Specifications: Cell Type: LithiumIon (LiIon) Battery Capacity: 4.8Ah Battery Voltage: 22.2V/21.6V Features: Charging at any time without memory effect, Integrated microchip prevents overcharging & lengthens battery life. No memory effect. Can be charged or discharged as needed without loss of capacity Grade A cells ensure fast charges and low power consumption; Builtin circuit protection ensures both safety and stability. Highest quality standards, Products are CE certified, tested by manufacturers to match OEM products, longlasting performance, and durability. Perfect for the original Dyson charger. Dc31 Type B battery Compatible Part Numbers: 91708301, 96786104, 170832811, 181720104, 170834211, 20293206 Compatible Model Numbers: Dc31, Dc31 Animal, Dc34, Dc35, Dc35 Type B, Dc35 Animal, Dc35 Exclusive, Dc44 Animal, Dc45 Package Included: 1 x Type B Dyson Replacement Battery