Amazon.com: ARyee 22.2V 4.0Ah DC35 Battery Replacement for Type A DC31 DC31DC34 DC44 Animal 917083-01 17083-2811 18172-01-04 17083-4211 Handheld Vacuum (Not fit All Type B Model, DC44 MK2) : Home & Kitchen
Amazon.co.uk:Customer reviews: Dyson DC31 Handheld Vacuum with Dual Power Mode (Latest Generation)
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