The ornamental design for a pelletgrillcart, as shown and described.
FIG. 1 is a front perspective view of a pellet grill cart, showing my new design with a pellet feeder and a pellet grill mounted thereto in broken lines;
FIG. 2 is an alternate front perspective view thereof, illustrated with the pellet feeder and the pellet grill omitted;
FIG. 3 is a bottom perspective view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a right-side elevational view thereof;
FIG. 7 is a left-side elevational view thereof;
FIG. 8 is a top plan view thereof; and,
FIG. 9 is a bottom plan view thereof.
The broken lines in the figures depict a pellet feeder, a pellet grill, and portions of the pellet grill cart and form no part of the claimed design.