Battery with a Deactivation Device, and Motor Vehicle

A battery for a vehicle, the battery comprising:

• at least one cell assembly having a multitude of battery cells, wherein each of the battery cells has a cell housing with a degassing element for discharging any hot gas that forms in an event of a fault in the cell housing,
• a battery housing having housing walls that surround an accommodation space for accommodating the at least one cell assembly, and
• a deactivating device which is disposed in the accommodation space of the battery housing and comprises at least one shell filled with a combustion promoter,
• wherein the shell, on contact of at least one battery cell with the hot gas discharged, is configured to release the combustion promoter, and
• wherein the combustion promoter is configured to promote controlled burnoff of the hot gas within the accommodation space for deactivation of the hot gas, and hence to prevent ignition of the hot gas outside the accommodation space in an environment of the battery.