SANCC&trade; 2 Pack 7.2V 4000Mah Neato XV Series Replacement Battery for Neato XV-11, XV-12, XV-14, XV-15, XV-21, XV-25, XV Essential, XV Signature and XV Signature Pro Battery Type:Nimh, Voltage:7.2V, Capacity:4000mAh High quality replacement battery For Neato XV Series Battery High capacity Long Lasting battery for your Neato Robotics No memory effect. Can be charged or discharged as needed without loss of capacity 30 days money back and 1 Year Warranty