FLAGPOWER Rechargeable Li-ion Replacement Battery 22.2V 2000mAh for Dyson DC31 DC34 DC35 DC44(Not Fit Type B,DC44 MK2)917083-01 91708301 Handheld Vacuum Cleaner Li-ion battery, 2.0Ah Real Capacity, 22.2V Voltage, made with high quality 18650 cells Replacement Battery for Dyson 22.2V Type A battery: DC31, DC31 Animal, DC31 Animal Exclusive, DC34, DC35, DC45, DC44 ( Not Fit DC44 MK2 ). The battery pack will restore your Dyson vacuum to work like new original battery No memory effect. Can be charged or discharged as needed without loss of capacity Integrated microchip prevents overcharging & lengthens battery life & No memory effect 30 days money back, 12 month warranty!