NOVELTY - The pack has a printed circuit board (20) extending parallel to battery cells that are directly plugged via a connector (24). A communication port (28) is coupled to the board for transferring a signal and data from an external unit to a CPU of a host unit. The connector includes a multitude of elastic, resilient, conductive regions and a multiplicity of elastic, resilient, dielectric regions, combined in alternate fashion as to form a single stack. The board has a substrate formed with a preset wiring pattern electrically and/or mechanically joined to the CPU of the host unit and to the cell.    USE - Used for providing power to a host unit such as portable electronic unit with a removable power supply e.g. portable hand scanner unit, bar code reader, transmitter, receiver, computer, personal electronic organizer, electronic navigation device, mobile terminal (claimed) and communication unit.    ADVANTAGE - The connector includes the multitude of elastic, resilient, conductive regions and the multiplicity of elastic, resilient, dielectric regions, combined in alternate fashion as to form the single stack, so that changing the battery pack provides for new connection contacts that replace the worn out contacts, throughout a life time of the host unit, thus increasing reliability of communication with the host unit. The printed circuit board includes the substrate formed with a predetermined wiring pattern electrically and/or mechanically joined to the CPU of the host unit and to the battery cell, thus avoiding the need for dedicated communication ports associated with the host unit and the CPU, and reducing costs associated with fabrication and design of the host unit.    DETAILED DESCRIPTION - INDEPENDENT CLAIMs are also included for:    (A) a method for a host unit having a battery pack to communicate with a peripheral unit,    (B) a mobile terminal comprising a bar code reader and a battery pack compartment and a CPU.    DESCRIPTION OF DRAWING(S) - The drawing shows an illustration of a perspective view of a PCB of the battery pack with communication ports.    Flexible printed circuit board (20)    Wiring patterns (22)    Connector (24)    Communication ports (28)    Charging contacts (29)