Going back to the original post here... It would seem it's an ideal device for me. My MP3 player, my phone, and my spanky new Cybook are all powered by USB. So with one of those things then if any of them ran low, I could charge them back up.
Something else I'd need to snag is Gomadic tips for the phone and the Cybook.
I have a Gomadic USB cable, and power adaptor, plus a charge only and a charge/connect tip for the X5L, I don't have them for the D900 or Cybook....
But if I did then I'd have.
Phone, X5L, Cybook, Extended power pack, One wall charger. One USB cable. Which would be rather neat.
Guess I'll be ordering one of these next time I'm in the states