Battery pack, holster, and extendible processing and interface platform for mobile devices

• US 8,971,039 B2
• Filed: 11/02/2010
• Issued: 03/03/2015
• Est. Priority Date: 01/18/2008
• Status: Active Grant

• Current Assignee: Mophie Incorporated (Evercel, Inc.)
• Original Assignee: Mophie Incorporated (Evercel, Inc.)
• Inventors: Huang, Daniel, Brand, Matthew
• Primary Examiner(s): HAUGHTON, ANTHONY MICHAEL
• Application Number:
  US12/938,351
• Publication Number:
  US 20110159324A1
• Time in Patent Office: 1,582 Days
• Field of Search: 361/679.55, 361/679.56, 361/679.41, 206/308.3
• US Class Current: 361/679.56
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: G06F 1/1626 with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
• CPC Class Codes: G06F 1/1632 External expansion units, e.g. docking stations
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H01M 10/488 Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
• CPC Class Codes: H01M 2220/30 Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 50/202 Casings or frames around the primary casing of a single cell or a single battery
• CPC Class Codes: H01M 50/247 specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H02J 7/0045 concerning the insertion or the connection of the batteries
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H04B 1/3883 Arrangements for mounting batteries or battery chargers
• CPC Class Codes: H04B 1/3888 Arrangements for carrying or protecting transceivers
• CPC Class Codes: H04M 1/0254 comprising one or a plurality of mechanically detachable modules
• CPC Class Codes: H04M 1/0262 for a battery compartment
• CPC Class Codes: H04M 1/0283 for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y10T 29/49108 Electric battery cell making

Abstract

A battery pack is provided for a mobile communication device, comprising a casing defining a cavity that conforms, at least partially, to the outer shape of the mobile communication device and one or more rechargeable power cells housed within the thickness of the casing. An internal interface engages a corresponding interface on the mobile communication device to provide power from the one or more rechargeable cells to the mobile communication device. An external interface is electrically coupled to the internal interface in order to transmit signals from the mobile communication device to an external device and may further serve to recharge the one or more rechargeable power cells. The battery pack may also serve as an extendible platform by providing additional integrated communication interfaces and/or processors that can be utilized by the mobile communication device to extend its communication and/or processing capabilities.

Claims

1. A battery pack for a mobile device comprising:

(i) a bottom section comprising;

(1) 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;

(2) a battery cell, enclosed in the bottom section;

(3) electronic circuitry, coupled to the battery cell;

(4) 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;

(5) an internal interface, on the bottom sidewall, positioned to connect to an interface on the mobile device, and coupled through the electronic circuitry to the battery cell; and

(6) an external interface, positioned on an outside bottom side of the bottom section, coupled through the electronic circuitry to the battery cell and internal interface; and

(ii) a top section comprising;

(1) a top side that will be positioned against a top side edge of the mobile device when the top section is seated against the bottom section; and

(2) an open side end, opposite of the top side,

wherein the top section slides onto the bottom section through the open side end,

wherein when the top section is seated against the bottom section, the top and bottom sections meet at and form a seam which extends across a back of the battery pack,

wherein when the top section is seated against the bottom section to form the back of the battery pack, and wherein the top section overlaps at least one portion of the bottom section to hold the top section to the bottom section, and

when the top section is seated against the bottom section, a first open-polygon-shaped opening for the bottom section merges with a second open-polygon-shaped opening for the top section 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.

2. The battery pack of claim 1, wherein the bottom section further comprises:

(7) a back surface having a button, coupled to the electronic circuitry, positioned on a side of the seam closer to the outside bottom side of the bottom section.

3. The battery pack of claim 1, wherein the first open-polygon-shaped opening comprises a U shape and the second open-polygon-shaped opening comprises an upside-down U shape.

4. The battery pack of claim 1, wherein the bottom section further comprises:

(7) a button, coupled to the electronic circuitry.

5. The battery pack of claim 4, wherein the bottom section further comprises:

(8) a plurality of LED lights, coupled to the electronic circuitry, and wherein the LED lights indicate a power or charge level for the battery cell.

6. The battery pack of claim 1, wherein when connecting a cable to the external interface of the bottom section, the cable does not pass through any opening of the top section.

7. The battery pack of claim 1, wherein the external interface comprises a micro USB connector.

8. The battery pack of claim 1, wherein electronic components are provided on one or more circuit boards, enclosed within the bottom section.

9. The battery pack of claim 1, wherein the battery cell can be charged via the external interface and wherein the mobile device, when coupled to the internal interface, can communicate with an external device via the external interface.

10. The battery pack of claim 9, wherein a plurality of LED lights, visible on the back of the battery pack, indicate a power or charge level of the battery cell.

11. The battery pack of claim 3, wherein the closed shape comprises a contoured rectangle shape.

12. A battery pack for a mobile device comprising:

(i) a bottom section comprising;

(1) 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;

(2) a battery cell, enclosed in the bottom section;

(3) electronic circuitry, coupled to the battery cell;

(4) 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;

(5) an internal interface, on the bottom sidewall, positioned to connect to an interface on the mobile device, and coupled through the electronic circuitry to the battery cell; and

(6) an external interface, positioned on an outside bottom side of the bottom section, coupled through the electronic circuitry to the battery cell and internal interface; and

(ii) a top section comprising;

(1) a top side that will be positioned against a top side edge of the mobile device when the top section is seated against the bottom section; and

(2) an open side end, opposite of the top side, wherein the top section slides onto the bottom section through the open side end,

wherein when the top section is seated against the bottom section, the top and bottom sections meet at and form a seam which extends across a back of the battery pack, and

when the top section is seated against the bottom section, a first open-polygon-shaped opening for the bottom section merges with a second open-polygon-shaped opening for the top section 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, and

wherein when the interface of the mobile device is connected to the internal interface of the bottom section and the screen of the mobile device faces up the battery cell is positioned under the back of the housing of the mobile device.

