Flylinktech Replacement for Dyson 22.2v 2000mAh Extended Battery for Dyson DC31 DC34 DC35 DC44(Type A,Not fit Dyson Type B) 917083-01 Handheld Vacuum Professional Replacement dyson DC31Battery,Not Original.30 days money back.All batteries have past FCC certification Battery Type: Li-ion, Voltage: 22.2V, Capacity: 2000mAh. Replacement battery for Dyson DC35 DC44 DC31 DC34 type A vacuum cleaner (except DC31 34 35 DC44 type B).Please check the connecter of your original dyson battery. It's type A, not type B. Compatible with 917083-01, 17083-2811, 18172-01-04, 17083-4211, 18172-0201, 917083-03. Kindly Note: DO NOT Fit DC34 Animal, Not fit the Part #: 17083-04, NOT fit Dyson Battery Pack 6-Cell (Type B). Keep the battery Clean before charge,store it in a clean, dry, cool place away from heat and metal objects. Don't leave the battery dormant for long periods of time,We recommend using the battery at least once every two to three weeks.Ni-Cd, Ni-MH and Li-ion batteries will self-discharge during storage,remember to recharge the batteries before.Any problems ,please contact us first!