A system and method for providing a communication port integral with a battery pack assembly is disclosed. The system provides a pathway between an external unit and a host unit via a printed circuit board of the battery pack. The battery pack can include communication ports mounted on the printed circuit board for interfacing with external units. The printed circuit board further includes a substrate(s) formed with a predetermined wiring pattern electrically and/or mechanically joined to the CPU of the host unit, as well as the battery cell(s).