Power supply unit, universal

Abstract

Portable energy storage device: 1.1 is a front perspective view of a portable energy storage device with a front cover; 1.2 is a front view thereof; 1.3 is a back view thereof with a back cover; 1.4 is a front perspective view thereof without the front cover; 1.5 is a front view thereof without the front cover; 1.6 is a back view thereof without the back cover; 1.7 is a left side view thereof; 1.8 is a right side view thereof; 1.9 is a top view thereof; and, 1.10 is a bottom view thereof; portions of the device shown in broken lines form no part of the claimed design; claim: the ornamental design for a portable energy storage device, as shown and described.

Images