A bipolar battery of the present invention includes a battery element composed by stacking in series a plurality of bipolar electrodes, in each of which a positive electrode is formed on one surface of a collector and a negative electrode is formed on the other surface, with electrolytes interposed therebetween. Further, the bipolar battery includes laminate films covering the battery element, each of the laminate films containing a metal layer, and tabs composed by being extracted from the battery element to outsides of the laminate films. In the bipolar battery, thickness of a resin layer interposed between the tab and the metal layer is equal to or more than thickness of the tab.