Abstract: This document describes a protection circuit module including an integrated protection circuit chip and a secondary battery. According to execution examples in this document, the foregoing integrated protection circuit chip is attached at the bottom of a protection circuit module, and penetration hole equivalent to the projection of a battery cell is formed in the center of the protection circuit module. With this protection circuit module, it is possible to have a battery that the integrated protection circuit chip of the protection circuit module is included in the groove which is formed in the battery cell, and the projection of the battery cell is inserted into the penetration hole of the protection circuit module.