I tried posting several times last night...
I tried posting several times last night but I got a server error message. Probably just as well as my problem cleared up by itself.
You see, I had plugged the iPhone dock into my PowerBook USB port never considering the effect of sleep mode.
After plugging into the wall directly my charge went way up, but still not quite all the way according to the usage guide.
I solved that problem by turning the phone off for a few hours, and that did the trick.
btw, surefire09's comments have me confused. Can you change the battery status indicator like a laptop? (icon, percentage, time?) If so, how?