Waste-gas line for a battery in an aircraft, having: - a battery, - a first pipe section, which is connected to the battery and which has an inlet end and a first flange, - a separate second pipe section which has a second outlet end and a second flange; - an inner sleeve and an outer sleeve, wherein the inner sleeve and the outer sleeve are composed of a non-conductive material; wherein the inner sleeve is positioned on an outer side (28, 29) of the first flange and of the second flange; wherein the outer sleeve surrounds the first flange, the second flange and the inner sleeve; wherein the first flange and the second flange are spatially separated from one another in an axial direction of the waste-gas line and fastened to one another in such a way that at least the second pipe section is electrically insulated by the inner sleeve and the outer sleeve, such that no electrical current can be transmitted from the second pipe section to the first pipe section and such that a current induced by a lightning strike affecting the second pipe section cannot pass to the first pipe section and thus to the battery, and the combination of inner sleeve and outer sleeve is heat-resistant to a temperature of at least 1100°C and pressure-resistant to a pressure of 8 bar, in each case for a duration of at least 120s, wherein in each case one spacer is attached to the first flange and to the second flange in order to space the inner sleeve and the outer sleeve apart from one another in a radial direction. - a battery, - a first pipe section, which is connected to the battery and which has an inlet end and a first flange, - a separate second pipe section which has a second outlet end and a second flange; - an inner sleeve and an outer sleeve, wherein the inner sleeve and the outer sleeve are composed of a non-conductive material; wherein the inner sleeve is positioned on an outer side (28, 29) of the first flange and of the second flange; wherein the outer sleeve surrounds the first flange, the second flange and the inner sleeve; wherein the first flange and the second flange are spatially separated from one another in an axial direction of the waste-gas line and fastened to one another in such a way that at least the second pipe section is electrically insulated by the inner sleeve and the outer sleeve, such that no electrical current can be transmitted from the second pipe section to the first pipe section and such that a current induced by a lightning strike affecting the second pipe section cannot pass to the first pipe section and thus to the battery, and the combination of inner sleeve and outer sleeve is heat-resistant to a temperature of at least 1100°C and pressure-resistant to a pressure of 8 bar, in each case for a duration of at least 120s, wherein in each case one spacer is attached to the first flange and to the second flange in order to space the inner sleeve and the outer sleeve apart from one another in a radial direction. wherein the inner sleeve is positioned on an outer side (28, 29) of the first flange and of the second flange; wherein the outer sleeve surrounds the first flange, the second flange and the inner sleeve; wherein the first flange and the second flange are spatially separated from one another in an axial direction of the waste-gas line and fastened to one another in such a way that at least the second pipe section is electrically insulated by the inner sleeve and the outer sleeve, such that no electrical current can be transmitted from the second pipe section to the first pipe section and such that a current induced by a lightning strike affecting the second pipe section cannot pass to the first pipe section and thus to the battery, and the combination of inner sleeve and outer sleeve is heat-resistant to a temperature of at least 1100°C and pressure-resistant to a pressure of 8 bar, in each case for a duration of at least 120s, wherein in each case one spacer is attached to the first flange and to the second flange in order to space the inner sleeve and the outer sleeve apart from one another in a radial direction.