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Start with the decisionApplications
Vehicle and charging station
EV TestingVehicle, EVCC and charging-release validation.EVSE TestingCharging-station development through field operation.InteroperabilityReal EV and EVSE in one synchronized test record.
Battery and advanced charging
BMS TestingCells, sensors, balancing and controlled faults.BMS + EVCC + OBCValidate the interaction of battery, charging controller and on-board charger.MCS TestingCommunication, signals, cooling and megawatt power.EV Charging EMCKeep charging communication observable under EMC stress.
Production and field
EVSE End-of-LineRepeatable acceptance and unit-level results.Commissioning & Field ServiceCommission, diagnose and verify installed chargers.Calibration & MetrologyTraceable energy verification at the charging point.
Start with the decisionProducts & PlatformsProduct Finder
EVCA
EVCA PlatformCommunication, interoperability, high-power, MCS and EMC paths.EVCA ComOnlyFocused charging communication testing.EVCA Multi MobilePortable laboratory and field analysis.EVCA InteropAnalyse interoperability between a real EV and EVSE.EVCA FlexModular high-power testing and controlled faults.EVCA MCSMegawatt charging communication, low-level signals and system testing.
Easy Chester
Easy Chester PlatformEVSE production, commissioning, service and calibration.Easy Chester MicroAC EVSE installation testerEasy Chester UltimateAC and DC EVSE installation testerEasy Chester CalimeraAC and DC EVSE calibration systemEasy Chester EOL / EOL HPCEVSE end-of-line production tester
Battery, software and EMC
Battery Cell SimulatorBMS testing from compact bench to high-voltage HiL.comframeConfiguration, synchronized analysis and automation.EMC LinkOptical charging communication through the chamber boundary.
Start with the decisionSoftware Capabilities
Understand and challenge
Automated Standards AnalysisMeasured behaviour, normative context and highlighted deviations.Professional SimulationConfigure nominal, boundary and non-conform behaviour.Manipulating GatewayTest a live correction hypothesis between real partners.
Reproduce and automate
Charge PlaybackReproduce the charging partner for the DUT.Charge Cycle AutomationTurn saved configurations into repeatable campaigns.Conformance Test LibrariesVersioned executable standards-based test logic.
Software and integration
Capabilities HubConnect the capability model across EV, EVSE and BMS testing.EVCA Capability HubExplore the detailed EV charging capability stack.comframeThe shared test-intelligence environment.Integration & APIsREST, Python, CI/CD and laboratory orchestration.Protocol & Domain ModulesSelect released domain depth.
Start with the decisionStandards & Knowledge
Standards and test logic
Charging, Safety & EMCCharging behaviour, field safety, editions and test boundaries.Conformance Test LibrariesReleased executable test logic, verdicts and evidence.AFIR for EV ChargingRegulation, responsibility and verifiable evidence.
Methods and terminology
Knowledge CenterTechnical explanations, methods and application guidance.GlossaryStable charging and BMS test terminology.EVSE Calibration MethodsCompare controlled real load and reference measurement.Battery Cell SimulationCells, balancing, faults, precision and BMS HiL.
Documents and tools
Resources LibraryCurrent brochures, webinars, guides and checklists.Charger Uptime CalculatorEstimate downtime and field-service impact.EVSE Inspection GuidePractical commissioning and inspection workflow.BMS testing whitepaperTemperature, environment, simulation and test wiring.Technical newsletterChoose product updates and events relevant to your tests.
Start with the decisionCompany
Company
About comemsoEngineering purpose, history and operating companies.Development & manufacturingShort paths from development to system testingQuality & CertificationsManagement systems, validation and calibration evidence.Customer ProofNamed stories, endorsements and published configurations.SustainabilityEnvironmental management and measured progress.
People and network
Customer Care TeamDelivery, commissioning, training and support.Sales PartnersRegional commercial and service access.CareersWork on deep e-mobility testing.
Updates and contact
News & EventsProjects, releases, webinars and company updates.Request a technical demoDiscuss your test task with the comemso team.ContactSales, support and locations in one place.Legal documentsImprint, privacy, GTC, EULA and WEEE.

Test electric mobility.
Advance your development.

Measurement, simulation and test systems for EVs, EVSE and BMS. Validate charging behaviour, reproduce boundary conditions and test charging points under controlled conditions.EVCA and comframe automate standards analysis for e-mobility testing.

Find your test solution Discuss your test task
Made in Germany
comemso measurement and test systems, including test racks, mobile testers and comframe
Made in Germany
Since 2010BMS test technology.
Charging test technology since 2011. CharIN CCTSValidated Basic and
Extended DC EVSE test profiles. Developed in-houseHardware, software
and manufacturing at comemso.

Your test objective.

Choose the test scope for your next development step, in the lab or at the charging point.

An electric vehicle connected to an EVCA test system: an engineer investigates charging behaviour in the lab
Vehicle under test · Simulated charging station

EV tester · Vehicles and charging controllers

Simulate the charging station.
Test the vehicle.

Set the charging station behaviour with an EVSE simulator. Test vehicle charging communication and responses, varying timing and supported fault scenarios deliberately.

Explore EV testing
Employees working with a Battery Cell Simulator and its software

BMS tester · Battery Cell Simulator

Simulate the cells.
Validate your BMS.

Use battery cell simulation for BMS validation. Define cell and sensor states to test balancing and reproduce supported faults and boundary conditions without real battery cells.

