Any iPod 30-pin chargers (usb or AC) with 30-pin PASS THRU?

[ADent]

There are a couple of battery packs with the 30 pin connector (which Apple actively discourages). The $20.75 MonoPrice does this ( http://www.monoprice.com/products/product.asp?c_id=108&cp_id=10831&cs_id=1083110&p_id=5866&seq=1&format=1#largeimage ).

Something like this is what you want: http://www.lightinthebox.com/Charge-Dock...70072.html .