Device for identifying operating data of a motor-driven tool , wherein the device is configured for arrangement on the tool , the device comprising: - an identifying and/or evaluating device , wherein the identifying and/or evaluating device is configured to identify at least one parameter, wherein the parameter is a function of an operating state of the tool , and to evaluate the identified parameter for obtaining the operating data and/or to identify operating data, - an operating data memory unit , wherein the operating data memory unit is configured to store the obtained and/or identified operating data, - a communication interface , wherein the communication interface is configured to transfer the stored operating data to a terminal in a wire-less manner, and - a housing , - wherein the housing is configured to accommodate an electrical energy storage device for electrical energy supply of the identifying and/or evaluating device , the operating data memory unit , and/or the communication interface , - wherein the housing has an open condition and a closed condition, - wherein, in the open condition of the housing , the electrical energy storage device is insertable into the housing or removable from the housing along an insertion and removal direction (z), - wherein the device has at least one elastic element , and - wherein the at least one elastic element is configured, in the closed condition of the housing , to fix the accommodated electrical energy storage device by applying pressure of a force (F) along the insertion and removal direction (z), wherein the force (F) amounts to a value of the mass (m) of the electrical energy storage device multiplied by at minimum 1 N per g. - an identifying and/or evaluating device , wherein the identifying and/or evaluating device is configured to identify at least one parameter, wherein the parameter is a function of an operating state of the tool , and to evaluate the identified parameter for obtaining the operating data and/or to identify operating data, - an operating data memory unit , wherein the operating data memory unit is configured to store the obtained and/or identified operating data, - a communication interface , wherein the communication interface is configured to transfer the stored operating data to a terminal in a wire-less manner, and - a housing , - wherein the housing is configured to accommodate an electrical energy storage device for electrical energy supply of the identifying and/or evaluating device , the operating data memory unit , and/or the communication interface , - wherein the housing has an open condition and a closed condition, - wherein, in the open condition of the housing , the electrical energy storage device is insertable into the housing or removable from the housing along an insertion and removal direction (z), - wherein the device has at least one elastic element , and - wherein the at least one elastic element is configured, in the closed condition of the housing , to fix the accommodated electrical energy storage device by applying pressure of a force (F) along the insertion and removal direction (z), wherein the force (F) amounts to a value of the mass (m) of the electrical energy storage device multiplied by at minimum 1 N per g. <EOS>