Play and charge your XBOX ONE controller at the same time. Venom's Twin Rechargeable Battery Packs charge two battery packs from just one USB cable meaning that frustrating mid-game power loss is a thing of the past. The two powerful rechargeable 700mAh battery packs provide maximum power for gameplay of up to 18 hours. Includes 2 metre split USB charging cable. Fully compatible with both the Official Standard Controller and Elite Controller.