CYLINDRICAL BATTERY

The cylindrical battery includes: an electrode body in which a positive electrode plate and a negative electrode plate are wound with a separator therebetween: an electrolyte; a bottomed cylindrical outer can that houses the electrode body and the electrolyte; and a sealing body that closes an opening of the outer can, wherein the sealing body includes a nipture plate that is caulked and fixed to the opening of the outer can with a gasket therebetween, and an external terminal that is not caulked and fixed to the opening of the outer can, the rupture plate has a valve part that is ruptured when an internal battery pressure rises, and the external terminal is fixed to an upper surface portion of a valve part.