Simplify EVSE Testing and Maintenance with Easy Chester –
The Next-Gen EV Charger Tester for CCS and CHAdeMO

ccs evse tester

Why Easy EVSE Testing matters

The rapid expansion of Electric Vehicle Supply Equipment (EVSE) infrastructure brings new challenges to the forefront:

  • Can you ensure charging stations are reliable, safe, and Eichrecht-compliant?
  • Do you need a test equipment that is accessible for non-engineers, service technicians, and calibration specialists?
  • Are you ready to optimize your EVSE testing without requiring multiple vehicles or complex systems?

The comemso Easy Chester is a game-changer in EVSE testing, an installation tester for electric vehicle chargers with unparalleled simplicity, accuracy, and versatility for technicians in the field, production lines, and laboratories.

What sets Easy Chester apart as CCS EVSE Tester

Imagine a charger tester that:

  • Performs comprehensive testing of fast chargers with small EV battery simulation – far more than just a simple test adapter or EVSE adapter.
  • Simulates CP signals (Control Pilot) /PP state (Proximity Pilot) and PLC for CCS, CHAdeMO, NACS, and AC charging interfaces.
  • Allows to operate the Test System intuitively with a touchscreen interface – no additional computers required.
  • Provides real-time charging process and electrical safety test results with customizable, branded reports for your business.
  • Adapts to diverse applications, from field service to high-power calibration and production.

With Easy Chester, previously known as the Mini-Charger-Tester, all these features are at your fingertips.
The comemso DC-CCS EVSE testing equipment for on-site installation testing is the first and best-selling system on the market.

Unlock Game-Changing Features for Reliable EVSE Testing

1. Comprehensive EV Simulation and Testing

  • Supports CCS (Combined Charging System), CHAdeMO, NACS (North America Charging Standard), and optional AC testing.
  • Simulates two vehicles simultaneously, eliminating the need for physical cars during charging sessions.
  • Fully compliant with ISO 15118, DIN 70121, and additional global standards for EVSE testing.

2. Versatile Testing for All Scenarios

Choose from four distinct models tailored to your needs:

  • Easy Chester Mobile: Portable and rugged for on-site EVSE maintenance.
  • Easy Chester EOL: Perfect for field or production line testing with extended operation capabilities.
  • Easy Chester EOL HPC: Supports high-power applications up to 500 kW for production environments.
  • Easy Chester Calimera: A precision tool for Eichrecht calibration and compliance testing in the lab or field. Ensures accuracy with cross measurements up to 500 A and compliance with ISO 17025 for calibration.

3. Intuitive Design for Easy Operation

  • Lightweight with wheels and handles for field use.
  • Large memory for saving test data, accessible anytime for reporting or audits.
  • Touchscreen simplicity: Connect, test, and analyze results in minutes.
  • Remote control for integration int production line with full automation.

4. Proven Accuracy and Compliance

  • Performs key safety tests, including leakage current, CP short circuits, and isolation monitoring.
  • Integrated with advanced power analyzers for detailed insights for Calibration / Eichrecht applications, usable for Easy Chester Calimera and Easy Chester EOL HPC.
evse test with synfis

Charging station test with logged reports and automatable if required. For DC-CCS, CHAdeMO & AC.

You need help to specify your Easy Charger Tester?

Our experts are here to help. Contact us to explore a free live demo of our products…

Innovations that make EVSE Testing smarter and simpler.

easy-chester-innovation-award

Real-World Applications of Easy Chester

Simplify and Standardize

  • Field Service: Test charging stations post-installation, during routine maintenance, or after repairs.
  • Production Lines: Integrate seamlessly for automated end-of-line testing.
  • Calibration and Compliance: Meet Eichrecht and ISO 17025 standards for billing accuracy.

Reliable and Reproducible

  • Perform EV simulation and charging station validation to ensure robust interoperability.

High-Power Testing: Future-Proof Your Operations

  • Evaluate DC-CCS, CHAdeMO, NACS and high-power charging systems up to 1000 V and 500 A with Easy Chester EOL HPC and Easy Chester Calimera.
ev charger tester

Easy Chester

for the Field

If you search for a device that is made for transportability and use on-site, the Easy Chester is the natural choice. The device simulates vehicle signals of the charging standards DC-CCS, NACS and/or CHAdeMO, so it represents virtually up to two vehicles in an ultraportable suitcase. This small power package is perfectly suited for maintenance, testing after commissioning / installation and shows you the test results (passed/failed) clearly on its touch display. Furthermore there are features like failure injection, set charging time, etc. The device is generally operated via the touch display. With the associated PC software, all test results can be transferred to your PC as a PDF.

  • Up to two “vehicles” in an ultra-portable, easy-to-use case
  • Test results are displayed in real time on the touchscreen and additionally stored in the device
  • Integrated emulated vehicle load circuit with 300V battery voltage and 6A charging current (fixed setting)
  • Made for field use: the Easy Chester can be powered by an 1 kW sine wave inverter (optional, not included) connected to the 12V cigarette lighter.
charging test eol

Easy Chester EOL

for End-of-Line-Test

In case your focus is on End-Of-Line (EOL) testing in production you should opt for this tabletop version: it‘s designed to be operated with an End-of-Line test bench to find out if the EVSE is working as expected. Of course the tabletop can as well be used in field just like the suitcase version, yet with the Mini EoL you combine most advantages of the suitcase with additional features like continuous EoL-testing for up to 8 hours per day under laboratory conditions, adjustable charging time from a few seconds to max. 60 minutes as well as automated charging tests.

