SECONDARY BATTERY

A secondary battery includes an electrode body that includes a positive and a negative electrode plate, a battery case that has an opening in which the electrode body is accommodated, a sealing body that seals the opening, an internal terminal that is disposed on an inner side of the sealing body and connected to the positive or the negative electrode plate, and an external terminal that is disposed on an outer side of the sealing body and connected to the internal terminal. The external terminal includes a rivet that is formed in such a manner as to extend through the sealing body, and the internal terminal includes a first portion made of a first metal and a second portion made of a second metal. The external terminal is made of the second metal, and the rivet of the external terminal is joined to the second portion of the internal terminal.