A battery including: a first electrode layer; a solid electrolyte layer disposed above the first electrode layer; a second electrode layer disposed above the solid electrolyte layer; and an electrode. The first electrode layer includes: a first current collector; and a first mixture layer disposed between the first current collector and the solid electrolyte layer. The first current collector includes a terminal portion protruding from the second electrode layer in top view, the solid electrolyte layer is exposed in at least a region of the terminal portion in the top view, the solid electrolyte layer covers part of a side surface of the first mixture layer in cross-sectional view and is in contact with the terminal portion of the first current collector, and the electrode is in contact with the solid electrolyte layer in an inside of at least a region of the terminal portion in top view.