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BTRUI
BTRUI for Dyson V8 Battery Adapter

BTRUI for Dyson V8 Battery Adapter

Best price now

$35.75at eBayObserved at 3:27 PM

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Our take on the BTRUI for Dyson V8 Battery Adapter

The BTRUI adapter lets you run a Dyson V8 vacuum on Milwaukee M18 18V lithium-ion batteries instead of Dyson's own pack. It is a small ABS plastic part that slots between the M18 battery and the V8's battery bay, so you keep the vacuum and swap the power source. At $35.75 on eBay as of November 5, 2026, it is the only new price listed, so there is no recent range to compare against. It is a niche fix for people who already own M18 tools and a V8 whose battery has died.

Best forOwners of Milwaukee M18 batteries with a dead Dyson V8Dyson V8 owners who want to avoid buying a new Dyson batteryPeople already in the Milwaukee tool ecosystemBudget repairs of an older V8 Animal or Fluffy
Pros
  • Reuses M18 18V packs you may already own
  • Cheaper than a genuine Dyson V8 replacement battery
  • Simple push-on fit, no wiring or tools
  • Keeps an otherwise working V8 out of the trash
  • Compact ABS body, about 0.43 kg
Cons
  • Adds bulk and weight to the handle
  • M18 packs are larger than Dyson's own battery, so balance changes
  • Third-party part, not endorsed by Dyson or Milwaukee
  • No charge-level display on the vacuum; you rely on the M18 pack
  • Single-unit listing with only one store price

BTRUI for Dyson V8 Battery Adapter prices at every store

  • eBayNew

    In stockSold by skateshark

    $35.75Free shippingObserved at 3:27 PM
    Visit store

BTRUI for Dyson V8 Battery Adapter price history

Lowest price we've seen: $35.75 on Nov 5 at eBay. Tracked across 1 store since Nov 5.

Specifications

Compatible with
Milwaukee M18 18V Lithium-ion
Dyson model
V8
Material
ABS
Accessory Type
Battery Adapter
Compatible Brand
Dyson
Compatible Model
M18
Compatible Vacuum Type
Vacuum Cleaner, Handheld Vacuum
Compatible Series
Animal
Battery Type
Lithium Ion
Voltage
18 Volts
Count
1.0 count
Use
Dry vacuuming
Application
Convert To For Dyson V8 Animal Fluffy Motorhead Handheld Vacuum
Reusability
Single Use
Height
4.13 Inches (Package Dimensions)
Length
13.27 Inches (Package Dimensions)
Color
Black
Weight
0.43 Kilograms
Style
For Milwakee To V8
Set
No

Questions and answers

Will this adapter work with any Milwaukee M18 battery?
It is built for Milwaukee M18 18V lithium-ion packs. Larger high-capacity M18 packs fit but add noticeable weight to the handle.
Does it fit all Dyson V8 models?
It is listed for the V8 line, including Animal, Fluffy and Motorhead handheld vacuums. Check your model's battery bay shape before buying.
Do I still need the original Dyson battery?
No. The adapter replaces the Dyson pack and feeds the vacuum from the M18 battery instead.
Will the vacuum still show battery level?
No. The V8's own battery gauge does not apply to the M18 pack, so watch the charge indicator on the Milwaukee battery.
Is $35.75 a good price?
It is the only new price listed as of November 5, 2026, at eBay, so there is no recent range to judge it against. Compare it with the cost of a genuine Dyson V8 battery before deciding.
What is in the box?
One black ABS adapter. Battery and vacuum are not included.
Where is the BTRUI for Dyson V8 Battery Adapter cheapest?
At eBay, for $35.75, as of our latest check.