Patent attributes
A sealed battery (100) includes a power generation element (120), a battery case (110), and an external positive terminal (150) fixed to a first case wall (110a). Case side faces (110c, 110d) serve as external negative electrode portions providing an electrical connection to a negative electrode of the power generation element (120). The external positive terminal (150) has extended joint portions (155) extending in a direction perpendicular to the first case wall (110a). The extended joint portions (155) are laid to overlap from outside with and connected to the external negative electrode portions when the external positive terminal (150) of the sealed battery (100) is brought into contact with a second case wall (110b) of another sealed battery (100).
