NOVELTY - The stack type battery comprises a stacked electrode assembly comprising positive electrode plates (1) having positive electrode current collector tabs (11) protruding from the electrode assembly, negative electrode plates having negative electrode current collector tabs protruding from the electrode assembly and separators (3a) interposed between the positive and negative electrode plates, and a spacer for filling a portion of a gap formed in a current collector portion. The positive and negative electrode plates are alternately stacked one another with the separators.    USE - The stack type battery such as a lithium ion secondary battery is useful as power sources for robots, electric vehicles, backup power sources, and mobile information terminal devices such as mobile-phones, notebook computers and personal digital assistant devices.    ADVANTAGE - The high capacity stack type battery exhibits high energy density, reliability, and improved charge and discharge rate, and enables easy and reliable positioning of the current collector portion and easy and accurate manufacturing of the stacked electrode assembly.    DETAILED DESCRIPTION - The stack type battery comprises a stacked electrode assembly comprising positive electrode plates (1) having positive electrode current collector tabs (11) protruding from the electrode assembly, negative electrode plates having negative electrode current collector tabs protruding from the electrode assembly and separators (3a) interposed between the positive and negative electrode plates, and a spacer for filling a portion of a gap formed in a current collector portion. The positive and negative electrode plates are alternately stacked one another with the separators. The stacked positive and negative electrode current collector tabs are bundled in such a manner as to be gathered at a stacking direction-wise side of the stacked electrode assembly to form bent portions. A portion of bundled tabs extending from a bundled portion to a tip side of the bundled tabs are bent towards the other stacking direction-wise side of the stacked electrode assembly. The stacked electrode assembly: is covered and fixed by an insulating sheet such as a heat shrunk sheet having an insulation capability to cover both stacking direction-wise end faces and surround the stacked electrode assembly in a tubular shape; is accommodated in a battery case having flexibility; and is fixed with a pressure applied by an insulating sheet covering and fixing the stacked electrode assembly. A portion of the insulating sheet: is inserted between the stacked electrode assembly and the bent portions of the positive and negative electrode current collector tabs; covers the bent portions of the positive and negative electrode current collector tabs from outside; has a greater thickness than a remaining portion of the insulating sheet; and protrudes 0.5-1 mm more than protruding ends of the bent portions of the positive and negative electrode current collector tabs. The insulating sheet comprises a flap formed a portion of a seam portion of the insulating sheet, and a liquid passage port. The flap is configured to join the portion of the seam portion by overlaying and joining the flap to the insulating sheet.    DESCRIPTION OF DRAWING(S) - The diagram shows schematic view of portions of a stack type battery including (a) a plan view of a positive electrode, (b) a perspective view of a separator and (c) a plan view of a pouch-type separator.    Positive electrode plates (1)    Positive electrode active material layer (1a)    Pouch-type separator (3)    Separators (3a)    Sealing part (4)    Positive electrode current collector tab. (11)