The ornamental design for a batterycompartment of portableprocessing apparatus, as shown and described.
FIG. 1 is a front, left side and top perspective view of a battery compartment of portable processing apparatus showing the new design;
FIG. 2 is a front, right side, and bottom perspective view thereof; and,
FIG. 3 is a front elevation view thereof.
The broken lines shown in the figures represent unclaimed portions of the battery compartment of portable processing apparatus and form no part of the claimed design.
The rear of the device shown embodying the design does not include any claimed subject matter.