Apparatus and method for producing a single cell for a battery

The invention relates to an apparatus for producing a single cell (8) for a battery, wherein each single cell (8) from an electrode stack (4) is formed, the individual electrodes of different polarity, preferably the electrode foils, by a separator, preferably a separator, mutually electrically are insulating separately, electrodes of the same polarity of an electrically conductive manner to a pole (6) are connected with the poles (6) of the electrode stack (4) are each electrically connected to an electrically conductive housing side wall (3) by means of an ultrasonic welding apparatus which (at least a sonotrode 2) and an anvil comprises connectable. According to the invention, the anvil as a molded die (1) is formed. The invention further relates to a method for producing a single cell (8) for a battery.