Tom, does this mean that when the iPod is left connected to the DICE unit and is not used for a while (days, weeks) that it will lose its charge? My 6th generation Classic was completely drained the other day and it had been attached to the DICE unit the whole time, although I had not used it for several days. This never happened with my older (non-USB charging) iPod. Is there a difference between the way USB-charging and non-USB charging iPods behave in this respect, or is there something wrong with my DICE or cable? Thanks.