Both vehicle inter-operability measurements in the field and standard- conformity tests in the laboratory can be executed with the Comemso EVCA Multi Mobile. The portable device covers all standards for AC, DC-CCS type 1 + 2, CHAdeMO and DC China (GB/T). No modification is necessary to set the desired charging standards, this is done using the built-in side-flaps. Communication and charging progress can be automatically checked for standard-conformity and all details are logged. The system also enables the use of complete test libraries for standard-conformity testing. All results are stored on a connected PC, where they can be viewed in real-time or post-processed. Additional functions are available particularly for the inter-operability measurements between electric vehicle and the charging station, for example the non-interfering monitoring of the protocol between the EV and the EVSE, reading the protocol espite encryption or changing protocol notifications.