Powerextra Power Tool Cordless Vacuum Replacement Battery for Shark XBT800 (10.8v 3000mAh NICD) Compatible Model:Sv800, Sv800c, Vx63 Voltage: 10.8v Capacity: 3000mah (original is 1800mah) / Extended Running Time High quality cells that meet or exceed original OEM specification. 100% Compatible with 10.8V Shark XBT800 battery Powerextra products are CE & RoHS certified tested by manufacturer more safety and stability 30 Days Money Back 12 Months Limited Guarantee!