Abstract: A machine tool, in particular a chop saw and/or miter saw, includes (i) at least one pivot arm, (ii) at least one drive unit arranged on the pivot arm, (iii) at least two energy storage units, in particular battery packs, which can be electrically connected in series, for supplying energy to the drive unit, and (iv) at least two coupling units for fastening the energy storage units to the pivot arm. The coupling units are arranged on the pivot arm at an offset to one another with respect to a longitudinal axis of the pivot arm, the longitudinal axis of the pivot arm running at least substantially parallel to coupling surfaces, in particular main extension planes, of the coupling units.

Abstract: The disclosure relates to a method for operating a system that includes at least one suction device and at least one hand-held power tool. The method includes establishing a communications link between the suction device and the hand-held power tool by means of at least one suction device communication unit and at least one hand-held power tool communication unit, and transmitting at least one communication signal by means of the communications link from the hand-held power tool, in particular the hand-held power tool communication unit, to the suction device, in particular the suction device communication unit. When the suction device is switched on, at least one start signal is sent to the hand-held power tool, the hand-held power tool being activatable only if the start signal is received by the hand-held power tool.