Explore BMS testing Battery Cell Simulator ↗
Growing with the test requirements

From 24 cells to two systems with 132 cell channels each. A BESS project expands its BMS testing capacity. Customer project ↗

BMS whitepaper · English ↗
Current Easy Chester Ultimate Generation 3 in its open case, with touchscreen and charging interfaces
Easy Chester Ultimate · Generation 3
Original Ultimate interface: EV Safety and RCD selected, measurement fields n/a, progress 0 percent

Guided test selection.Original interface before the test starts.

Commissioning · AC/DC installation tester

Commission charging stations.
Test electrical safety.

Easy Chester Ultimate is the AC/DC installation tester for commissioning, periodic inspection and service. Test and document electrical protective measures on the grid and EV sides, along with charging function, in a guided workflow.

Request a 15-minute demo Discover Ultimate ↗
EVSE checklist · English ↗

Further development of the Mini-Charger-Tester. Functions and safety measurements depend on the configuration and equipment.

EVCA and comframe · Automated standards analysis

Understand the measurement.
Choose your next test.

Analysis principleDC CCS
CommunicationPLC messages and timing
Signal statesCP and PP
Electrical valuesDC voltage and current
Configured requirementsStandard edition · Message · Charging phase
Automatically flagged deviationReview the measured event alongside the expected behaviour
Concept diagram for DC CCS, not an actual measurement.
Original comframe interface with communication data and electrical measurement traces
Original comframe view

Use EVCA and comframe for automated charging analysis against configured standard requirements. The software flags supported deviations so your team can investigate the cause and plan a targeted follow-up test.

Request a technical demo Explore the analysis

Precharge

How an EVSE team validated its precharge correction.

An EVCA recording reviewed by a specialist in comframe gave the customer’s engineers a clear basis for adjusting the EVSE control parameters. A repeat test confirmed the correction for the investigated charging pair.

Follow the diagnostic steps

Control the next test. Use Professional Simulation to vary timing, parameters and supported fault scenarios deliberately.

Explore simulation Explore SECC TestLibs

Standard editions, measurement channels, analysis functions and ISO 15118-4/-5 SECC test cases depend on the system, software version and licence. Review ISO 15118 and IEC 61851-23 test scope. Standards analysis does not replace formal conformance testing.

EVCA Charge Playback · From the field to the lab

Record real charging behaviour.
Build your next lab test.

Schematic illustration. Not a product interface.
  1. 01

    Record the real charging pair

    Capture communication, timing and available measurements.

  2. 02

    Use the partner behaviour

    Determine the usable scope for EV or EVSE simulation.

  3. 03

    Test the device again

    Repeat supported behaviour in the lab.

Use recorded partner behaviour to repeat supported charging sequences in the lab, even without the original charging partner.

Discover Charge Playback

EVCA playback depends on the system and software. comframe already supports import and analysis. Active playback in comframe is separate and has not yet been released.

comframe

Develop your software.
Keep test conditions defined.

Build follow-up tests on an approved test configuration. Re-evaluate recordings and integrate workflows through suitable interfaces. Together we align extensions with your existing system.

Explore integration and extensions For supported EVCA and Calimera configurations; optional control of supported BCS systems.

Specialised test technology

More testing and
calibration solutions.

Develop MCS, test production units, service AC charging points or investigate EMC.

EVCA MCS test rack with an MCS charging cable

MCS · Megawatt Charging

EVCA MCS

Test communication, signals and interoperability as you develop your megawatt charging system.

Explore MCS testing
Easy Chester EOL and EOL HPC for production testing of charging stations

Production · End-of-Line

Easy Chester EOL / EOL HPC

Integrate repeatable tests into manufacturing and associate results with the tested units.

Explore production testing
Easy Chester Micro in its open transport case

AC installation tester NEW

Easy Chester Micro

Equip your field team for commissioning and periodic inspection of AC charging stations, with electrical safety and charging function tests in a compact system.

Discover Micro
EMC Link in an EMC chamber setup

EMC · Vehicle and charging station

EMC Link

Test charging communication under EMC exposure, using optical transmission across the chamber boundary.

Explore EMC testing

Match the test system to your device under test, interfaces and required test depth.

Go to the product finder
Two comemso employees developing and testing an open electronic test system

The people behind your test technology

Your test setup.
Supported from the start.

Build your test setup with comemso hardware, software and application expertise. Work with our team from system selection, commissioning and training through to support, calibration and maintenance.

CommissioningTrainingSupportCalibration & maintenance
Meet Customer Care Explore development and manufacturing ↗

Knowledge and tools

Whitepaper, checklist
and calculator.

Concept diagram: the Battery Cell Simulator provides virtual cell states for BMS testing
Whitepaper · BMS · English

Prepare your BMS tests.

Use guidance on temperature, simulation and wiring to plan your test setup.

Get the whitepaper
Preview of the English EVSE checklist
Checklist · EVSE · English

Test charging points systematically.

Prepare commissioning and field testing with a structured EVSE checklist.

Get the checklist
Calculator · Operations · English

Plan with your own figures.

Estimate the financial impact of downtime and service visits using your own assumptions.

Open the Uptime Calculator

Plan
your next test.

Discuss your test task

Tell us about your device under test, interfaces and test objectives. Together we define the next step towards a suitable test setup.

Original view