There is provided a bipolar battery capable of appropriately dissipating heat generated in a cell member to the outside by a simple configuration. A bipolar battery (1) includes: a plurality of cell members (150) each including a positive electrode (151) having a positive active material layer (103), a negative electrode (152) having a negative active material layer (104), and an electrolyte layer (105) interposed between the positive electrode (151) and the negative electrode (152); and a plurality of frame units (110), (120), and (130) configured to form a plurality of cells (C) individually housing the plurality of cell members (150). The cell members (150) are electrically connected to each other in series. On an outer side surface of at least one frame unit (110), (120), and (130) of the plurality of frame units (110), (120), and (130), a recess (160) opening to the outer side surface is formed.