Intellect 2800 11.1v LiPo (KO Transmitter Pack)
 

Got my transmitter pack for sale from my KO Eurus which I've just sold, the pack is basically as new and its only had a couple of charges. It has a 3-Pin Futaba Male connector on the end and a JST-XH/Align type balance lead. While the battery is designed primarily for use with a KO Helios/Eurus it will also fit other radios that utilize a square rectangular battery pack.

Picture of actual battery forsale:
http://i35.photobucket.com/albums/d1...lipotxpack.jpg

£15 including postage.