[pjjohnsen]

2nd post from me:
I run my h10 at work with a spare (OEM) usb cable.
I found the following trick helps to charge the h10 faster
if you are listening while charging (when only usb charging):

1) set everything up so that you are listening as you want
(album or playlist, volume, etc.)

2) unplug the usb cable for "N" seconds, "N" being the # of seconds
that you have your back-light timer set for (see settings menu->timer).
h10 screen will go dark.

3) plug the usb back-in (don't touch anything else), the screen will remain
dark (saving the screen and the charging LED is on 95% of the time vs. 50%).

If you need to change anything, the screen is re-lit and you have to repeat
steps 1-3. So only applicable if you are listening to a decent size album
or playlist.

Of course, this is less efficient than charging via ac-dc power adapter
as a USB slot only provides .5A max (vs. the 2A from the adapter).