1. Dosing device with electromechanical interface. 2.1 A dosing device is known with an electrically driven delivery means for at least one medium, a medium reservoir for storing the medium and an applicator for dispensing the medium, and with a control unit for acting on the delivery means and an electrical energy store for powering the control unit and/or the delivery means. 2.2 According to the invention, the delivery means, medium reservoir and applicator, on the one hand, and the control unit and electrical energy store, on the other, are accommodated respectively in separate structural units, and guide means are provided for fitting the structural units one into the other, said guide means having an electromechanical interface for coupling and/or uncoupling relative to the control unit and/or energy store without using tools. 2.3 Use for dispensing of medium.