13. A method of making a mobile device battery pack, the method comprising the steps of:

(a) providing a bottom section of the battery pack for the mobile device, the bottom section comprising;

(i) a base front surface; and

(ii) a base back surface,

wherein a housing of the mobile device will be placed against the base front surface;

(b) enclosing a battery cell between the base front surface and the base back surface;

(c) connecting one or more electronic circuitries to the battery cell and an internal interface and external interface; and

(d) providing a top section for the battery pack for the mobile device that slides onto the bottom section, wherein when the top section is seated against the bottom section, the top and bottom sections form a seam which extends across a back of the battery pack, and when the top section is seated against the bottom section, a first open-shaped opening for the bottom section merges with a second open-shaped opening for the top section 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, and wherein when the interface of the mobile device is connected to the internal interface of the bottom section and the screen of the mobile device faces up the battery cell is positioned under the back of the housing of the mobile device.

14. A case for an electronic device comprising:

a lower case portion comprising;

a base surface upon which a back of a housing of the electronic device will be placed against, wherein the base surface comprises a top edge;

a battery, enclosed in the lower case portion;

electronic circuitry, coupled to the battery;

a lower sidewall, connected to the base surface at an end opposite of the top edge, that will be positioned against a bottom side edge of the electronic device;

an inner connector, on the lower sidewall, positioned to connect to a connector of the electronic device, and coupled through the electronic circuitry to the battery; and

an outer connector, positioned on an outside bottom side of the lower case portion, coupled through the electronic circuitry to the battery and inner connector; and

an upper case portion comprising;

an upper sidewall that will be positioned against a top side edge of the electronic device when the upper case portion is seated against the lower case portion; and

an open side end, opposite of the upper sidewall,

wherein the upper case portion slides onto the lower case portion through the open side end in a direction along the base surface from the top edge to the lower sidewall,

wherein when the upper case portion is seated against the lower case portion, the upper and lower case portions meet at and form a seam which extends across a back of the case, and

when the upper case portion is seated against the lower case portion, a first open-polygon-shaped opening for the lower case portion merges with a second open-polygon-shaped opening for the upper case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape, and

wherein when the interface of the mobile device is connected to the internal interface of the bottom section and the screen of the mobile device faces up the battery cell is positioned under the back of the housing of the mobile device.

15. A case for an electronic device comprising:

a first case portion comprising;

a base surface upon which a back of a housing of the electronic device will be placed against, wherein the base surface comprises a top edge;

a battery, enclosed in the first case portion;

electronic circuitry, coupled to the battery;

a lower sidewall, connected to the base surface at an end opposite of the top edge, that will be positioned against a bottom side edge of the electronic device;

an inner connector, on the lower sidewall, positioned to connect to a connector of the electronic device, and coupled through the electronic circuitry to the battery; and

an outer connector, positioned on an outside of the first case portion, coupled through the electronic circuitry to the battery and inner connector; and

a second case portion comprising;

an upper sidewall that will be positioned against a top side edge of the electronic device when the second case portion is seated against the first case portion; and

an open side end, opposite of the upper sidewall,

wherein the second case portion slides onto the first case portion through the open side end,

wherein when the second case portion is seated against the first case portion, the first and second case portions meet at and form a seam which extends across a back of the case, and

when the second case portion is seated against the first case portion, a first open-shaped opening for the first case portion merges with a second open-shaped opening for the second case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape, and

wherein when the interface of the mobile device is connected to the internal interface of the bottom section and the screen of the mobile device faces up the battery cell is positioned under the back of the housing of the mobile device.

16. A method of making an electronic device case comprising:

providing a lower case portion of the electronic device case comprising a base front surface and base back surface, wherein a housing of an electronic device will be placed against the base front surface;

enclosing a battery between the base front surface and base back surface;

connecting electronic circuitry to the battery, to an inner connector and to an outer connector; and

providing an upper case portion for the electronic device case that slides onto the lower case portion, wherein when the upper case portion is seated against the lower case portion, the upper and lower case portions form a seam which extends across a back of the case, and

when the upper case portion is seated against the lower case portion, a first open-shaped opening for the lower case portion merges with a second open-shaped opening for the upper case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape, and

wherein when the interface of the mobile device is connected to the internal interface of the bottom section and the screen of the mobile device faces up the battery cell is positioned under the back of the housing of the mobile device.

17. A method of making an electronic device case comprising:

providing a first case portion of the electronic device case comprising a base front surface and base back surface, wherein a housing of an electronic device will be placed against the base front surface;

enclosing a battery between the base front surface and base back surface;

connecting electronic circuitry to the battery and an inner and outer connector, wherein the electronic circuitry implements a charging mode during which the battery can be charged via the outer connector, and a sync mode during which an electronic device when coupled to the inner connector can be synchronized with another electronic device coupled to the outer connector; and

providing a second case portion for the electronic device case that slides onto the first case portion, wherein when the second case portion is seated against the first case portion, the first and second case portions form a seam which extends across a back of the case, and

when the second case portion is seated against the first case portion, a first open-shaped opening for the first case portion merges with a second open-shaped opening for the second case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape, and

wherein when the interface of the mobile device is connected to the internal interface of the bottom section and the screen of the mobile device faces up the battery cell is positioned under the back of the housing of the mobile device.

