1. A method for operating a power source connected to a manually actuated implement by a user, wherein the power source is switchable between an operating function and a standard function, wherein during the operating function parameters of the power source are set by way of operating elements of an operating and display unit on the power source and a movement of the implement in a space is captured by an evaluation unit arranged in the power source, wherein the operating function of the power source is activated before, after or between work done with the implement, whereupon the movement of the implement in the space is captured and an association is created between a position of the implement resulting from said movement and an operating element of the operating and display unit for setting and/or modifying at least one parameter of the parameters of the power source, and the association between the position and the operating element is confirmed, the at least one parameter of the parameters of the power source associated with the operating element is set and/or modified after confirming the association between the position and the operating element, and then the operating function of the power source is deactivated again.