Although no separate charging cable lies, but adapts the original charging cable from touch in the mini-USB port. So you can load its 2nd battery without any problems while you are traveling with the other.
Of course you can also upload at the same time as a second charging cable rating and spare battery, which makes a lot of times to a more flexible;)
Perhaps even more interesting, but not necessary for me function: The music can be (shaky Bissel) at the front discernible edge vertical and especially einseten horizontally, which can be quickly and easily converted into a clock / a Regaluhr (in combination using "table clock" (Alarm clock, the last rider ... possibly only available from ICS).