Battery2go Li-ion BATTERY Pack Fits Dyson DC34, 917083-01, DC31 Animal, DC44, DC35, DC35 Exclusive, DC31 Capacity: 1500mAh / 33.3Wh Type: Li-ion Volts: 22.2V Size : 120.20 x 75.30 x 66.70mm Certificated with ISO9001, RoHS & CE