System för bibringande av de olika driftsegenskaper till ett batteridrivet skruvåtdragningsverktyg

摘要

A battery energized portable power tool has a pistol type housing with a connector for attachment of a replaceable battery unit, and an upgrading module insertable between the housing and the battery unit and being provided with accessories for adding extra operational features to the tool for meeting specific demands for different tool applications, for instance a transceiver for wireless signal communication with a stationary control unit.