This seems an odd offer of Kalkhoff ProConnect for spares on eBay. No wheels, battery and in quite a state with a stating price of £799!!! Selling for a friend. Looks like it a crash.
http://www.ebay.co.uk/itm/Kalkhoff-Pro-Connect-E-Performance-Series-/171639713040?ssPageName=ADME:SS:SS:GB:1120
http://www.ebay.co.uk/itm/Kalkhoff-Pro-Connect-E-Performance-Series-/171639713040?ssPageName=ADME:SS:SS:GB:1120