Charging and audio usage

1. A method comprising:

detecting, by an accessory including a first connector and a second connector configured to enable coupling to a user equipment, a charger being coupled to the first connector;

sending, based on at least the detected charger, an indication to the user equipment to change to a power receive mode;

detecting, by the accessory, the change to the power receive mode;

allowing, based on at least the detected change, power to flow from the first connector to the second connector;

detecting a loss of power provided by the charger; and

based on the detecting, providing a momentary source of power to the accessory from a capacitor power to the accessory when the loss of power occurs.

2. The method of claim 1 , wherein the indication comprises a message sent by the accessory via a digital interface of the accessory.

3. The method of claim 2 , wherein the detecting the change to the power receive mode comprises receiving another message from the digital interface of the accessory, and wherein the other message indicates a change in power mode.

4. The method of claim 1 , wherein the allowing further comprises: closing a switch to allow the power to flow from the first connector coupled to the charger to the second connector coupled to the user equipment.

5. The method of claim 1 further comprising: sending, based on at least the detected power loss, another indication to the user equipment to change to a power source mode.

6. The method of claim 1 further comprising: opening the switch to disable a connection to the charger and to allow the user equipment to supply power to the accessory via the second connector.

7. The method of claim 6 , wherein at least one diode is coupled to the second connector and the switch to prevent a current flow from a capacitor to the second connector and the coupled user equipment, wherein the capacitor provides the momentary source of power to the accessory when the loss of power from the charger occurs.

8. The method of claim 1 , wherein the accessory comprises a headset.

9. The method of claim 1 , wherein the first connector and the second connector comprise a universal serial bus connector, a Micro-B connector, a Type C connector, a dedicated charging connector, or a combination thereof.

10. An apparatus, comprising:

at least one processor; and

at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following

detect, by the apparatus including a first connector and a second connector configured to enable coupling to a user equipment, a charger being coupled to the first connector;

send, based on at least the detected charger, an indication to the user equipment to change to a power receive mode;

detect, by the apparatus, the change to the power receive mode;

allow, based on at least the detected change, power to flow from the first connector to the second connector;

detect a loss of power provided by the charger; and

based on the detecting, provide a momentary source of power to the accessory from a capacitor power to the accessory when the loss of power occurs.

11. The apparatus of claim 10 , wherein the indication comprises a message sent by the apparatus via a digital interface of the apparatus.

12. The apparatus of claim 11 , wherein the apparatus is further configured to at least receive another message from the digital interface of the apparatus, and wherein the other message indicates a change in power mode.

13. The apparatus of claim 10 , wherein the apparatus is further configured to at least close a switch to allow the power to flow from the first connector coupled to the charger to the second connector coupled to the user equipment.

14. The apparatus of claim 10 , wherein the apparatus is further configured to at least send, based on at least the detected power loss, another indication to the user equipment to change to a power source mode.

15. The apparatus of claim 10 , wherein the apparatus is further configured to at least open the switch to disable a connection to the charger and to allow the user equipment to supply power to the apparatus via the second connector.

16. The apparatus of claim 15 , wherein at least one diode is coupled to the second connector and the switch to prevent a current flow from a capacitor to the second connector and the coupled user equipment, wherein the capacitor provides the momentary source of power to the apparatus when the loss of power from the charger occurs.

17. The apparatus of claim 10 , wherein the apparatus comprises a headset.

18. The apparatus of claim 10 , wherein the first connector and the second connector comprise a universal serial bus connector, a Micro-B connector, a Type C connector, a dedicated charging connector, or a combination thereof.

19. A non-transitory computer readable storage medium including code which when executed by at least one processor causes operations comprising:

detecting, by an accessory including a first connector and a second connector configured to enable coupling to a user equipment, a charger being coupled to the first connector;

sending, based on at least the detected charger, an indication to the user equipment to change to a power receive mode;

detecting, by the accessory, the change to the power receive mode;

allowing, based on at least the detected change, power to flow from the first connector to the second connector;

detecting a loss of power provided by the charger; and

based on the detecting, providing a momentary source of power to the accessory from a capacitor power to the accessory when the loss of power occurs.