uses CAN-based messaging.
The adapter therefore has to translate these messages in real time and manage communication between the charging station and the vehicle so that charging can begin using parameters accepted by both sides.
The adapter does not simply connect the charger directly to the vehicle battery. The vehicle and charging station remain actively involved throughout the charging process and continue to control the charging session.
Are CCS to CHAdeMO adapters actually safe to use with your electric vehicle?
There is no reason to assume that using a CCS to CHAdeMO adapter is unsafe simply because an adapter is involved.
As with any equipment used for DC fast charging, the adapter should be suitable for the vehicle, used correctly and kept in good condition.
Some practical things worth checking are:
- a clearly identified manufacturer or importer
- clear technical specifications and operating limits
- compatibility information for your vehicle
- proper operating instructions
- accessible customer support
- a clear firmware update process
How is safe charging maintained?
A CCS to CHAdeMO adapter works as part of a larger charging system that includes the car, the adapter and the charging station.
Before and during charging, the car and charger exchange information about the charging session. The adapter translates this communication between the CCS and CHAdeMO protocols.
The vehicle itself remains responsible for its own charging limits and battery management. The adapter does not bypass the vehicle’s battery management system or force the battery to accept more power than the vehicle requests.
Likewise, a CCS charger with a very high advertised output does not automatically send that full power to the car. The actual charging power is determined by the vehicle, charger and charging conditions.
Why results can still vary
In everyday use, many owners report reliable charging on common CCS charging equipment.
However, results can vary depending on:
- charger manufacturer
- charger software
- charging network
- site configuration
- vehicle model and software
- adapter firmware
Charging networks and individual chargers can also receive software updates over time. This is one reason firmware support matters. An adapter that can be updated has a better chance of adapting when compatibility issues arise.
CE marking, explained quickly
For products sold in Norway and the European Economic Area, CE marking is an important baseline requirement.
However, CE marking should not automatically be interpreted as proof that an independent third party has tested every aspect of the product.
It is better to treat CE marking as one part of the overall assessment.
Also look for:
- traceable manufacturer or importer information
- clear technical specifications
- proper operating instructions
- clearly stated voltage and current limits
- warranty and support information
What are the main issues you may encounter when using a CCS to CHAdeMO adapter?
In real-world use, the most common issues are generally related to compatibility.
Compatibility problems
A charging session may:
- fail to start
- stop unexpectedly
- require another attempt
- work at one charger but not another
CCS chargers from different manufacturers can behave differently, and charger software can change. The adapter, car and charging station all need to communicate correctly before and during charging.
A mature firmware platform and good technical support can therefore make a significant difference.
Heat and physical wear
DC fast charging naturally creates some heat in charging connectors.
Repeated use also causes normal mechanical wear to contact surfaces, locking mechanisms and other components.
An adapter designed for DC fast charging is intended to operate under these conditions, but damaged or poorly maintained equipment can create additional risk.
Dirt, moisture, physical damage or badly worn connectors should never be ignored.
User and charging-station issues
Not every problem comes from the adapter itself.
Potential problems can also include:
- damaged charging-station connectors
- forcing a connector that does not fit correctly
- dropping or damaging the adapter
- using equipment with visible cracks
- allowing dirt or moisture into the connectors
- continuing to use equipment that becomes unusually hot
A simple visual inspection before charging can prevent many avoidable problems.
How do you know if a CCS to CHAdeMO adapter is reliable and well made?
A reliable CCS to CHAdeMO adapter should provide clear technical and practical information.
Things worth checking include:
- CE marking
- voltage and current ratings
- weather protection
- robust connectors
- clearly identified manufacturer
- warranty
- firmware support
- evidence of real-world use with different vehicles and charging networks
For an adapter used outdoors in Norway, protection against normal weather exposure is also relevant.
Build quality and connector fit
Physical build quality matters because the adapter is regularly connected to heavy public fast-charging cables.
The connectors should fit securely without excessive force or looseness.
Look for:
- solid construction
- secure locking
- smooth connector operation
- proper sealing
- professional finishing
- no visible damage or poorly fitted components
A charging connector should never need to be forced into place.
Manufacturer, firmware and support
Manufacturer experience is particularly relevant in this product category because many practical compatibility issues can be solved through software.
A mature product should have:
- clearly stated specifications
- documented compatibility
- firmware updates
- a practical update procedure
- customer support if charging problems occur
At Biladapter.no, we sell the Longood CCS to CHAdeMO adapter. Longood was the first CCS to CHAdeMO adapter to reach the market, giving it one of the longest real-world track records in this product category.
Over that time, the adapter has been used extensively with different CHAdeMO vehicles, CCS charger brands and charging networks across Europe. This long history of everyday use has made it a very well-proven and reliable solution, with a large amount of real-world compatibility experience behind it.
The Longood adapter also supports firmware updates, allowing compatibility to continue improving as charging infrastructure changes.
In addition, it is supported by an independent open-source firmware project. This means compatibility development can continue based on real-world experiences with different cars and charging stations, without relying solely on the original manufacturer.
For us, this combination of a long track record, extensive real-world use, updateable firmware and ongoing support is an important reason why we have chosen Longood as the CCS to CHAdeMO adapter we sell.
Which electric vehicles work with CCS to CHAdeMO adapters?
CCS to CHAdeMO adapters are intended for vehicles equipped with CHAdeMO DC fast charging.
The Nissan Leaf is one of the most widely tested applications because of the large number of CHAdeMO-equipped Leafs in use.
Other vehicles commonly used with these adapters include:
- Nissan e-NV200
- Mitsubishi Outlander PHEV
- Lexus UX 300e
- Kia EV
- XPENG G3
Compatibility can depend on the specific model, model year and market version.
Vehicle charging software can also differ between manufacturers and model years. In some cases, software differences can affect how reliably an adapter works with particular chargers.
Before buying an adapter, check compatibility for your exact vehicle.
Biladapter.no provides compatibility information for the Longood adapter, and if your vehicle is not listed, compatibility can be checked before ordering.
Good practices when using a CCS to CHAdeMO adapter
Using a CCS to CHAdeMO adapter does not require treating it as something unusually dangerous. Normal care for high-voltage charging equipment is sufficient.
Before connecting the adapter, inspect it and both connectors for:
- cracks
- bent or damaged contacts
- dirt
- moisture
- other visible damage
If something looks damaged, do not try to use it.
When connecting the adapter, support its weight and make sure the connectors fit correctly. Do not force a plug that does not connect smoothly.
When the adapter is not in use, store it in a dry place and protect the connector surfaces from dirt and damage.
It is also worth keeping the firmware up to date. Firmware updates are not only about adding features. They can improve compatibility and reduce unexpected charging failures when charger software or network behaviour changes.
Bottom line
CCS to CHAdeMO adapters have become a practical way for CHAdeMO drivers to access the much wider CCS fast-charging network. Real-world experience is broadly reassuring, and the issues reported by users relate to compatibility between different cars, chargers and software versions.
A failed charging session or compatibility issue can be inconvenient, but it does not mean that CCS to CHAdeMO adapter technology itself is unsafe.
As with other DC fast-charging equipment, choosing an adapter with clear specifications, confirmed vehicle compatibility, proper instructions, updateable firmware and available support is sensible.
If you have questions about adapter use, compatibility with your specific vehicle or charging problems, Biladapter.no can help.