NOVELTY - The battery has a recessed part formed in a side of an exterior body formed by annealing process of a molding metal foil (M1) and a cover metal foil (M2) of aluminum. A film having metal bonding property is thermo bonded between the foils. A pair of metal-bonding resin layers is formed on two surfaces of a laminated body. The metal-bonding resin layer is formed by unsaturated carboxylic acid graft modified or cross linked olefin polymer, graft modified olefin copolymer, copolymer of ethylene, acrylic acid or acrylic acid derivative, methacrylic acid or methacrylic acid derivative or olefin.    USE - Battery e.g. lithium ion secondary battery and lithium polymer rechargeable battery. Uses include but are not limited to personal computer, video camera, electric vehicle, energy storage, robot, satellite and portable terminal devices e.g. mobile telephone and personal digital assistant (PDA).    ADVANTAGE - The film has metal bonding property that is thermo bonded between two sheets of the aluminum foils and the metal foil cutting end surface vicinity is covered with the metal-bonding resin layers, thus preventing short circuit by the approach of metal foils. The metal foils of the exterior body contact an electric power generation element enclosed in the recessed part, thus taking out electric current from the exterior body directly without the need for projection of metal terminals for taking-out electric current from the exterior body, and hence ensuring hermetic sealing of the metal terminals. The process of attaching the metal terminals to the electric power generation element is skipped and the manufacturing operation is performed continuously, thus ensuring high productive efficiency of the battery. The need for joining metal terminals of multiple batteries while connecting multiple batteries is eliminated, thus simplifying the structure of the battery.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of an exterior body without an electric power generation element.    Molding metal foil (M1)    Cover metal foil (M2)    Flange part (4)    Recessed part (5)    Extension part (7)    Resin accumulation (8)