You should see a typical pattern of "detected new USB device", followed by an invocation of 'bcharge' at least once to set the flow. What you're looking for is something after that pattern, but what exactly that is I don't know yet (just going on gut instinct at this point).

Do this: as root, do 'tail -f /var/log/messages', then hit ENTER a couple of times to clear the screen. Plug in your device and let the messages flow, then cut&paste everything from that window from where it started into the forum here (use the CODE + /CODE forums tags around it to protect the formatting).