Patent ID: 7754379

Claim:
A secondary battery comprising: a positive electrode plate; a negative electrode plate; a housing enclosing the positive electrode plate and the negative electrode plate within an internal space formed by the housing; a positive electrode terminal connected to the positive electrode plate in the interior space of the housing and extending externally from the housing at a first portion of an outer edge of the housing, the positive electrode terminal having a plate shape; and a negative electrode terminal connected to the negative electrode plate in the interior space of the housing and extending externally from the housing at a second portion of the outer edge of the housing, the negative electrode having a plate shape; wherein the positive electrode terminal includes a first part fixedly adjoined to a second part, wherein the second part is formed of a conductive material of higher tensile strength compared to a conductive material of the first part; and wherein the first part has a first end extending into the internal space and an opposed second end fixedly adjoined to the second part, and the second part is spaced apart from the internal space.