Battery pack

The present invention relates to a battery pack. The battery pack includes a plurality of battery cells arranged side-by-side, a lead plate electrically connecting the plurality of battery cells, a protection circuit module electrically connected with the plurality of battery cells, and a temperature sensor electrically connected with the protection circuit module to measure a temperature of the plurality of battery cells, wherein the lead plate has hole into which the temperature sensor is inserted, for fixing the position of the temperature sensor. By the above construction, the installation position of the temperature sensor is specified, so that the temperature sensor may be prevented from being damaged and the reliability of the temperature sensor may be enhanced.