What is CHAdeMO?

Definition

CHAdeMO is a DC fast-charging protocol developed in Japan and one of the earliest global standards for rapid charging. It provides direct current power to the vehicle’s battery through a dedicated connector. Although newer vehicles increasingly use CCS, CHAdeMO remains important for legacy EVs, particularly those produced by Japanese manufacturers.

Why CHAdeMO Matters

CHAdeMO played a pioneering role in EV adoption by offering faster charging than AC systems. Even as the industry shifts to CCS, thousands of CHAdeMO-equipped vehicles are still in use worldwide. Maintaining CHAdeMO support ensures inclusivity and prevents stranding these users.

How it Works

CHAdeMO operates with a dedicated plug and its own communication protocol. The system establishes safety checks, negotiates power delivery, and manages charging speed according to the vehicle’s battery condition. Early versions supported around 50 kW, while newer versions can exceed 400 kW.

Key Technologies / Features

The CHAdeMO system is characterized by its large, robust connector and independent communication standard. It also supports optional vehicle-to-grid (V2G) applications, enabling EVs to feed power back into the grid.

Applications

• Public charging stations offering both CHAdeMO and CCS.

• Japanese EVs such as the Nissan Leaf and Mitsubishi Outlander.

• Legacy fleet vehicles still reliant on CHAdeMO infrastructure.

• Dealer service centers maintaining compatibility for older models.

Benefits

CHAdeMO has enabled EV adoption across multiple markets and continues to serve drivers with older EVs. It ensures accessibility while new vehicles transition to CCS or other global standards.

Use Cases

Tourist regions with imported Japanese EVs still rely on CHAdeMO. Some cities maintain CHAdeMO-equipped taxis or delivery fleets. Transition stations often retain CHAdeMO plugs alongside CCS ports to ensure service continuity.