Battery having the following features: - it comprises a housing, - it comprises at least one single cell having at least one positive and at least one negative electrode, which is arranged in an interior inside the housing, - it comprises a positive pole stud, led through a wall of the housing, that is electrically connected to the at least one positive electrode and/or a negative pole stud, led through a wall of the housing, that is electrically connected to the at least one negative electrode, and - it comprises at least one pneumatically operable electrical switch that responds to a pressure rise beyond a pressure threshold value that arises in the interior of the housing by changing its switching state from "closed" to "open" and in so doing interrupts the electrical connection between at least one of the pole studs and the at least one electrode connected thereto, wherein - the switch comprises an electrically conductive spring element (106; 206) that adopts a stable first state in the "closed" switching state and a stable or metastable second state in the "open" switching state and is transferrable from the first to the second state by a pressure above the pressure threshold value, - the spring element (106; 206) electrically connects two contact elements and of the electrical connection that is to be interrupted as a result of the pressure rise to one another in a first state and is at a physical distance from at least one of the contact elements in the second state, and - the switch comprises a membrane that can be used to detect the rising pressure and to transfer it to the spring element (106; 206), characterized in that the spring element (106; 206) - has a base having a central, circular base area and having an annular base area, arranged around the latter, that has an inner edge and an outer edge, and - the base is transferrable from a convex state, in which the circular base area is arranged below a plane defined by the outer edge of the annular base area, to a concave state, in which the circular base area is arranged above a plane defined by the outer edge of the annular base area, by a pressure on the circular base area, and wherein - the spring element is designed in the style of a cup and - has a circumferential side wall (119; 219) and an opening defined by a free edge of the side wall, and - the side wall (119; 219) is divided into radial segments (212a - 212n) by axial slots, the individual segments (212a - 212n) being seated on the outer edge of the annular base area, or - the spring element has, instead of the side wall divided by the axial slots, a side wall at which the axial slots are partly or completely replaced by gaps between the individual segments that are designed to be as wide as the segments themselves or wider, or - the spring element has only one of the segments instead of the circumferential side wall. - it comprises a housing, - it comprises at least one single cell having at least one positive and at least one negative electrode, which is arranged in an interior inside the housing, - it comprises a positive pole stud, led through a wall of the housing, that is electrically connected to the at least one positive electrode and/or a negative pole stud, led through a wall of the housing, that is electrically connected to the at least one negative electrode, and - it comprises at least one pneumatically operable electrical switch that responds to a pressure rise beyond a pressure threshold value that arises in the interior of the housing by changing its switching state from "closed" to "open" and in so doing interrupts the electrical connection between at least one of the pole studs and the at least one electrode connected thereto, - the switch comprises an electrically conductive spring element (106; 206) that adopts a stable first state in the "closed" switching state and a stable or metastable second state in the "open" switching state and is transferrable from the first to the second state by a pressure above the pressure threshold value, - the spring element (106; 206) electrically connects two contact elements and of the electrical connection that is to be interrupted as a result of the pressure rise to one another in a first state and is at a physical distance from at least one of the contact elements in the second state, and - the switch comprises a membrane that can be used to detect the rising pressure and to transfer it to the spring element (106; 206), - has a base having a central, circular base area and having an annular base area, arranged around the latter, that has an inner edge and an outer edge, and - the base is transferrable from a convex state, in which the circular base area is arranged below a plane defined by the outer edge of the annular base area, to a concave state, in which the circular base area is arranged above a plane defined by the outer edge of the annular base area, by a pressure on the circular base area, and - the spring element is designed in the style of a cup and - has a circumferential side wall (119; 219) and an opening defined by a free edge of the side wall, and - the side wall (119; 219) is divided into radial segments (212a - 212n) by axial slots, the individual segments (212a - 212n) being seated on the outer edge of the annular base area, or - the spring element has, instead of the side wall divided by the axial slots, a side wall at which the axial slots are partly or completely replaced by gaps between the individual segments that are designed to be as wide as the segments themselves or wider, or - the spring element has only one of the segments instead of the circumferential side wall.