Electrical tool e.g. electrical drill bit, has first connection terminal electrically connected with circuit board, where external controller has second connection terminal releasably and electrically connected with first terminal

摘要

The tool (10) has a drive i.e. brushless motor, and a circuit board fixed in a housing (20) and electrically connected with each other. A first connection terminal (60) i.e. universal serial bus (USB)terminal, is electrically connected with the circuit board and exposed to outside of the housing. An external controller (80) has a second connection terminal (842) releasably and electrically connected with the first connection terminal. A display unit (822) displays a serial number of the tool, overall operation time of the tool or overall operation frequency of the tool.