Battery Charging icon not showing up in iTunes

I have a brand new iPod Classic 120GB. My wife has an iPod Nano 3rd Gen 4GB. When she connects her Nano to my MacBook Pro (Leopard w/iTunes 8), she has a little battery charging icon next to the sync and eject icons in iTunes. However when i connect my iPod Classic 120GB i don't have it. I would assume my software would be identical OR newer. I have version 2.0 and she has version 1.1.3, both Mac formatted.

This isn't a major deal, but i kinda like that icon and i'm just curious why it's not showing with my newer one. I've try both her and my sync cables, both work fine and don't change a thing icon wise.