This is not a sponsored post. The battery I used is an off-brand. If your machine is still under warranty I suggest to contact Dyson first before you do what I did. By the way, I copied most of the specifications of this battery from the manual they sent to me.

SPECIFICATIONS:

Model no. : MI-DYV63A
Battery Type: Li-ion Rechargeable Battery
Nominal Voltage 21.6V
Capacity: 3000mAh
Charging time: 4-5 hours

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