HQRP Battery 4-Pack for Neato XV-11 All Floor Robotic Vacuum System, XV-12 XV-14 XV-15 XV-21 Vacuum Cleaner, 945-0005 205-0001 945-0006 945-0024 XV Signature Pro All-Floor Robotic Vacuum + Coaster HQRP&reg; Four Rechargeable Long Lasting Batteries plus HQRP&reg; Coaster; Battery Voltage: 7.2V; Capacity: 4000 mAh; Ni-Mh; 100% compatible with Original Battery; 200 Days warranty!