The invention relates to a restart protection device (1) for a battery-powered electric hand tool (2), comprising—a control capacitor (CCTRL) having a cathode and an anode, wherein the cathode can be connected to an earth connection (10) of the electric hand tool (2) and the anode can be connected via a battery pack interface (4) of the electric hand tool (2) to a connector wire (6) of a battery pack (3) of the electric hand tool (2); —a controllable discharge circuit (14) designed for discharging the control capacitor (CCTRL), wherein a control input of the discharge circuit (14) can be connected via the battery pack interface (4) to a signal line (9) of the battery pack (3); —a measuring device (15) designed to determine a charge state of the control capacitor (CCTRL); and—a control device (13) connected to the measuring device (15), which control device is configured to inhibit start-up of the electric hand tool (2) if the charge state of the control capacitor (CCTRL) determined by means of the measuring device (15) is below a specified threshold value and an operating switch (12) on the electric hand tool (2) is pressed at the same time.