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Dyson V8 Vacuum Battery Replacement 21.6V 6500mAh 140Wh

Dyson V8 Vacuum Battery Replacement 21.6V 6500mAh 140Wh

Best price now

$19.99at AmazonChecked 4 h ago

60% under what the other stores charge

Compared across 3 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Price facts

  • Lowest price today: $19.99 at Amazon (checked Nov 12, 2026).
  • Checked at 3 stores.

Our take on the Dyson V8 Vacuum Battery Replacement 21.6V 6500mAh 140Wh

This is a third-party replacement battery for Dyson V8 cordless vacuums, sold under the BatPower name. It is a 21.6V lithium-ion pack rated at 6500mAh (140Wh), roughly two and a half times the capacity of the original 2600mAh V8 battery, so it should run noticeably longer per charge. It fits the full V8 range, including Absolute, Animal, Motorhead, Fluffy and Carbon Fiber, and works with the standard Dyson V8 charger. The trade-offs are the usual ones for extended packs: more weight in the hand and the question of how well a non-Dyson cell holds up over years of cycles.

Best forV8 owners whose original battery no longer holds a chargeLarge homes needing longer runtime per chargeKeeping an older V8 out of the trash
Pros
  • Much higher capacity than the stock V8 pack
  • Fits every V8 model and the original charger
  • Safety tested to UL, CE, FCC, MSDS and UN38.3
  • Direct replacement for common V8 part numbers
Cons
  • Heavier than the original battery in the hand
  • Third-party cells may not match Dyson's longevity
  • High-power mode still drains it fast
  • Needs periodic charging when stored

Dyson V8 Vacuum Battery Replacement 21.6V 6500mAh 140Wh prices at every store

  • BatPowerNew

    In stockReturn policy

    $52.99Checked 2 h ago
    Visit BatPower
  • LaptopbatteryshopNew

    In stock

    $49.51+ $9.94 shippingChecked 3 h ago
    Visit Laptopbatteryshop
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $19.99Checked 4 h ago
    Visit Amazon

Store links may earn us a commission.

Dyson V8 Vacuum Battery Replacement 21.6V 6500mAh 140Wh price history

Lowest price we've seen: $19.99 on Nov 12 at Amazon. Tracked across 2 stores since Nov 12.

From BatPower

  • 21.6V 6500mAh (140Wh) extended capacity replacement battery
  • Compatible with Dyson all V8 vacuums and battery chargers
  • Replaces Dyson V8 batteries 967834-08, 967834-05, DY-967873403, DY-96783405 and more
  • Fits V8 Absolute, V8 Animal, V8 Motorhead, V8 Fluffy and V8 Carbon Fiber models
  • Guaranteed fitment
  • Safety tested to UL, CE, FCC, MSDS and UN38.3 standards
Care
Charge at least once every 3 months if unused; avoid constant high power mode; recharge promptly after full discharge; let it cool a few minutes before rechargi
Guarantee
18 months warranty; sold by BatPower Direct only.
Returns
30 days refund.
Shipping
Free shipping on all orders; delivery to US and international addresses via UPS or USPS; orders usually fulfilled within 7 business days.
Packs
1-pack and 2-pack V8 battery options.
In the box
Battery, Instruction manual

About the Dyson V8 Vacuum Battery Replacement 21.6V 6500mAh 140Wh

This is a 21.6V, 6500mAh (140Wh) extended-capacity replacement battery from BatPower for Dyson V8 cordless vacuums. It also works with Dyson V8 battery chargers. It replaces Dyson V8 batteries such as 967834-08, 967834-05, DY-967873403 and DY-96783405.

It fits V8 Absolute, V8 Animal, V8 Motorhead, V8 Fluffy and V8 Carbon Fiber models. The battery is safety tested to UL, CE, FCC, MSDS and UN38.3 standards.

To help the battery last, charge it at least once every 3 months if you aren't using it. Avoid constant high power mode, and recharge promptly after a full discharge. Let it cool for a few minutes before recharging. Don't run the vacuum with the battery flush against a surface. Store it clean and dry at room temperature (70°F/20°C), away from heat and metal objects.

Voltage
21.6V
Capacity
6500mAh
Energy
140Wh
Compatibility
Dyson V8 vacuums and battery chargers
Models
V8 Absolute, V8 Animal, V8 Motorhead, V8 Fluffy, V8 Carbon Fiber, including Pro, Plus, Exclusive, Origin, Cordless HEPA and Cord-Free versions
Replaces
967834-08, 967834-05, DY-967873403, DY-96783405 and more
Safety testing
UL, CE, FCC, MSDS, UN38.3
Storage
Dry, clean, away from heat and metal objects, at room temperature (70°F/20°C)
In the box
Battery, instruction manual

Specifications

Voltage
21.6V
Capacity
3000mAh
Cell Type
Li-ion

Questions and answers

Will it fit my V8 Absolute or V8 Animal?
Yes. It is listed as compatible with all V8 models, including Absolute, Animal, Motorhead, Fluffy and Carbon Fiber, and replaces the common V8 battery part numbers.
Can I use my existing Dyson V8 charger?
Yes. It is designed to work with the standard Dyson V8 battery chargers, so no new charger is needed.
How much longer will it run than the original battery?
The pack is rated 6500mAh against the original V8's 2600mAh, so expect substantially longer runtime per charge, though real results depend on tool and power mode.
Does it make the vacuum heavier?
Yes, somewhat. A higher-capacity pack adds weight at the handle, which is most noticeable when vacuuming overhead or for long stretches.
What is in the box?
The battery and an instruction manual. The vacuum, charger and tools are not included.
How should I store it if I don't use it often?
Charge it at least once every three months, avoid leaving it fully discharged, and let it cool briefly after a full drain before recharging.
Where is the Dyson V8 Vacuum Battery Replacement 21.6V 6500mAh 140Wh cheapest?
At Amazon, for $19.99, 60% under what the other stores charge, as of our latest check.
Where can I buy the Dyson V8 Vacuum Battery Replacement 21.6V 6500mAh 140Wh?
3 stores we checked sell it, including BatPower, Laptopbatteryshop, Amazon.

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