Excellent price IMO, haven't seen it as cheap as this for a while. Free next day delivery via RM. Official MS kit.
"Xbox 360 Elite Play and Charge Kit
Recharge your Xbox 360 Wireless Controller while you play
Play & Charge Cable enables continuous game play
Battery offers 25 hours of play per charge
Battery fuel gauge through the Xbox 360 dashboard
Includes Play & Charge Cable and NiMH rechargeable battery pack "