Neato XV series Replacement Batteries Extended 3800mAh (set of 2, NON-OEM) Replacement Battery Pack for Neato XV series(Set of 2. Non-OEM) Ture 3800mAh(original is 3200mAh) that will provide longer cleaning time, larger coverage per charging Compatible Models: XV-21, XV-Signature Pro, XV-Signature, XV-Essential, XV-15, XV-14, XV-12, XV-11