NOVELTY - The cell (1) has a chemical carrier (9) arranged in a cell housing (3) that exhibits a bulging design. A foamed material (11) is arranged between the cell housing and the chemical carrier and comprises polypropylene. The cell housing comprises a housing bottom (5) and a housing wall (7), where the housing bottom and the housing wall are convex outwardly curved. A rigid module frame comprises smaller dimensions than the cell and is made of metal or a composite material. A cell terminal (29) e.g. positive pole and negative pole, is provided at a housing cover (27) of the cell housing.    USE - Battery cell i.e. lithium-ion battery cell, for a pre-stressed battery module of a battery pack that is utilized in a battery such as heavy-duty battery i.e. high-voltage battery, of a vehicle e.g. electrical vehicle and hybrid vehicle. Can also be used for a lead rechargeable battery cell, a nickel hydrogen rechargeable battery cell, a nickel iron rechargeable battery cell, a lithium polymer rechargeable battery cell, a lithium metal rechargeable battery cell, a lithium manganese rechargeable battery cell, a lithium titanate rechargeable battery cell, a lithium sulfur rechargeable battery cell, a silver zinc rechargeable battery cell and a zinc bromine rechargeable battery cell.    ADVANTAGE - The cell housing exhibits the bulging design, so that a function of springy metal sheets is performed by the cell, thus avoiding requirement of weight-intensive springy metal sheets, and hence reducing weight and manufacturing costs of the cell. The cell is designed such that length tolerance of a battery module with the cell corresponds to tolerance of a press device in a module assembly, thus ensuring a narrower length tolerance for a battery pack, and hence reducing an installation space for the battery module and/or the battery pack in the vehicle.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) a pre-stressed battery module    (2) a method for manufacturing a shaped battery cell    (3) a method for manufacturing a pre-stressed battery module.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a shaped battery cell.    Battery cell (1)    Cell housing (3)    Housing bottom (5)    Housing wall (7)    Chemical carrier (9)    Foamed material (11)    Housing cover (27)    Cell terminal (29)