A method for checking the measurement accuracy of a charging connection device for electric vehicles (V), the charging connection device comprising - an input interface for feeding electrical energy from a stationary power supply network (M) into the charging connection device , - a charging interface for the controlled delivery of electrical energy to an electric vehicle (V), - a power switching element for the controlled transfer of electrical energy to the charging interface , - at least one control device for monitoring and controlling functional sequences of at least the charging connection device , and - an energy measuring device , which energy measuring device is provided for measuring and counting the amount of electrical energy drawn during charging processes of electric vehicles, the control method comprising the steps of: - connecting the input interface and the charging interface to a calibration control device , which calibration control device comprises at least one voltage source and at least one current source , - switching the charging connection device by an operator to an energy metering test mode (CM) by a deliberate action, which switching to the energy metering test mode (CM) comprises at least the following steps: -- transferring a vehicle communication device or a communication routine of the charging connection device with respect to an electric vehicle (V) to a communication inactive state, for example starting from a communication standby state, -- deactivating personal safety functions of the charging connection device , -- closing or keeping closed the power switching element , - carrying out the check of the measurement accuracy of the charging connection device by means of the connected calibration control device . - an input interface for feeding electrical energy from a stationary power supply network (M) into the charging connection device , - a charging interface for the controlled delivery of electrical energy to an electric vehicle (V), - a power switching element for the controlled transfer of electrical energy to the charging interface , - at least one control device for monitoring and controlling functional sequences of at least the charging connection device , and - an energy measuring device , which energy measuring device is provided for measuring and counting the amount of electrical energy drawn during charging processes of electric vehicles, - connecting the input interface and the charging interface to a calibration control device , which calibration control device comprises at least one voltage source and at least one current source , - switching the charging connection device by an operator to an energy metering test mode (CM) by a deliberate action, which switching to the energy metering test mode (CM) comprises at least the following steps: -- transferring a vehicle communication device or a communication routine of the charging connection device with respect to an electric vehicle (V) to a communication inactive state, for example starting from a communication standby state, -- deactivating personal safety functions of the charging connection device , -- closing or keeping closed the power switching element , -- transferring a vehicle communication device or a communication routine of the charging connection device with respect to an electric vehicle (V) to a communication inactive state, for example starting from a communication standby state, -- deactivating personal safety functions of the charging connection device , -- closing or keeping closed the power switching element , - carrying out the check of the measurement accuracy of the charging connection device by means of the connected calibration control device . <EOS>