Apparatuses and methods that facilitate the transfer of power and information among electrical devices

1. An apparatus that facilitates the charging of a first battery powered device and a second battery powered device, comprising:

a first port that electrically couples the first battery powered device to the apparatus;

a second port that electrically couples a second battery powered device to the apparatus;

a third port that electrically couples a third device to the apparatus; and

a microcontroller that:

prevents a battery of the first device coupled to the first port from supplying power to a battery of the second device coupled to the second port when it is determined that the first and second devices are coupled to their respective first and second ports, but the third device is not coupled to the third port, and the first device is capable of supplying power to the second device;

selecting one of at least two communications modes for the second device when the second device is determined to be coupled to the second port; and

enables the first port to supply power to the second port when the first, second, and third devices are coupled to their respective first, second, and third ports, wherein a voltage level of a power signal provided to the second port is controlled based on the selected communications mode.

2. The apparatus of claim 1 , wherein the first device is a cellular telephone.

3. The apparatus of claim 1 , wherein the first device is an media player.

4. The apparatus of claim 1 , wherein the first port is a 30-pin connector.

5. The apparatus of claim 1 , wherein the second device is wireless headset that is used with a cellular telephone.

6. The apparatus of claim 1 , wherein the microcontroller facilitates a transfer of information between the first and second devices.

7. The apparatus of claim 1 , wherein the microcontroller facilitates a transfer of information between the second and third devices.

8. The apparatus of claim 1 , wherein the microcontroller facilitates a transfer of information between the first and third devices.

9. The apparatus of claim 1 , wherein the third port receives a USB cable that couples the apparatus to the third device, wherein the third device is a computer.

10. A method that facilitates the charging of at least one battery powered electrical device using an apparatus comprising a first port, a second port, and a third port, the method comprising:

determining whether a first device, second device, or third device are electrically coupled to respective first, second, and third ports;

selecting one of at least two communications modes for the second device when the second device is determined to be coupled to the second port;

preventing a battery of the first device coupled to the first port from supplying power to a battery of the second device coupled to the second port when it is determined that the first and second devices are coupled to their respective first and second ports, but the third device is not coupled to the third port, and the first device is capable of supplying power to the second device; and

enabling the first port to supply power to the second port when the first, second, and third devices are coupled to their respective first, second, and third ports, wherein a voltage level of a power signal provided to the second port is controlled based on the selected communications mode.

11. The method of claim 10 further comprising facilitating a transfer of information between the first and second devices.

12. The method of claim 10 further comprising identifying the third device as a device that has access to a continuous source of power.

13. The method of claim 10 further comprising identifying the third device as being a USB cable to a computer.

14. The apparatus of claim 1 , further comprising:

a switch having first, second, and third inputs, the first input coupled to the third port, and an output coupled to the second port;

a boost coupled to the second input of the switch and the first port; and

a regulator coupled to the third port, the boost and the third input of the switch.

15. The apparatus of claim 14 , wherein the microcontroller is operative to select the second input when the first, second, and third devices are coupled to respective first, second, and third ports, and the selected communications mode is a first communications mode.

16. The apparatus of claim 14 , wherein the microcontroller is operative to select the third input when the first, second, and third devices are coupled to respective first, second, and third ports, and the selected communications mode is a second communications mode.

17. The method of claim 10 , wherein the voltage level of the power signal provided by the first port is controlled by boosting the voltage level to a boosted voltage level, wherein the boosted voltage level has a higher voltage level than the voltage of the power signal provided by the first port.

18. The method of claim 17 , wherein the voltage level of the power signal provided by the first port is further controlled by regulating the boosted voltage level to a regulated voltage level, wherein the regulated voltage level is lower than the boosted voltage level but higher than the voltage level of the power signal provided by the first port.

19. The method of claim 18 , wherein the regulated voltage level is provided to the second port when the selected communications mode is a first communications mode and wherein the boosted voltage level is provided to the second port in a when the selected communications mode is a second communications mode.

20. The method of claim 10 , further comprising: assigning priorities to the first, second, and third ports.

21. The method of claim 10 , wherein one of the communications modes is a USB mode.

22. The method of claim 10 , wherein one of the communications modes is a serial mode.