18. A battery pack for a mobile device comprising:

(i) a bottom section comprising;

(1) 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;

(2) a battery cell, enclosed in the bottom section;

(3) electronic circuitry, coupled to the battery cell;

(4) 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;

(5) an internal interface, on the bottom sidewall, positioned to connect to an interface on the mobile device, and coupled through the electronic circuitry to the battery cell;

(6) an external interface, positioned on an outside bottom side of the bottom section, coupled through the electronic circuitry to the battery cell and internal interface; and

(7) a plurality of LED lights, coupled to the electronic circuitry, and wherein the LED lights indicate a power or charge level for the battery cell; and

(ii) a top section comprising;

(1) a top side that will be positioned against a top side edge of the mobile device when the top section is seated against the bottom section; and

(2) an open side end, opposite of the top side,

wherein the top section slides onto the bottom section through the open side end,

wherein when the top section is seated against the bottom section, the top and bottom sections meet at and form a seam which extends across a back of the battery pack, and

when the top section is seated against the bottom section, a first open-polygon-shaped opening for the bottom section merges with a second open-polygon-shaped opening for the top section 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.

19. A method of making a mobile device battery pack, the method comprising the steps of:

(a) providing a bottom section of the battery pack for the mobile device, the bottom section comprising;

(i) a base front surface;

(ii) a base back surface; and

(iii) a plurality of LED lights wherein a housing of the mobile device will be placed against the base front surface;

(b) enclosing a battery cell between the base front surface and the base back surface;

(c) connecting one or more electronic circuitries to the battery cell, to the plurality of LED lights, to an internal interface and to an external interface; and

(d) providing a top section for the battery pack for the mobile device that slides onto the bottom section,

wherein when the top section is seated against the bottom section, the top and bottom sections form a seam which extends across a back of the battery pack, and

when the top section is seated against the bottom section, a first open-shaped opening for the bottom section merges with a second open-shaped opening for the top section 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.

20. A case for an electronic device comprising:

a lower case portion comprising;

a base surface upon which a back of a housing of the electronic device will be placed against, wherein the base surface comprises a top edge;

a battery, enclosed in the lower case portion;

electronic circuitry, coupled to the battery;

a lower sidewall, connected to the base surface at an end opposite of the top edge, that will be positioned against a bottom side edge of the electronic device;

an inner connector, on the lower sidewall, positioned to connect to a connector of the electronic device, and coupled through the electronic circuitry to the battery; and

an outer connector, positioned on an outside bottom side of the lower case portion, coupled through the electronic circuitry to the battery and inner connector; and

a plurality of LED lights, coupled to the electronic circuitry; and

an upper case portion comprising;

an upper sidewall that will be positioned against a top side edge of the electronic device when the upper case portion is seated against the lower case portion; and

an open side end, opposite of the upper sidewall,

wherein the upper case portion slides onto the lower case portion through the open side end in a direction along the base surface from the top edge to the lower sidewall,

wherein when the upper case portion is seated against the lower case portion, the upper and lower case portions meet at and form a seam which extends across a back of the case, and

when the upper case portion is seated against the lower case portion, a first open-polygon-shaped opening for the lower case portion merges with a second open-polygon-shaped opening for the upper case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

21. A case for an electronic device comprising:

a first case portion comprising;

a base surface upon which a back of a housing of the electronic device will be placed against, wherein the base surface comprises a top edge;

a battery, enclosed in the first case portion;

electronic circuitry, coupled to the battery;

a lower sidewall, connected to the base surface at an end opposite of the top edge, that will be positioned against a bottom side edge of the electronic device;

an inner connector, on the lower sidewall, positioned to connect to a connector of the electronic device, and coupled through the electronic circuitry to the battery; and

an outer connector, positioned on an outside of the first case portion, coupled through the electronic circuitry to the battery and inner connector; and

a plurality of LED lights, coupled to the electronic circuitry; and

a second case portion comprising;

an upper sidewall that will be positioned against a top side edge of the electronic device when the second case portion is seated against the first case portion; and

an open side end, opposite of the upper sidewall,

wherein the second case portion slides onto the first case portion through the open side end,

wherein when the second case portion is seated against the first case portion, the first and second case portions meet at and form a seam which extends across a back of the case, and

when the second case portion is seated against the first case portion, a first open-shaped opening for the first case portion merges with a second open-shaped opening for the second case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

22. A method of making an electronic device case comprising:

providing a lower case portion of the electronic device case comprising a base front surface and base back surface, wherein a housing of an electronic device will be placed against the base front surface;

enclosing a battery between the base front surface and base back surface;

connecting electronic circuitry to the battery, to a plurality of LED lights, to an inner connector and to an outer connector; and

providing an upper case portion for the electronic device case that slides onto the lower case portion, wherein when the upper case portion is seated against the lower case portion, the upper and lower case portions form a seam which extends across a back of the case, and

when the upper case portion is seated against the lower case portion, a first open-shaped opening for the lower case portion merges with a second open-shaped opening for the upper case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

23. A method of making an electronic device case comprising:

providing a first case portion of the electronic device case comprising a base front surface and base back surface, wherein a housing of an electronic device will be placed against the base front surface;

enclosing a battery between the base front surface and base back surface;

connecting electronic circuitry to the battery, to a plurality of LED lights, to an inner connector and to an outer connector, wherein the electronic circuitry implements a charging mode during which the battery can be charged via the outer connector, and a sync mode during which an electronic device when coupled to the inner connector can be synchronized with another electronic device coupled to the outer connector; and

providing a second case portion for the electronic device case that slides onto the first case portion, wherein when the second case portion is seated against the first case portion, the first and second case portions form a seam which extends across a back of the case, and

when the second case portion is seated against the first case portion, a first open-shaped opening for the first case portion merges with a second open-shaped opening for the second case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

24. A battery pack for a mobile device comprising:

(i) a bottom section comprising;

(1) 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;

