Abstract: A power tool includes a generally elongate tool housing defining a longitudinal axis parallel with the length of the tool housing, a work tip located at a first end of the tool housing for supporting a work member, and a power source interface located at a second end of the tool housing for supporting a removable power source. The tool housing includes an elongate handle-shaped grip region between the work tip and power source interface, and generally parallel to the longitudinal axis, and a drive region that substantially encloses a motor separately from the handle-shaped grip region. The motor is located between the handle-shaped grip region and the work tip.

Abstract: A plunge circular saw, including a cutting body and a substrate pivotally connected to the cutting body. The cutting body contains a housing; at least one handle provided on the housing; a motor received within the housing; a circular saw blade mechanically connected to the motor; a battery pack electrically connected to the motor, and a hinge for pivotally connecting the cutting body to the substrate. The battery pack is detachably mounted to a trailing end of the cutting body. The cutting body is pivotable relative to the substrate by the hinge and movable between a cutting position and a parking position. The hinge is disposed at a position between the motor or the circular saw blade and the battery pack. The circular saw provided by the present invention improves the overall parallelism of the circular saw by changing the position of the hinge and gravity distribution thereof, thereby allowing the user to cut the workpiece more easily and accurately.