Hi exbklyn,
Thanks for using Apple Support Communities.
For more information on this, take a look at this article:
iPhone: Hardware troubleshooting
http://support.apple.com/kb/ts2802
Important: Only original iPhone can be charged from a FireWire-based power source. If iPhone is connected to a computer that's turned off or is in sleep or standby mode, the battery may drain.
- Verify that the outlet being used is working.
- Try another USB power adapter if available.
- If no other USB power adapter is available, try connecting to a high-power USB 2.0 port (not a keyboard). The computer must be turned on and not in sleep or standby mode.
- Try another USB cable if available.
Best of luck,
Mario