A film structure for a battery for providing on a round body includes a carrier film, having a first section and a second section following the first section and a third section following the second section. The film structure has a first layer sequence of several layers, having a first electrode layer for forming an anode or a cathode, and a second layer sequence of several layers, having a second electrode layer for forming an anode or cathode different from the first electrode layer. The first and the second layer sequences are arranged on different sections of the carrier film in such a way that the first and the second layer sequences come in contact with each other and the film battery is thereby activated only once a body is labeled.