Disclosed is a secondary battery that includes a bare cell, a first circuit module, and a second circuit module. The bare cell includes an electrode terminal connected to one type of polarity of the battery and a plate terminal connected to another type of polarity of the battery. The first and second circuit modules are disposed on an upper surface of the plate terminal, and are disposed at opposite sides of the electrode terminal. External terminals, which are mounted on the second circuit module and are electrically coupled to an external device, are positioned higher than the electrode terminal. This structure of the battery minimizes the size of the battery.