Develops and manufactures test and measurement systems for electric vehicles, charging stations (EVSE) and battery management systems.
comemso electronics GmbH
Ostfildern (DE) · Farmington Hills, MI (USA)New on Amplifa
About comemso
comemso electronics GmbH develops and manufactures test and measurement systems for e-mobility: charging station testers (EVSE), EV test systems for vehicle, EVCC and charging authorization as well as Battery Cell Simulators for BMS testing from laboratory setup to high-voltage HiL. The portfolio includes the EVCA platform (communication, interoperability, high power up to 350 kW, Megawatt Charging System and EMC) as well as the Easy Chester series for production, commissioning, service and calibration, including the PTB-certified AC/DC EVSE calibration system Easy Chester Calimera. The comframe test software offers configuration, synchronized analysis, automation as well as REST, Python and CI/CD integration. The company supports customers throughout the entire lifecycle: development, end-of-line testing, commissioning, on-site service, calibration in accordance with Legal Metrology as well as training and factory service. Customers come from e-mobility, charging infrastructure, vehicle development, battery/BMS development and certification laboratories. Since its founding in 2009, comemso has been investor-free, owner-owned and owner-managed; development, manufacturing and test laboratories are located in Ostfildern near Stuttgart.
- Site
- Ostfildern
- Processes
- EV testing (validation of vehicle, EVCC and charging authorization), EVSE testing (charging station testing from development to field operation), Interoperability analysis (real EV and EVSE in a synchronized test recording), BMS testing (cells, sensors, balancing, controlled faults), BMS + EVCC + OBC integration testing, MCS testing (Megawatt Charging System: communication, signals, cooling), EV charging EMC testing (charging communication under EMC load), EVSE end-of-line testing
- Materials
- EVCA Test System Platform, EVCA Flex, EVCA MCS, Easy Chester Product Family, Battery Cell Simulator, comframe Test Software
- Certificates
- ISO 9001, ISO 14001
- Founded
- 2009
- Industries
- E-mobility / electric mobility, Charging infrastructure (EVSE), Automotive / vehicle development, Battery/BMS development, Certification and testing laboratories
- 01
Engineering and system design
- 02
Hardware and software development (comframe)
- 03
Manufacturing and integration of the test systems
- 04
In-house test laboratory and validation
- 05
Sales via direct sales and sales partners
- 06
Commissioning, on-site service, calibration and factory service
Systems and Platforms
EVCA Test System Platform
Test system for charging communication, interoperability, high power up to the 350 kW class, MCS and EMC.
EVCA Flex
Modular high-power test system with controlled fault injection for AC and DC EVSE, suitable for certification laboratories.
EVCA MCS
Test system for Megawatt Charging System: communication, low-level signals and system testing.
Easy Chester Product Family
AC and DC charging station testers for wallboxes, end-of-line testing, commissioning, service and calibration.
Battery Cell Simulator
Cell and sensor emulation for BMS HiL from compact laboratory setup to the high-voltage range.
comframe Test Software
Platform for configuration, synchronized analysis and automation with REST, Python and CI/CD interfaces.
Locations
Ostfildern
DEHeadquarters, development, manufacturing and test laboratories
- EVCA Flex
- EVCA ComOnly
- EVCA Multi Mobile
- EVCA Interop
- EVCA MCS
- Easy Chester Micro
- Easy Chester Ultimate
- Easy Chester Calimera
- Easy Chester EOL / EOL HPC
- Battery Cell Simulator
- SmartCal
- comframe
- EMC Link
Farmington Hills
UScomemso North America Corporation, North America office (USA and Canada)
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| EV testing (validation of vehicle, EVCC and charging authorization)Testing | – | – | – | – | – |
| EVSE testing (charging station testing from development to field operation)Testing | – | – | – | – | – |
| Interoperability analysis (real EV and EVSE in a synchronized test recording)Testing | – | – | – | – | – |
| BMS testing (cells, sensors, balancing, controlled faults)Testing | – | – | – | – | – |
| BMS + EVCC + OBC integration testingTesting | – | – | – | – | – |
| MCS testing (Megawatt Charging System: communication, signals, cooling)Testing | – | – | – | – | – |
| EV charging EMC testing (charging communication under EMC load)Testing | – | – | – | – | – |
| EVSE end-of-line testingTesting | – | – | – | – | – |
| Commissioning & on-site service of charging stations (AC, DC, CCS, CHAdeMO, NACS)Testing | – | – | – | – | – |
| Calibration and metrology (traceable energy testing at the charging point)Testing | – | – | – | – | – |
| Conformity testing with standard-based test libraries (including CharIN CCTS, SAE J3400/NACS, AFIR,Testing | – | – | – | – | – |
| Battery cell simulation (cell and sensor emulation for BMS HiL)Testing | – | – | – | – | – |
| Fault injection / targeted faults and edge-case simulationTesting | – | – | – | – | – |
| Automated test cycles and test automation (Charge Playback, Charge Cycle Automation)Testing | – | – | – | – | – |
| Development and manufacturing of e-mobility test systems (hardware, software, system design)Engineering | – | – | – | – | – |
13 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| EV charging analyzer / charging station tester (high power, modular, 350 kW class, controlled | comemso EVCA Flex | – | – | – | Ostfildern, DE |
| Charging communication test system | comemso EVCA ComOnly | – | – | – | – |
| Mobile laboratory and field analyzer | comemso EVCA Multi Mobile | – | – | – | – |
| Interoperability test system (EV and EVSE in one test recording) | comemso EVCA Interop | – | – | – | – |
| Megawatt charging test system (MCS: communication, low-level signals, system testing) | comemso EVCA MCS | – | – | – | – |
| AC EV charging station tester for wallboxes | comemso Easy Chester Micro | – | – | – | – |
| AC/DC EV charging station tester | comemso Easy Chester Ultimate | – | – | – | – |
| AC and DC EVSE calibration system (PTB-certified) | comemso Easy Chester Calimera | – | – | – | – |
| EVSE end-of-line production test unit | comemso Easy Chester EOL / EOL HPC | – | – | – | – |
| Battery Cell Simulator / BMS HiL (laboratory setup to high voltage) | comemso Battery Cell Simulator | – | – | – | – |
| Automated calibrator for Battery Cell Simulator | comemso SmartCal | – | – | – | – |
| EMC test system: optical signal extension across the chamber boundary | comemso EMC Link | – | – | – | – |
| Test software platform (configuration, synchronized analysis, automation) | comemso comframe | – | – | – | – |
Additional services
Reference customers
Quality and Certification
comemso is certified to ISO 9001 and ISO 14001 by DEKRA Certification GmbH. The company operates its own test laboratories in Ostfildern and offers traceable calibration with PTB-certified systems.
| Evidence | Ostfildern |
|---|---|
| ISO 9001 | |
| ISO 14001 |
History
- 2009
Founded; investor-free, owner-owned and owner-managed ever since
- 2019
Innovation Award of the District of Esslingen
- 2024
Introduction of the EVCA Flex for AC EVSE testing (System of the Month April 2024)
- 2025
EVCA Flex in the 350 kW class for certification laboratories (System of the Month July 2025); CharIN CCTS validated (Basic and Extended DC EVSE test profiles); PTB-certified mobile AC/DC charging calibration with Easy Chester Calimera