Abstract: A mobile lifting device, which preferably has a mobile frame with a plurality of castors. The lifting device has a closed fluid circuit, in particular a hydraulic circuit. It has a cylinder with an elevating work chamber. The elevating work chamber is fluidically connected to a fluid reservoir via a first fluid conduit and a second fluid conduit. In the first fluid conduit, a main pump is arranged which can be driven by means of a rotatably drivable hand tool to supply fluid from the fluid reservoir into the elevating work chamber, thereby extending a piston rod of the fluid cylinder, for example, to lift a load. In the second fluid conduit, a flow control arrangement is arranged which can be switched between a blocking state and a release state by means of a lowering operating element. When the piston rod is extended, the flow control arrangement is in the blocking state.