Administering device for infusing or injecting a product, comprising a housing (1, 2) with a receiver (3) for the product, a compartment (7) for a power source in order to supply the conveying mechanism (4) with electrical energy, a first contact spring (15) which is disposed in the compartment and places a terminal of the power source in an electrically conducting contact by means of a spring force when the power source is disposed in the compartment (7), and a second contact spring (16) for establishing an electrically conducting contact for an opposite terminal of the power source, likewise by means of spring force.