(2) a battery cell, enclosed in the bottom section;

(3) electronic circuitry, coupled to the battery cell;

(4) 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;

(5) an internal interface, on the bottom sidewall, positioned to connect to an interface on the mobile device, and coupled through the electronic circuitry to the battery cell;

(6) an external interface, positioned on an outside bottom side of the bottom section, coupled through the electronic circuitry to the battery cell and internal interface; and

(7) a button coupled directly and mechanically to a back surface of the bottom section and coupled to the electric circuitry; and

(ii) a top section comprising;

(1) a top side that will be positioned against a top side edge of the mobile device when the top section is seated against the bottom section; and

(2) an open side end, opposite of the top side, wherein the top section slides onto the bottom section through the open side end,

wherein when the top section is seated against the bottom section, the top and bottom sections meet at and form a seam which extends across a back of the battery pack, and

when the top section is seated against the bottom section, a first open-polygon- shaped opening for the bottom section merges with a second open-polygon-shaped opening for the top section 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.

25. A method of making a mobile device battery pack, the method comprising the steps of:

(a) providing a bottom section of the battery pack for the mobile device, the bottom section comprising;

(i) a base front surface;

(ii) a base back surface; and

(iii) a button, coupled directly and mechanically to the base back, surface;

wherein a housing of the mobile device will be placed against the base front surface;

(b) enclosing a battery cell between the base front surface and the base back surface;

(c) connecting one or more electronic circuitries to the battery cell, to the button, to an internal interface and to an external interface; and

(d) providing a top section for the battery pack for the mobile device that slides onto the bottom section,

wherein when the top section is seated against the bottom section, the top and bottom sections form a seam which extends across a back of the battery pack, and

when the top section is seated against the bottom section, a first open-shaped opening for the bottom section merges with a second open-shaped opening for the top section 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.

26. A kit for a mobile device battery pack comprising:

(i) a tray comprising;

(1) a first compartment and

(2) a second compartment;

(ii) a cable, contained within the first compartment; and

(iii) a battery pack for the mobile device, contained within the second compartment,

wherein the mobile device battery pack comprises;

(1) a bottom section comprising;

(A) a base front surface;

(B) a base back surface;

(C) a button coupled directly and mechanically to the back surface;

(D) a battery cell, contained between the base front surface and the base back surface, wherein a housing of the mobile device will be placed against the base front surface; and

(E) electronic circuitry, coupled to the battery cell and to the button; and

(2) a top section, optionally attached to the bottom section,

wherein a first open-polygon opening for the bottom section merges with a second open-polygon opening for the top section to form a cavity of the battery pack through which a screen of the mobile device will be visible, the cavity having a closed-polygon shape.

27. A case for an electronic device comprising:

a lower case portion comprising;

a base surface upon which a back of a housing of the electronic device will be placed against, wherein the base surface comprises a top edge;

a battery, enclosed in the lower case portion;

electronic circuitry, coupled to the battery;

a lower sidewall, connected to the base surface at an end opposite of the top edge, that will be positioned against a bottom side edge of the electronic device;

an inner connector, on the lower sidewall, positioned to connect to a connector of the electronic device, and coupled through the electronic circuitry to the battery; and

an outer connector, positioned on an outside bottom side of the lower case portion, coupled through the electronic circuitry to the battery and inner connector; and

a button coupled directly and mechanically to a base back surface of the lower case portion and coupled to the electronic circuitry; and

an upper case portion comprising;

an upper sidewall that will be positioned against a top side edge of the electronic device when the upper case portion is seated against the lower case portion; and

an open side end, opposite of the upper sidewall,

wherein the upper case portion slides onto the lower case portion through the open side end in a direction along the base surface from the top edge to the lower sidewall,

wherein when the upper case portion is seated against the lower case portion, the upper and lower case portions meet at and form a seam which extends across a back of the case, and

when the upper case portion is seated against the lower case portion, a first open-polygon-shaped opening for the lower case portion merges with a second open-polygon-shaped opening for the upper case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

28. A case for an electronic device comprising:

a first case portion comprising;

a base surface upon which a back of a housing of the electronic device will be placed against, wherein the base surface comprises a top edge;

a battery, enclosed in the first case portion;

electronic circuitry, coupled to the battery;

a lower sidewall, connected to the base surface at an end opposite of the top edge, that will be positioned against a bottom side edge of the electronic device;

an inner connector, on the lower sidewall, positioned to connect to a connector of the electronic device, and coupled through the electronic circuitry to the battery; and

an outer connector, positioned on an outside of the first case portion, coupled through the electronic circuitry to the battery and inner connector; and

a button coupled directly and mechanically to a base back surface of the first case portion and coupled to the electronic circuitry; and

a second case portion comprising;

an upper sidewall that will be positioned against a top side edge of the electronic device when the second case portion is seated against the first case portion; and

an open side end, opposite of the upper sidewall,

wherein the second case portion slides onto the first case portion through the open side end,

wherein when the second case portion is seated against the first case portion, the first and second case portions meet at and form a seam which extends across a back of the case, and

when the second case portion is seated against the first case portion, a first open-shaped opening for the first case portion merges with a second open-shaped opening for the second case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

29. A method of making an electronic device case comprising:

providing a lower case portion of the electronic device case comprising a base front surface and base back surface, wherein a housing of an electronic device will be placed against the base front surface;

enclosing a battery between the base front surface and base back surface;

connecting electronic circuitry to the battery, to a button coupled directly and mechanically to the base back surface of the lower case portion, to an inner and to an outer connector; and

providing an upper case portion for the electronic device case that slides onto the lower case portion, wherein when the upper case portion is seated against the lower case portion, the upper and lower case portions form a seam which extends across a back of the case, and

when the upper case portion is seated against the lower case portion, a first open-shaped opening for the lower case portion merges with a second open-shaped opening for the upper case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

