| 摘要 |
A manually operable working device, in particular a pressing device (1), having a pressing tool (23, 14); an electric motor (31) for driving the tool (12, 13); and a battery (34) for supplying energy to the electric motor (31). A control device has a voltage comparison element (39) that performs a voltage comparison between a present battery voltage and a limit voltage (55, 58, 61), such that the control device generates an attention signal and/or limits activation of the electric motor (31) so as to spare the battery (34) if the voltage comparison indicates that the present battery voltage is equal to or less than the limit voltage (55, 58, 61). The control device has an interval element (47) with at least one storable interval (t0); and a load element (31, 51) is present by way of which the battery (34) can be acted upon by a load cycle that generates a voltage curve (53, 54, 56, 57, 59) with a varying battery voltage. The interval element (47) is activated at least once after the load element (31, 51) is switched on, and the voltage comparison is performed within the interval (t0). The load element may be the electric motor (31), or may be an adjustable resistor (51).
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