Powerextra Dyson DC44 Type B Replacement Battery 22.2V 2200mAh Compatible with Dyson DC31 DC35 DC44 DC45 Type B Series Dyson DC44 MK2 Cordless Vacuum Battery 22.2v,2200mAh Type B Dyson replacement battery for Dyson DC43H DC44 Animal Type B Handheld, compatible with Dyson DC31,DC35,DC44, DC45 Type B series cordless vacuum Note:This is the Type B screw in battery and will NOT work with the Motor that takes the Snap in style battery. Please make sure you have the Screw in type B battery and motor combo. Li-ion battery pack, high quality battery cell LG18650, fade-free power for max runtime No memory effect. Can be charged or discharged as needed without loss of capacity 30 days money back and 12 month limited guarantee