30. A method of making an electronic device case comprising:

providing a first case portion of the electronic device case comprising a base front surface and base back surface, wherein a housing of an electronic device will be placed against the base front surface;

enclosing a battery between the base front surface and base back surface;

connecting electronic circuitry to the battery, to a button coupled directly and mechanically to the base back surface, to an inner connector and to an outer connector, wherein the electronic circuitry implements a charging mode during which the battery can be charged via the outer connector, and a sync mode during which an electronic device when coupled to the inner connector can be synchronized with another electronic device coupled to the outer connector; and

providing a second case portion for the electronic device case that slides onto the first case portion, wherein when the second case portion is seated against the first case portion, the first and second case portions form a seam which extends across a back of the case, and when the second case portion is seated against the first case portion, a first open-shaped opening for the first case portion merges with a second open-shaped opening for the second case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

31. A battery pack for a mobile device comprising:

(i) a bottom section comprising;

(1) 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;

(2) a battery cell, enclosed in the bottom section;

(3) electronic circuitry, coupled to the battery cell;

(4) 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;

(5) an internal interface, on the bottom sidewall, positioned to connect to an interface on the mobile device, and coupled through the electronic circuitry to the battery cell; and

(6) an external interface, positioned on an outside bottom side of the bottom section, coupled through the electronic circuitry to the battery cell and internal interface;

(7) a guide on a sidewall;

(8) an insert section; and

(ii) a top section comprising;

(1) a top side that will be positioned against a top side edge of the mobile device when the top section is seated against the bottom section; and

(2) an open side end, opposite of the top side,

wherein, when the top section slides on the guide of the bottom section and over the insert section to attach to the bottom section, an edge of the top section overlaps with an edge of the bottom section to form the seam, and exterior surfaces of the bottom section and top section at the seam become flush with each other;

wherein when the top section is seated against the bottom section, the top and bottom sections meet at and form a seam which extends across a back of the battery pack, and

when the top section is seated against the bottom section, a first open-polygon- shaped opening for the bottom section merges with a second open-polygon-shaped opening for the top section 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.

32. A method of making a mobile device battery pack, the method comprising the steps of:

(a) providing a bottom section of the battery pack for the mobile device, the bottom section comprising;

(i) a base front surface; and

(ii) a base back surface, wherein a housing of the mobile device will be placed against the base front surface;

(b) forming in the bottom section a guide on a sidewall and an insert section;

(c) enclosing a battery cell between the base front surface and the base back surface;

(d) connecting one or more electronic circuitries to the battery cell and an internal interface and external interface;

(e) providing a top section for the battery pack for the mobile device that slides on the guides of the bottom section and over the insert section to attach to the bottom section and an edge of the top section overlaps with an edge of the bottom section to form a seam and exterior surfaces of the bottom section and top section at the seam become flush with each other; and

wherein when the top section is seated against the bottom section, the top and bottom sections form a seam which extends across a back of the battery pack, and

when the top section is seated against the bottom section, a first open-shaped opening for the bottom section merges with a second open-shaped opening for the top section 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.

33. A case for an electronic device comprising:

a lower case portion comprising;

a base surface upon which a back of a housing of the electronic device will be placed against, wherein the base surface comprises a top edge;

a battery, enclosed in the lower case portion;

electronic circuitry, coupled to the battery;

a lower sidewall, connected to the base surface at an end opposite of the top edge, that will be positioned against a bottom side edge of the electronic device;

an inner connector, on the lower sidewall, positioned to connect to a connector of the electronic device, and coupled through the electronic circuitry to the battery; and

an outer connector, positioned on an outside bottom side of the lower case portion, coupled through the electronic circuitry to the battery and inner connector;

a guide on a sidewall, and

an insert section, and an upper case portion comprising;

an upper sidewall that will be positioned against a top side edge of the electronic device when the upper case portion is seated against the lower case portion; and

an open side end, opposite of the upper sidewall,

wherein, when the upper case portion slides on the guide of the lower case portion and over the insert section through the open side end in a direction along the base surface from the top edge to the lower sidewall to attach to the lower case portion, an edge of the upper case portion overlaps with an edge of the lower case portion to form a seam, and exterior surfaces of the lower case portion and upper case portion at the seam become flush with each other,

wherein when the upper case portion is seated against the lower case portion, the upper and lower case portions meet at and form a seam which extends across a back of the case, and

when the upper case portion is seated against the lower case portion, a first open-polygon-shaped opening for the lower case portion merges with a second open-polygon-shaped opening for the upper case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

34. A case for an electronic device comprising:

a first case portion comprising;

a base surface upon which a back of a housing of the electronic device will be placed against, wherein the base surface comprises a top edge;

a battery, enclosed in the first case portion;

electronic circuitry, coupled to the battery;

a lower sidewall, connected to the base surface at an end opposite of the top edge, that will be positioned against a bottom side edge of the electronic device;

an inner connector, on the lower sidewall, positioned to connect to a connector of the electronic device, and coupled through the electronic circuitry to the battery; and

an outer connector, positioned on an outside of the first case portion, coupled through the electronic circuitry to the battery and inner connector;

a guide on a sidewall, and

an insert section, and

a second case portion comprising;

an upper sidewall that will be positioned against a top side edge of the electronic device when the second case portion is seated against the first case portion; and

an open side end, opposite of the upper sidewall,

wherein, when the second case portion slides on the guide of the first case portion and over the insert section through the open side end to attach to the first case portion, an edge of the first case portion overlaps with an edge of the second case portion to form a seam, and exterior surfaces of the first case portion and second case portion at the seam become flush with each other, wherein when the second case portion is seated against the first case portion, the first and second case portions meet at and form a seam which extends across a back of the case, and

when the second case portion is seated against the first case portion, a first open-shaped opening for the first case portion merges with a second open-shaped opening for the second case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

