minicar: I was thinking about purchasing the rechargeable battery pack if the cable is not long enough. How long is the mini usb to usb cable that comes with the astro a40's. I am talking about the cable that charges mixamp. I also have a powerblock (usb wall charger) and would I be able to plug the usb cable into that and plug the powerblock into the wall and get power that way? Thanks for your answer!!!How long is the mini usb cable included with the astro a40's?about 4-5ft.