NOVELTY - The battery container has a connection piece (62) which is provided between an outer wall (54) and an inner wall (56) so as to be connected in a wall board (52). A surrounding wall is made into a double wall structure which consists of the inner wall separated and provided in a predetermined distance from the outer wall. The connection piece projected toward the other wall is provided in a tapered state. A front-tip part (65) of the connection piece is adhered to at least one of the outer wall and the inner wall at the other wall.    USE - Battery container for vehicle e.g. hybrid vehicle for cargo.    ADVANTAGE - Enables to reliably maintain the storage battery for a drive which has a predetermined weight since the battery container for vehicles is a double-wall structure which consists of an outer wall and an inner wall. Enables to reliably attach a fastening band to the chassis frame of a turning and a vehicle at the outer peripheral surface of the battery container for vehicles. Suppresses deformation of the outer wall or inner wall provided with the connection piece. Increases supporting force and brings high rigidity since the force is transmitted to an inner wall when thrust is applied to an outer wall. Enables to reliably prevent the electroconductive part of the storage battery for a drive to be in the state which can contact from the exterior of the battery container for vehicles, or the storage battery for a drive will be exposed out of the battery container for vehicles. Reduces damage to the battery container for vehicles in case of collision since collision energy is absorbed by the deformation effect and relieves the impact force received by the battery container for vehicles. Reduces weight and improves the fuel consumption and running performance of a vehicle since the battery container for vehicles is synthetic-resin-made. Enables to manufacture an exact shape of battery container for vehicles at low cost.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a part of a battery container for vehicles.    Wall board (52)    Outer wall (54)    Inner wall (56)    Connection piece (62)    Front-tip part (65)