NOVELTY - A bipolar electrochemical battery comprises a stack of at least two electrochemical cells electrically arranged in series. Each electrochemical cell comprises negative and positive electrodes, a separator, and first and second electrically conductive laminations. The laminations are sealed peripherally to form an enclosure including the electrodes, separator and electrolyte.    USE - For use as electrochemical battery.    ADVANTAGE - The inventive battery has high energy storage capacity, efficient battery performance, and long-term chemical and physical stability.    DETAILED DESCRIPTION - A bipolar electrochemical battery comprises a stack of at least two electrochemical cells electrically arranged in series, with the positive face of each cell contacting the negative face of an adjacent cell. Each electrochemical cell comprises a negative electrode (2), a positive electrode (3), a separator (4) between the electrodes and including an electrolyte, a first electrically conductive lamination (5) in electrical contact with the outer face of negative electrode, and a second electrically conductive lamination (6) in electrical contact with the outer face of positive electrode. Each conductive lamination includes an inner metal layer (7, 7a), and a polymeric outer layer (8, 8a) having perforation(s) (9, 9a) to expose the inner metal layer. The first and second laminations are sealed peripherally to each other to form an enclosure including the electrodes, separator, and electrolyte.    An INDEPENDENT CLAIM is also included for fabrication of bipolar electrochemical battery by providing a stack of at least two electrochemical cells, each comprising negative and positive electrodes, separator, and first and second electrically conductive laminations; and sealing the first and second laminations peripherally to each other to form an enclosure.    DESCRIPTION OF DRAWING(S) - The figure shows an overview of a wafer cell.    Negative electrode (2)    Positive electrode (3)    Separator (4)    First conductive lamination (5)    Second conductive lamination (6)    Inner metal layers (7, 7a)    Polymeric outer layers (8, 8a)    Perforations (9, 9a)