I have a feeling it may have the capability of charging from the USB data bus as well as the extra "power pin" supplied by the mini-USB connector. And I think that extra "power pin" may be damaged in the phone's connector. I did take it apart and attempt to resolder the pads but it didn't make any difference.
One of these days I am going to try to make a special custom cable that will short the "power pin" with the other data pins so that I can charge the phone with an AC adapter. We'll see how it goes.
