Energy storage and power supply device

FIG. 1 is a front perspective view of an energy storage and power supply device, showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

All broken line portions of the figure drawings is included to show portions of the article that form no part of the claimed design. The dot-dash broken lines are boundary lines which define the edge of the claimed design. It is understood that the boundary lines form no part of the claimed design. The energy storage and power supply device is shown with symbolic breaks in its height and width, represented by jagged lines. The appearance of any portion of the article between the jagged lines forms no part of the claimed design.