Battery

A battery comprising:

• a first portion;
• and
• a second portion,
• wherein the first portion includes
• a first positive electrode layer,
• a first negative electrode layer, and
• a first solid electrolyte layer located between the first positive electrode layer and the first negative electrode layer,
• wherein the second portion includes
• a second positive electrode layer,
• a second negative electrode layer, and
• a second solid electrolyte layer located between the second positive electrode layer and the second negative electrode layer,
• wherein the first portion and the second portion are in contact with each other,
• the second portion is more sharply bent than the first portion, and
• at least one of Cp1<Cp2, Ce1<Ce2, and Cn1<Cn2 is satisfied,
• where Cp1 denotes a binder concentration in the first positive electrode layer, Cp2 denotes a binder concentration in the second positive electrode layer, Ce1 denotes a binder concentration in the first solid electrolyte layer, Ce2 denotes a binder concentration in the second solid electrolyte layer, Cn1 denotes a binder concentration in the first negative electrode layer, and Cn2 denotes a binder concentration in the second negative electrode layer.