BATTERY

A battery is provided in which damage of the electrode tab group is suitably inhibited. In a suitable embodiment of the herein disclosed battery, the positive electrode tab includes a boundary portion between a forming area in which a protective layer is disposed and a tab exposed area in which the positive electrode tab is exposed. At least a part of the separators among the separators configuring the electrode body having a laminate structure are joined to each other, and at least a part of the join part is closer to the boundary portion.