2x Pack - Neato XV-21 Battery - Replacement for Neato Robotic Vacuum Cleaner Battery (3500mAh, 7.2V, NI-MH) Replacement Battery for Neato XV-11, XV-12, XV-14, 945-004, XV-15, XV-21, XV-25, 945-0048, XV Signature, XV Signature Pro Battery Capacity: 3500mAh, Voltage: 7.2, Type: Nickel-Metal Hydride Quantity: 2, One Year Warranty On Sale for a Limited Time! Grade A Quality. High Capacity.