The ornamental design for an electrichand crank with switches and handle extension, as shown and described.
FIG. 1 is a front view of an electric hand crank with switches and handle extension showing my new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a perspective view thereof;
FIG. 4 is a bottom view thereof; and,
FIG. 5 is a top view thereof.
The broken lines shown in the figures are included for the purpose of illustrating portions of the electric hand crank with switched and handle extension which form no part of the claimed design.