I just received my 160GB iPod Classic and discovered it will charge fine when connected to a USB port (computer or hub), but not when connected to my Boxwave Wall-plug/USB or Car/USB adapters. My iPod 5.5G 80GB powers just fine with these adapters. I do not (as of yet) have an Apple USB Power adapter. Is this difference somehow related to the A/V out change in the Classic? Does the Classic perhaps require more current than the adapters can provide?