A method for manufacturing a housing of a battery cell is described. The method for manufacturing a housing (3) of a battery cell (1) comprises at least the following steps: (i) providing a metal sheet (13); (ii) deforming the metal sheet (13) into a housing component (5) with a curved shape, for example by drawing; and (iii) assembling the housing (3) including the housing component (5). The method is characterized in that the housing component (5) is provided with a corrosion protection layer (29) at least on a partial region (21) of the surface thereof after deformation. In this way, a through-opening (25), in particular in a partial region (21) that has been strongly bent during deformation, can be covered by a subsequently deposited corrosion protection layer (29). Consequently, corrosion on the housing (3) can be reliably prevented.