Portable power bank

Abstract

A portable power bank, which is to be coupled with a mobile device having a screen, includes a housing, a battery, a display, and a signal receiving module. The housing has a front side and a back side to be coupled with the mobile device. The battery is disposed inside the housing for charging the mobile device. The display is disposed at the front side of the housing. The signal receiving module is electrically connected with the display. The signal receiving module wirelessly receives a signal transmitted by the mobile device to enable the display to show a mirror image of an image of the screen of the mobile device. In this way, the portable power bank can show the mirror image of the screen image of mobile devices of different brands and charge the mobile devices.

Dependencies are inferred from the claim text.