35. A method of making an electronic device case comprising:

providing a lower case portion of the electronic device case comprising a base front surface and base back surface, wherein a housing of an electronic device will be placed against the base front surface;

forming in the lower case portion a guide on a sidewall and an insert section;

enclosing a battery between the base front surface and base back surface;

connecting electronic circuitry to the battery, to an inner connector and to an outer connector; and

providing an upper case portion for the electronic device case that slides on the guides of the lower case portion and over the insert section to attach to the lower case portion and wherein an edge of the upper case portion overlaps with an edge of the lower case portion to form a seam, and exterior surfaces of the lower case portion and upper case portion at the seam become flush with each other,

wherein when the upper case portion is seated against the lower case portion, the upper and lower case portions form a seam which extends across a back of the case, and

when the upper case portion is seated against the lower case portion, a first open-shaped opening for the lower case portion merges with a second open-shaped opening for the upper case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

36. A method of making an electronic device case comprising:

providing a first case portion of the electronic device case comprising a base front surface and base back surface, wherein a housing of an electronic device will be placed against the base front surface;

forming in the first case portion a guide on a sidewall and an insert section;

enclosing a battery between the base front surface and base back surface;

connecting electronic circuitry to the battery and an inner and outer connector,

wherein the electronic circuitry implements a charging mode during which the battery can be charged via the outer connector, and a sync mode during which an electronic device when coupled to the inner connector can be synchronized with another electronic device coupled to the outer connector; and

providing a second case portion for the electronic device case that slides on the guides of the first case portion and over the insert section to attach to the first case portion and wherein an edge of the second case portion overlaps with an edge of the first case portion to form a seam, and exterior surfaces of the first case portion and second case portion at the seam become flush with each other,

wherein when the second case portion is seated against the first case portion, the first and second case portions form a seam which extends across a back of the case, and

when the second case portion is seated against the first case portion, a first open-shaped opening for the first case portion merges with a second open-shaped opening for the second case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

37. A battery pack for a mobile device comprising:

(i) a bottom section comprising;

(1) 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;

(2) a battery cell, enclosed in the bottom section;

(3) electronic circuitry, coupled to the battery cell;

(4) 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;

(5) an internal interface, on the bottom sidewall, positioned to connect to an interface on the mobile device, and coupled through the electronic circuitry to the battery cell; and

(6) an external interface, positioned on an outside bottom side of the bottom section, coupled through the electronic circuitry to the battery cell and internal interface; and

(ii) a top section comprising;

(1) a top side that will be positioned against a top side edge of the mobile device when the top section is seated against the bottom section; and

(2) an open side end, opposite of the top side,

wherein the top section slides onto the bottom section through the open side end,

wherein when the top section is seated against the bottom section, the top and bottom sections meet at and form a seam which extends across a back of the battery pack and the top section and the bottom section together substantially replicate an external shape of the mobile device, and

when the top section is seated against the bottom section, a first open-polygon-shaped opening for the bottom section merges with a second open-polygon-shaped opening for the top section 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.

38. A method of making a mobile device battery pack, the method comprising the steps of

(a) providing a bottom section of the battery pack for the mobile device, the bottom section comprising:

(i) a base front surface; and

(ii) a base back surface,

wherein a housing of the mobile device will be placed against the base front surface;

(b) enclosing a battery cell between the base front surface and the base back surface;

(c) connecting one or more electronic circuitries to the battery cell, to an internal interface and to an external interface; and

(d) providing a top section for the battery pack for the mobile device that slides onto the bottom section,

wherein when the top section is seated against the bottom section, the top and bottom sections from a seam which extends across a back of the pack and the top section and the bottom section together substantially replicate an external shape of the mobile device, and

when the top section is seated against the bottom section, a first open-shaped opening for the bottom section merges with a second open-shaped opening for the top section 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.

39. A kit for a mobile device battery pack comprising:

(i) a tray comprising;

(1) a first compartment and

(2) a second compartment;

(ii) a cable, contained within the first compartment; and

(iii) a battery pack for the mobile device, contained within the second compartment,

wherein the mobile device battery pack comprises;

(1) a bottom section comprising;

(A) a base front surface;

(B) a base back surface;

(C) a battery cell, contained between the base front surface and the base back surface, wherein a housing of the mobile device will be placed against the base front surface; and

(D) electronic circuitry, coupled to the battery cell; and

(2) a top section, optionally attached to the bottom section,

wherein a first open-polygon opening for the bottom section merges with a second open-polygon opening for the top section to form a cavity of the battery pack through which a screen of the mobile device will be visible, the cavity having a closed-polygon shape; and

the top section and the bottom section together substantially replicate an external shape of the mobile device.

