NOVELTY - A battery housing for containing at least one battery and controlling its temperature, comprises a housing inlet for receiving fluid from a source external to the housing, and a housing outlet for expelling fluid from the housing; at least one battery compartment (40) for accommodating the at least one battery; and a compartment inlet by which fluid can enter the compartment and a compartment outlet by which fluid can exit the compartment.    USE - The battery housing is used for containing at least one battery and controlling its temperature (claimed).    ADVANTAGE - The present invention provides an arrangement in which the temperature of the cells can be, at least to some extent, controlled.    DETAILED DESCRIPTION - A battery housing for containing at least one battery and controlling its temperature, comprises a housing inlet for receiving fluid from a source external to the housing, and a housing outlet for expelling fluid from the housing; at least one battery compartment (40) for accommodating the at least one battery; and a compartment inlet by which fluid can enter the compartment and a compartment outlet by which fluid can exit the compartment, where fluid can be conveyed through the battery compartment from the compartment inlet to the compartment outlet; and selectively configurable ducting that is selectively configurable between: (a) a first configuration in which the ducting connects the compartment outlet to the compartment inlet such that fluid can be recirculated through the battery compartment, and (b) a second configuration in which the ducting connects the compartment inlet to the housing inlet such that fluid can enter the battery compartment from the external source, and connects the compartment outlet to the housing outlet such that fluid can be expelled from the battery compartment and the housing, without or with limited recirculation. An INDEPENDENT CLAIM is a vehicle comprising a battery housing for containing at least one battery and controlling its temperature.    DESCRIPTION OF DRAWING(S) - The drawing shows a rear perspective view of battery housing.    Outer housing body (20)    Outlet cutaway (22)    Battery compartment (40)    Ducting arrangement (60)    Inlet manifold beam (80)