Abstract: A method operates an electrically driven working device with at least one battery pack that is intended to supply the working device with electric drive power, wherein the working device and the battery pack are electrically connected to one another in detachable fashion for power supply purposes. The working device is selected from a set of different working devices able to be electrically connected to the battery pack in detachable fashion, which working devices differ in terms of a respective power consumption variable, and/or the working device has different operating modes that differ in terms of a respective power consumption variable. At least one power consumption variable, in particular during operation of the working device with the battery pack, is at least temporarily higher than a continuous power output variable of the battery pack.

Abstract: A method for determining information (Info) about a state (Z) of a drive motor system (2) and/or of a drive battery pack (11) of a gardening, forestry and/or construction device (1), includes the steps of: acquiring at least one sensor temperature (TS) of at least one temperature component (3) of the drive motor system (2) and/or of the drive battery pack (11) by way of at least one component temperature sensor (4) at the same time as and/or at a time after operation of the drive motor system (2) and/or of the drive battery pack (11) and/or of a heater (300) and/or of a cooler (310) and/or of a fan (320) for heating and/or for cooling the drive battery pack (11), wherein the temperature component (3) heats up or cools down due to the operation; ascertaining operating data (BD) of the operation, wherein the operating data (BD) are of a different kind than the sensor temperature (TS); comparing the acquired sensor temperature (TS) or a variable based on the sensor temperature and the ascertained operating data