40. A case for an electronic device comprising:

a lower case portion comprising;

a base surface upon which a back of a housing of the electronic device will be placed against, wherein the base surface comprises a top edge;

a battery, enclosed in the lower case portion;

electronic circuitry, coupled to the battery;

a lower sidewall, connected to the base surface at an end opposite of the top edge, that will be positioned against a bottom side edge of the electronic device;

an inner connector, on the lower sidewall, positioned to connect to a connector of the electronic device, and coupled through the electronic circuitry to the battery; and

an outer connector, positioned on an outside bottom side of the lower case portion, coupled through the electronic circuitry to the battery and inner connector; and

an upper case portion comprising;

an upper sidewall that will be positioned against a top side edge of the electronic device when the upper case portion is seated against the lower case portion; and

an open side end, opposite of the upper sidewall,

wherein the upper case portion slides onto the lower case portion through the open side end in a direction along the base surface from the top edge to the lower sidewall,

wherein when the upper case portion is seated against the lower case portion, the upper and lower case portions meet at and form a seam which extends across a back of the case,

wherein the top section and the bottom section together substantially replicate an external shape of the mobile device, and

when the upper case portion is seated against the lower case portion, a first open-polygon-shaped opening for the lower case portion merges with a second open-polygon-shaped opening for the upper case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

41. A case for an electronic device comprising:

a first case portion comprising;

a base surface upon which a back of a housing of the electronic device will be placed against, wherein the base surface comprises a top edge;

a battery, enclosed in the first case portion;

electronic circuitry, coupled to the battery;

a lower sidewall, connected to the base surface at an end opposite of the top edge, that will be positioned against a bottom side edge of the electronic device;

an inner connector, on the lower sidewall, positioned to connect to a connector of the electronic device, and coupled through the electronic circuitry to the battery; and

an outer connector, positioned on an outside of the first case portion, coupled through the electronic circuitry to the battery and inner connector; and

a second case portion comprising;

an upper sidewall that will be positioned against a top side edge of the electronic device when the second case portion is seated against the first case portion; and

an open side end, opposite of the upper sidewall,

wherein the second case portion slides onto the first case portion through the open side end,

wherein when the second case portion is seated against the first case portion, the first and second case portions meet at and form a seam which extends across a back of the case,

wherein the top section and the bottom section together substantially replicate an external shape of the mobile device, and

when the second case portion is seated against the first case portion, a first open-shaped opening for the first case portion merges with a second open-shaped opening for the second case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape.

42. A method of making an electronic device case comprising:

providing a lower case portion of the electronic device case comprising a base front surface and base back surface, wherein a housing of an electronic device will be placed against the base front surface;

enclosing a battery between the base front surface and base back surface;

connecting electronic circuitry to the battery and an inner and outer connector; and

providing an upper case portion for the electronic device case that slides onto the lower case portion, wherein when the upper case portion is seated against the lower case portion, the upper and lower case portions form a seam which extends across a back of the case, and

when the upper case portion is seated against the lower case portion, a first open-shaped opening for the lower case portion merges with a second open-shaped opening for the upper case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape; and

wherein the top section and the bottom section together substantially replicate an external shape of the mobile device.

43. A method of making an electronic device case comprising:

providing a first case portion of the electronic device case comprising a base front surface and base back surface, wherein a housing of an electronic device will be placed against the base front surface;

enclosing a battery between the base front surface and base back surface;

connecting electronic circuitry to the battery and an inner and outer connector, wherein the electronic circuitry implements a charging mode during which the battery can be charged via the outer connector, and a sync mode during which an electronic device when coupled to the inner connector can be synchronized with another electronic device coupled to the outer connector; and

providing a second case portion for the electronic device case that slides onto the first case portion, wherein when the second case portion is seated against the first case portion, the first and second case portions form a seam which extends across a back of the case, and

when the second case portion is seated against the first case portion, a first open-shaped opening for the first case portion merges with a second open-shaped opening for the second case portion to form a front opening of the case through which a screen of the electronic device will be visible, the front opening having a closed shape; and

wherein the top section and the bottom section together substantially replicate an external shape of the mobile device.

44. A battery pack for a mobile device comprising:

(i) a bottom section comprising;

(1) 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;

(2) a battery cell, enclosed in the bottom section;

(3) electronic circuitry, coupled to the battery cell;

(4) 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;

(5) an internal interface, on the bottom sidewall, positioned to connect to an interface on the mobile device, and coupled through the electronic circuitry to the battery cell; and

(6) an external interface, positioned on an outside bottom side of the bottom section, coupled through the electronic circuitry to the battery cell and internal interface; and

(7) a component connected to the electronic circuitry selected from the group consisting of;

(A) a button, coupled directly and mechanically to a back surface of the bottom section; and

(B) a plurality of LED lights, wherein the LED lights indicate a charge level for the battery cell; and

(ii) a top section comprising;

(1) a top side that will be positioned against a top side edge of the mobile device when the top section is seated against the bottom section; and

(2) an open side end, opposite of the top side, wherein the top section slides onto the bottom section through the open side end,

wherein when the top section is seated against the bottom section, the top and bottom sections meet at and form a seam which extends across a back of the battery pack, and

when the top section is seated against the bottom section, a first open-polygon- shaped opening for the bottom section merges with a second open- polygon-shaped opening for the top section 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.

45. A method comprising the steps of:

(a) providing a first case portion of a battery pack for a mobile device, the first case portion comprising;

(i) a base front surface, and

(ii) a base back surface, wherein a housing of the mobile device will be placed against the, base front surface;

(b) enclosing a battery cell between the base front surface and base back surface;

(c) connecting electronic circuitry to the battery cell, to an internal interface, and to an external interface;

wherein the internal interface is adapted to interface with an interface of the mobile device;

(d) providing a second case portion of the battery pack for the mobile device that slides onto the first case portion, wherein when the second case portion is seated against the first case portion, the first and second case portions form a seam which extends across a back of the battery pack; and

(e) forming on the first case portion a guide in a sidewall and an insert section, wherein the second case portion slides on the guide and over the insert section and an edge of the second case portion overlaps with an edge of the first case portion to form a seam, and exterior surfaces of the first and second case portions at the seam become flush with each other; and

when the second case portion is seated against the first case portion, a first open-shaped opening for the first case portion merges with a second open-shaped opening for the second case 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.

