http://www.pearl.de/product.jsp?pdid=PE4476 seems to be the battery box.
http://www.pearl.de/product.jsp?pdid=PE5619 seems to be the cable.

A better cable would seem to be:

http://www.usbtech.co.uk/catalog/pro...roducts_id/215

This should mean fewer adapters, but 1m long is a bit hefty.

http://www.revealcable.co.uk/acatalog/USB_Couplers.html is a female-to-female coupler.