E-cigarette and re-charging pack

1. A method of operating a rechargeable pack for containing and recharging an e-cigarette, the rechargeable pack comprising a pack battery; a first connector which is electrically connectable to an external power source; a first recharging mechanism for re-charging the pack battery using the external power source when the first connector is electrically connected to the external power source; a tube for receiving an e-cigarette such that the e-cigarette can be contained within the rechargeable pack; a second connector which is electrically connectable to the e-cigarette when the e-cigarette is received within the tube; and a second recharging mechanism for re-charging the e-cigarette using the pack battery when the e-cigarette is electrically connected to the second connector; the method comprising:

detecting when a foreign object may be located in the tube; and

responsive to the detecting, protecting against the pack battery providing current through the second connector.

2. The method of claim 1 , wherein the detecting comprises monitoring the current provided through the second connector.

3. The method of claim 2 , wherein the detecting comprises determining if the current provided through the second connector exceeds a predetermined threshold.

4. The method of claim 1 , wherein the detecting comprises attempting and failing to find a signal associated with the presence of an e-cigarette in the tube.

5. The method of claim 4 , wherein the signal is an optical signal.

6. The method of claim 4 , wherein the signal is an electrical signal.

7. The method of claim 1 , wherein for normal use of the rechargeable pack, the tube has a substantially vertical orientation, and an e-cigarette received into the tube engages the second connector under the force of gravity.

8. The method of claim 1 , wherein the rechargeable pack comprises a lid and a switch for detecting opening and closing of the lid, the method further comprising:

opening the lid to reset the rechargeable pack such that current may be provided across the second connector when the lid is next closed; and

removing the foreign object.

9. A rechargeable pack for containing and recharging an electronic vapor provision system, the rechargeable pack comprising:

a pack battery;

a first connector which is electrically connectable to an external power source;

a first recharging mechanism for re-charging the pack battery using the external power source when the first connector is electrically connected to the external power source;

a tube for receiving an electronic vapor provision system such that the electronic vapor provision system can be contained within the rechargeable pack;

a second connector which is electrically connectable to the electronic vapor provision system when the electronic vapor provision system is received within the tube; and

a second recharging mechanism for re-charging the electronic vapor provision system using the pack battery when the electronic vapor provision system is electrically connected to the second connector,

wherein rechargeable pack is configured to detect when a foreign object may be located in the tube and, responsive to detecting the foreign object in the tube, to protect against the pack battery providing current through the second connector.

10. The rechargeable pack of claim 9 , wherein the rechargeable pack is configured to detect the foreign object in the tube by monitoring the current provided through the second connector.

11. The rechargeable pack of claim 10 , wherein the rechargeable pack is configured to detect the foreign object in the tube by determining if the current provided through the second connector exceeds a predetermined threshold.

12. The rechargeable pack of claim 9 , wherein the rechargeable pack is configured to detect the foreign object in the tube by attempting and failing to find a signal associated with the presence of an electronic vapor provision system in the tube.

13. The rechargeable pack of claim 12 , wherein the signal is an optical signal.

14. The rechargeable pack of claim 12 , wherein the signal is an electrical signal.

15. The rechargeable pack of claim 9 , wherein for normal use of the rechargeable pack, the tube has a substantially vertical orientation, and an electronic vapor provision system received into the tube engages the second connector under the force of gravity.

16. The rechargeable pack of claim 9 , wherein the rechargeable pack further comprises a lid and a switch for detecting opening and closing of the lid, and wherein opening the lid resets the rechargeable pack such that current may be provided across the second connector when the lid is next closed after the foreign object has been removed.