46. A method comprising the steps of:

(a) providing a first case portion of a battery pack for a mobile device, the first case portion comprising;

(i) a first end;

(ii) a second end, opposite of the first end;

(iii) a base front surface; and

(iv) a base back surface wherein a housing of the mobile device will be placed against the base front surface, and the mobile device comprises an interface for supplying power to the mobile device;

(b) enclosing a battery cell between the base front surface and base back surface;

wherein the battery comprises a third end and a fourth end, opposite of the third end;

(c) positioning an internal connector of the first case portion closer to the third end of the battery cell than the fourth end of the battery cell;

wherein the fourth end of the battery cell is closer to the first end of the first case portion than it is to the second end, and the first end will be closer than the second end is to a side edge of the electronic device that is opposite of the device connector;

(d) coupling electronic circuitry to the battery cell, to an internal interface, and to an external interface; and

(e) providing a second case portion of the battery pack for the mobile device that slideably couples to the first case portion,

wherein when the second case portion is seated against the first case portion, the first and second case portions form a seam which extends across a back of the battery pack; and

when the first case portion is seated against the second case portion, a first open-shaped opening for the first case portion merges with a second open-shaped opening for the second case 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.

47. A battery pack for a mobile device, the battery pack comprising:

(i) a first case portion comprising;

(1) a back plane comprising

(a) a base front surface; and

(b) a base back surface;

wherein a housing of a mobile device will be placed against the base front surface;

(2) a battery cell, enclosed within a thickness of the back plane and between the base front surface and base back surface;

(3) electronic circuitry, coupled to the battery cell, to an internal interface, and to an external interface;

wherein the internal interface connects to an interface of the mobile device; and

(4) a guide on a sidewall; and

(5) an insert section; and

(ii) a second case portion, slideable onto the first case portion;

wherein, when the second case portion slides on the guide of the first case portion and over the insert section to attach to the first case portion, edges of the first and second case portion overlap with each other to form a seam, and exterior surfaces of the first and second case portions at the seam become flush with each other;

wherein, when the second case portion is seated against the first case portion, the first and second case portions form a seam which extends across a back of the battery pack;

when the second case portion is seated against the first case portion, a first open-shaped opening for the first case portion merges with a second open-shaped opening for the second case 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.

48. A battery pack for a mobile device, the battery pack comprising:

(i) a first case portion comprising;

(1) a first end;

(2) a second end, opposite of the first end

(3) a base front surface; and

(4) a base back surface;

wherein a housing of a mobile device will be placed against the base front surface, and the mobile device comprises an interface for supplying power to the mobile device;

(5) a battery cell enclosed between the base front surface and the base back surface;

wherein the battery comprises a third end and a fourth end, opposite of the third end;

(6) an internal interface, positioned closer to the third end of the battery than the fourth end of the battery

wherein the fourth end of the battery is closer to the first end of the first case portion than it is to the second end of the first case portion;

wherein the first end of the first case portion will be closer than the second end of the first case portion to a side edge of the mobile device that is opposite of the interface of the mobile device;

(7) electronic circuitry, coupled to the battery cell, to the internal interface, and to an external interface;

(ii) a second case portion that slideably couples to the first case portion;

wherein when the second case portion is seated against the first case portion, the first and second case portions form a seam which extends across a back of the battery pack, and

when the first case portion is seated against the second case portion, a first open-polygon-shaped opening for the first case portion merges with a second open-polygon-shaped opening for the second case 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.

49. A battery pack for a mobile device comprising:

(i) a bottom section comprising;

(1) 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;

(2) a battery cell, enclosed in the bottom section;

(3) electronic circuitry, coupled to the battery cell;

(4) 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;

(5) an internal interface, on the bottom sidewall, positioned to connect to an interface on the mobile device, and coupled through the electronic circuitry to the battery cell; and

(6) an external interface, positioned on an outside bottom side of the bottom section, coupled through the electronic circuitry to the battery cell and internal interface;

(7) a button, coupled to the electronic circuitry; and

(8) a plurality of LED lights, coupled to the electronic circuitry, and wherein the LED lights indicate a power or charge level for the battery cell; and

(ii) a top section comprising;

(1) a top side that will be positioned against a top side edge of the mobile device when the top section is seated against the bottom section; and

(2) an open side end, opposite of the top side,

wherein the top section slides onto the bottom section through the open side end,

wherein when the top section is seated against the bottom section, the top and bottom sections meet at and form a seam which extends across a back of the battery pack, and

when the top section is seated against the bottom section, a first open-polygon-shaped opening for the bottom section merges with a second open-polygon-shaped opening for the top section 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.

50. A battery pack for a mobile device comprising:

(i) a bottom section comprising;

(1) 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;

(2) a battery cell, enclosed in the bottom section;

(3) electronic circuitry, coupled to the battery cell;

(4) 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;

(5) an internal interface, on the bottom sidewall, positioned to connect to an interface on the mobile device, and coupled through the electronic circuitry to the battery cell; and

(6) an external interface, positioned on an outside bottom side of the bottom section, coupled through the electronic circuitry to the battery cell and internal interface; and

(ii) a top section comprising;

(1) a top side that will be positioned against a top side edge of the mobile device when the top section is seated against the bottom section; and

(2) an open side end, opposite of the top side,

wherein the top section slides onto the bottom section through the open side end,

wherein when the top section is seated against the bottom section, the top and bottom sections meet at and form a seam which extends across a back of the battery pack,

wherein the battery cell can be charged via the external interface and wherein the mobile device, when coupled to the internal interface, can communicate with an external device via the external interface,

wherein a plurality of LED lights, visible on the back of the battery pack, indicate a power or charge level of the battery cell, and

when the top section is seated against the bottom section, a first open-polygon-shaped opening for the bottom section merges with a second open-polygon-shaped opening for the top section 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.