Loudspeaker battery pack

1. A loudspeaker comprising:

an enclosure defining an open front side;

an audio transducer positioned within the enclosure and configured to emit sound in a forward direction from the open front side of the enclosure;

a battery receptacle provided by the enclosure; and

a removable battery pack assembly selectively received within the battery receptacle along a longitudinal direction, wherein the removable battery pack assembly includes

a battery pack having a plurality of electrochemical cells to generate an output voltage configured to power the audio transducer,

a connector provided at an insertion end of the battery pack for electrically connecting the plurality of electrochemical cells with the audio transducer, and

a battery door secured with a plurality of removable fasteners to a base end of the battery pack opposite the insertion end, the battery door further secured to the enclosure with a threaded fastener configured to be tightened parallel to the longitudinal direction.

2. The loudspeaker of claim 1 , wherein the threaded fastener is held captive on the battery pack door by a retaining clip.

3. The loudspeaker of claim 1 , wherein the threaded fastener is a first threaded fastener, the loudspeaker further comprising a second threaded fastener configured to be tightened parallel to the longitudinal direction.

4. The loudspeaker of claim 1 , wherein the battery receptacle is provided on the bottom side of the enclosure such that the longitudinal direction is parallel to a height direction of the loudspeaker.

5. The loudspeaker of claim 1 , wherein the plurality of removable fasteners securing the battery door to the base end of the battery pack includes fasteners extending in different directions, including both parallel to the longitudinal direction and perpendicular to the longitudinal direction.

6. The loudspeaker of claim 1 , further comprising plural cooperative sets of keying features between the battery receptacle and the battery pack configured to only allow full insertion of the battery pack and securement of the battery door to the enclosure in one prescribed relative orientation.

7. The loudspeaker of claim 6 , wherein at least one of the plural cooperative sets of keying features provides an increasingly tighter fit with progressive insertion of the battery pack into the battery receptacle.

8. The loudspeaker of claim 6 , wherein the plural cooperative sets of keying features include first and second longitudinal channels on a first lateral side of the battery pack, a third longitudinal channel on a second opposite lateral side of the battery pack, and an open-ended boss on the insertion end adjacent the connector.

9. A loudspeaker comprising:

an enclosure defining an open front side;

an audio transducer positioned within the enclosure and configured to emit sound in a forward direction from the open front side of the enclosure;

a battery receptacle provided by the enclosure;

a removable battery pack assembly selectively received within the battery receptacle along a longitudinal direction, wherein the removable battery pack assembly includes

a battery pack having a plurality of electrochemical cells to generate an output voltage configured to power the audio transducer, and

a battery door secured to the battery pack to be unitized therewith for movement with the battery pack within the battery receptacle; and

plural cooperative sets of keying features between the battery receptacle and the battery pack configured to only allow full insertion of the battery pack and securement of the battery door to the enclosure in one prescribed relative orientation,

wherein at least one of the plural cooperative sets of keying features provides an increasingly tighter fit with progressive insertion of the battery pack along the longitudinal direction into the battery receptacle.

10. The loudspeaker of claim 9 , wherein the battery door is securable to the enclosure with at least one threaded fastener that tightens parallel to the longitudinal direction.

11. The loudspeaker of claim 9 , wherein the battery door is secured to the battery pack by a plurality of fasteners extending in different directions, including both parallel to the longitudinal direction and perpendicular to the longitudinal direction.

12. The loudspeaker of claim 11 , wherein the plurality of fasteners securing the battery door to the battery pack are positioned at or adjacent to a base end of the battery pack, the base end being opposite an insertion end of the battery pack.

13. The loudspeaker of claim 9 , wherein the battery receptacle is provided on the bottom side of the enclosure such that the longitudinal direction is parallel to a height direction of the loudspeaker.

14. The loudspeaker of claim 9 , wherein the battery pack includes a connector configured to establish electrical communication with the audio transducer, the connector provided at an insertion end of the battery pack adjacent a keying feature of the plural cooperative sets of keying features.

15. A battery pack for selective retention into a battery receptacle of a loudspeaker, the loudspeaker having a multi-pin electrical connector, a plurality of keying features in the battery receptacle, and a plurality of threaded apertures adjacent the battery receptacle, the battery pack comprising:

a plurality of electrochemical cells to generate an output voltage for the loudspeaker;

a plurality of keying features provided on an exterior of the battery pack and configured to mate with the plurality of keying features of the battery receptacle upon insertion of the battery pack into the battery receptacle in a longitudinal direction;

a multi-pin electrical connector provided at an insertion end of the battery pack adjacent a first one of the plurality of keying features and configured to mate with the multi-pin electrical connector of the loudspeaker;

a plurality of fastener-receiving flanges provided on the battery pack at and/or adjacent to a base end thereof opposite the insertion end; and

wherein the plurality of keying features includes a keying feature centrally provided on the insertion end of the battery pack adjacent the multi-pin electrical connector of the battery pack.

16. A battery pack assembly including the battery pack of claim 15 and a battery door secured with removable fasteners to the plurality of fastener-receiving flanges of the battery pack such that the battery door is unitized with the battery pack and removable with the battery pack upon removal of the battery pack from the battery receptacle of the loudspeaker.

17. The battery pack assembly of claim 16 , wherein the removable fasteners extend in different directions, including parallel to the longitudinal direction and perpendicular to the longitudinal direction.

18. The battery pack assembly of claim 17 , wherein the removable fasteners include a pair of threaded fasteners extending parallel to the longitudinal direction on a lateral side of the battery pack, and a threaded fastener extending perpendicular to the longitudinal direction on the base end of the battery pack.

19. The battery pack of claim 15 , wherein the plurality of fastener-receiving flanges provided on the battery pack includes a pair of laterally-extending flanges on a first lateral side of the battery pack, and a flange extending parallel to the longitudinal direction from the base end at a position spaced away from the first lateral side.

20. The battery pack of claim 19 , wherein the first lateral side of the battery pack has two of the plurality of keying features provided as longitudinal channels, and wherein a second lateral side of the battery pack opposite the first lateral side has a single one of the plurality of keying features provided as a longitudinal channel.

21. A battery pack for selective retention into a battery receptacle of a loudspeaker, the loudspeaker having a multi-pin electrical connector, a plurality of keying features in the battery receptacle, and a plurality of threaded apertures adjacent the battery receptacle, the battery pack comprising:

a plurality of electrochemical cells to generate an output voltage for the loudspeaker;

a plurality of keying features provided on an exterior of the battery pack and configured to mate with the plurality of keying features of the battery receptacle upon insertion of the battery pack into the battery receptacle in a longitudinal direction;

a multi-pin electrical connector provided at an insertion end of the battery pack adjacent a first one of the plurality of keying features and configured to mate with the multi-pin electrical connector of the loudspeaker; and

a plurality of fastener-receiving flanges provided on the battery pack at and/or adjacent to a base end thereof opposite the insertion end,

wherein the plurality of fastener-receiving flanges provided on the battery pack includes a pair of laterally-extending flanges on a first lateral side of the battery pack, and a flange extending parallel to the longitudinal direction from the base end at a position spaced away from the first lateral side,

wherein the first lateral side of the battery pack has two of the plurality of keying features provided as longitudinal channels, and wherein a second lateral side of the battery pack opposite the first lateral side has a single one of the plurality of keying features provided as a longitudinal channel.