Specifications: Cell Type: Lithium-Ion (Li-Ion) 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; Built-in circuit protection ensures both safety and stability. Highest quality standards, Products are CE certified, tested by manufacturers to match OEM products, long-lasting performance, and durability. Perfect for the original Dyson charger. DC31 Type B battery Compatible Part Numbers: 917083-01, 967861-04, 17083-2811, 18172-01-04, 17083-4211, 17083-04, 202932-06 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