Patent ID: 8367235

Claim:
A battery pack for a mobile device comprising: a bottom portion comprising: a back plane upon which a back of a housing of the mobile device will be placed against, wherein the back plane comprises a top edge; a battery cell, enclosed in the bottom portion; a processor, coupled to the battery cell; a bottom sidewall, connected to the back plane at an end opposite of the top edge, that will be positioned against a bottom side edge of the mobile device; an internal interface, on the bottom sidewall, positioned to connect to an interface on the mobile device, and coupled through the processor to the battery cell; and an external interface, positioned on an outside bottom side of the bottom portion, coupled through the processor to the battery cell and internal interface; and a top portion comprising: a top side that will be positioned against a top side edge of the mobile device when the top portion is seated against the bottom portion; and an open side end, opposite of the top side, wherein the top portion slides onto the bottom portion through the open side end, wherein when the top portion is seated against the bottom portion, the top and bottom portions meet at and form a seam which extends across a back of the battery pack, and when the top portion is seated against the bottom portion, a first open-polygon-shaped opening for the bottom portion merges with a second open-polygon-shaped opening for the top portion to form a cavity of the battery pack through which a screen of the mobile device will be visible, the cavity having a closed shape.