Method and apparatus for electrical contacting of cells of a battery

A method for electrical contacting of cylindrical cells of a battery, comprising the following steps:

• using a laser beam having a first beam energy to remove contamination in at least one region, provided for electrical contacting, of an electrically conductive outer surface of a first cell of the battery;
• using a laser beam having a second beam energy, which is higher than the first beam energy, to generate at least one marking in the outer surface of the first cell, the marking (i) having a predefined spatial relationship to the region provided for electrical contacting and (ii) used to identify the region provided for electrical contacting;
• and
• electrically contacting the first cell using a connecting apparatus, the marking being used by the connecting apparatus to localize the region of the first cell which is provided for electrical contacting to connect the region using an electrically conductive connecting element in the form of a metal wire and/or a metal ribbon to a region, provided for electrical contacting, of a second cell of the battery,
• wherein the marking includes a first marking provided in a surface of a positive pole and a second marking provided in a surface of a negative pole.