A battery of the present disclosure includes a first electrode layer, a first solid electrolyte layer, and a second electrode layer in this order. The first electrode layer includes: a first active material layer; a second active material layer positioned between the first active material layer and the first solid electrolyte layer, the second active material layer having the same polarity as the first active material layer has; and a second solid electrolyte layer positioned between the first active material layer and the second active material layer. The second solid electrolyte layer is continuous with the first solid electrolyte layer. A stacked battery of the present disclosure includes a plurality of the batteries, and the plurality of batteries are stacked so as to be electrically connected in series or in parallel.