The Easy Chester is a mobile functional test device for AC and DC charging stations that fully simulates the communication of an electric vehicle – without the need for a real vehicle. It supports all relevant communication protocols: DIN 70121, ISO 15118, IEC 61851-1 for CCS and NACS charging standards as well as CHAdeMO up to and including version 2.0.

Typical application scenarios range from initial commissioning and recurring tests as part of quality assurance to maintenance, troubleshooting and technical support or the repair of charging stations. With the Easy Chester, the function, communication and safety behavior of a charging station can be tested easily and safely – wherever it matters.

With the new Easy Chester Gen. 2, comemso now presents a more powerful, even more flexible system with numerous extensions:

• A revised, more intuitive user interface ensures even easier operation.
• In addition to 400 V systems, 800 V charging systems can now also be tested – a crucial step for testing modern high-power chargers.
• The Pro version allows DC load simulation with up to 60 kW.
• Proven features are retained: extensive long-term tests and targeted fault simulations – e.g. communication faults or insulation faults (AC/DC).
• With the optional comISO module (available from Q4/2025), additional VDE-compliant tests can also be carried out.

Three equipment variants – Basic, Extended and Pro – and a modular hardware architecture with interchangeable electronic cassettes enable flexible adaptation to a wide range of requirements. Thanks to software upgrades, functions can be specifically expanded. Intelligent features such as automatic detection of the connected plug type and connected DC loads as well as the new, improved PDF report function complete the system.

The official sales launch of Easy Chester Gen. 2 begins today.

With this further development, comemso is consistently continuing its course of innovation – and remains true to its own claim: First on the market. First on innovation.