  • Designed to be operated with an End-of-Line test bench
  • Made for continuous operation (up to 8 hours) under laboratory conditions
  • Integrated emulated vehicle load circuit with 300V battery voltage and 7A charging current (fixed setting), optimal cooling for continuous operation
  • Tabletop version, yet still a viable option for field use as well
  • Adjustable charging time from a few seconds to max. 60 minutes
  • Automated charging tests, remotely controllable via SCPI commands (UART/RS232 interface)
ccs tester

Easy Chester EOL HPC

for End-of-Line-Test with High-Power-Charging

Your demands are even higher? If your focus is on End-Of-Line (EOL) testing with high power charging, the Easy Chester EOL HPC can still be installed in a single, rollable rack for loads of up to 120 kW. If you need even a higher DC battery emulation for testing the maximum performance of your EVSE you can extend your system using battery emulators to reach DC-loads of up to 500kW 1000V/500A. Please talk with our sales team to select the fitting battery emulation / bi-directional power supply. Like the tabletop version, this rack version is also designed for continuous operation of up to 8 hours per day under laboratory conditions.

  • Designed to be operated with an End-of-Line test bench
  • Supports high power charging, up to 120 kW in one 38 HU Rack, emulated EV load circuit adjustable in the range of 250V – 350V battery voltage and 5A – 250A charging current
  • By using separate battery emulators you can even reach DC-loads of up to 500kW (1000V/500A). But no 500kW mains power is necessary, since the power is regeneratively shifted in a circle – see the block diagram below for an explanation.
  • Designed for continuous operation (up to 8 hours) under laboratory conditions
  • Adjustable charging time from a few seconds to infinite
  • Automated charging tests, remotely controllable via SCPI commands (UART/RS232 interface)
icon-2-ev

SIMULATION OF TWO DIFFERENT EVs
CCS OR CHAdeMO

icon-automatic-ev-sim

AUTOMATIC EV SIMULATION
FOR COMMUNICATION & DC LOAD CIRCUIT

icon-reatime-results

REAL TIME RESULTS
SAVED IN THE DEVICE

icon-safety-tests

SAFETY TESTS FOR
PE BREAK, CP SHORT CIRCUIT, LEAKAGE CURRENT

icon-touch

TOUCH INTERFACE
NO COMPUTER REQUIRED

icon-portable

PORTABILITY
WITH WHEELS & CARRYING HANDLE

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Why Choose Comemso’s Easy Chester?

1. Trusted by Industry Leaders

  • Used worldwide for its ease of use, accuracy and adaptability.
  • Recognized with innovation awards for its cutting-edge technology.
  • Referenced in different e-mobility books for charge-point operation and EVSE maintenance guidance

2. Scalable, Modular Design

  • Upgrade easily with modular card systems, reducing downtime for repair and upgrades.
  • Extend capabilities with additional modules for evolving standards and requirements.

3. Complete Customer Support

  • Accessible training materials and online support ensure you are always equipped to succeed.
  • Customizable options to suit specific operational needs.

Trusted Charging Tester for EVSE manufacturers, Charge Point Operators and Certification Labs.

Our customers include leading EVSE manufacturers, charge point operators and service providers, certification bodies, calibration authorities, research institutions and universities.

easy chester customer logos

Hear It from Our Clients

As a product-independent full-service provider for sustainable charging systems, comemso not only convinced us because of their market establishment, but above all because of the manufacturer-independent application options. In this way, we can guarantee our customers quick service calls and feedback on the reliable functioning of their charging points.”

Logo Synfis

“We´ve been using the comemso Mini-Charger-Tester to test our hyper-fast charging, and we´re impressed by the ease of use, stability and precision of the compact solution.”

Logo Clever

“Comemso offers innovative solutions to the industry, offering support and a quality product. Highly recommended!!”

Logo SGS

“Fantastic piece of testing kit.”

Logo Joju Solar

Start Electric Vehicle Supply Equipment Testing Smarter Today

Experience the Easy Chester difference in EVSE testing and electric vehicle simulation. Here’s how to begin:

  1. Schedule a Demo: See Easy Chester in action and explore its full potential.
  2. Get a Custom Solution: Share your requirements, and we’ll configure the perfect setup.
  3. Join Industry Leaders: Transform your testing processes and lead the way in e-mobility.

Contact us today to simplify your EV charger testing and ensure the safety and reliability of your charging stations.

icon-contact-us

Contact us today to experience effortless EVSE testing like never before.

Contact us today to experience effortless EVSE testing like never before.

More information – product highlights

Easy Chester – briefly explained.

Automatic EVSE testing after installation/ maintenance.
comemso Mini-Charger-Tester. DC-CCS, CHAdeMO

Synfis relies on comemso Mini-Charger-Tester

How to order

icon-contact-us

Are you interested in an Easy Chester? We will create a suitable offer for you.

Contact us

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Interested in our solutions? Reach out to us—we’re here to assist you.

Book recommendations

book-vde

Elektroinstallation und Ladeinfrastruktur der Elektromobilität.
(comemso is referenced on page 350)

VDE-Verlag
ISBN 978-3-8007-6079-4

book-elektromobility

Elektromobilität. Theorie und Praxis zur Ladeinfrastruktur.
(comemso is referenced on page 232)

Hüthig-Verlag
ISBN 978-3-8101-0508-0

How to order

Are you interested in an Easy Chester? We will create a suitable offer for you.

Contact us

Are you interested in our solutions? Send us a message. We are happy to help.

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