Dyson V8 Absolute Non-Original Battery Is It Worth the Money?
Overview
This review covers my experience replacing the battery on my Dyson V8 Absolute, a vacuum that's been part of my cleaning setup for quite a while. What triggered this? The charging pin broke, and the vacuum stopped working altogether.
As someone who shares a home with a free-range bird and a rabbit (aka: professional mess-makers), this wasn't just inconvenient, it was urgent. Instead of rushing to buy a brand-new vacuum (which I'll admit, I was kind of tempted to do), I decided to try a third-party battery replacement and see if it could bring the V8 back to life.
In this review, I'll share the full story: from what I bought and why, to what happened when I installed it, and whether it actually worked.
Product Description
This is a third-party, non-original replacement battery for the Dyson V8 Absolute. Both batteries look nearly identical, including the presence of an LED indicator on both sides.
Technically, this battery runs at the same 21.6V and delivers 3,000mAh at 64.8Wh (compared to 2,800mAh and 65Wh on the original Dyson battery), putting its output essentially on par with the original.
The original Dyson battery includes a more detailed label with certifications and warnings, though most users likely won't read this information, or know what to do with it unless specifically required.
Specifications
Battery Specifications
| Battery Type | Lithium Ion Rechargeable Battery |
| Voltage | 21.6V same voltage as the original Dyson battery |
| Capacity | 3,000mAh vs. 2,800mAh on the original Dyson battery |
| Energy | 64.8Wh vs. 65Wh on the original Dyson battery, nearly identical output |
| Certifications | FCC, CE, WEEE, Li-ion |
Inside the box
Pros
Price – The battery costs half to a third of the original Dyson battery, depending on the region. For anyone looking to save money without compromising on performance, this is a very budget-friendly alternative.
Design – The design is nearly identical to the original, with a matching shape, color, and connectors. Once installed, it’s hard to notice any difference. Just like the original, it includes three blue LED lights that display the remaining battery power.
Vacuum Performance – The vacuum performs just as well with this battery. There’s no reduction in suction power or responsiveness. For daily use – short cleaning sessions throughout the day – it works smoothly and without issues.
Battery Life – So far, the battery holds a charge impressively well. It doesn’t drain quickly, and it seems to deliver its true rated capacity, based on both the usage time and the LED indicator lights. I genuinely hope this performance holds up over time and repeated charging cycles — and that the battery won’t start degrading too soon, as can sometimes happen with non-original units.
Pros
Price The battery costs half to a third of the original Dyson battery, depending on the region. For anyone looking to save money without compromising on performance, this is a very budget-friendly alternative.
Design The design is nearly identical to the original, with a matching shape, color, and connectors. Once installed, it's hard to notice any difference. Just like the original, it includes three blue LED lights that display the remaining battery power.
Vacuum Performance The vacuum performs just as well with this battery. There's no reduction in suction power or responsiveness. For daily use (short cleaning sessions throughout the day) it works smoothly and without issues.
Battery Life So far, the battery holds a charge impressively well. It doesn't drain quickly, and it seems to deliver its true rated capacity, based on both the usage time and the LED indicator lights.I genuinely hope this performance holds up over time and repeated charging cycles, and that the battery won't start degrading too soon, as can sometimes happen with non-original units.
Cons
Not an Official Dyson Product This battery is third-party and not manufactured or endorsed by Dyson. It might technically affect warranty coverage, though in practice, it's unlikely Dyson could verify or enforce that, especially once the battery is already installed.
No Documentation or Identifiable Branding The battery arrived in a plain cardboard box, without any manual, branding, or instructions. I purchased it from a store with strong feedback, which gave me confidence, but aside from a small sticker on the battery, there's no clear product information. That's something to be aware of, especially with products like batteries that must meet safety standards.
Some Third-Party Batteries Advertise Better Price-to-Capacity Ratios While searching for a replacement battery, I came across many non-original brands, often unfamiliar, offering significantly larger advertised capacities at similar prices. On paper, these seemed like better value for money, but I had concerns about actual performance, added weight, and long-term reliability. It's something worth exploring, but with caution.
Overall Verdict
Since the vacuum was no longer new and out of warranty, buying a non-original battery felt like the more sensible choice, especially given how expensive genuine Dyson batteries are.
Swapping the battery is an easy job, you just need a screwdriver to open it up. My video walks through the whole process pretty clearly.
Performance was solid from day one: the design matches the original, and daily use didn't reveal any issues. The real question at the time was whether it would hold its capacity after months of regular use and recharging. Over a year later, I can say it has, with no meaningful difference compared to the original Dyson battery.
As much as I want to give Dyson credit for an excellent vacuum (and their products in general), there's no real reason to prefer the original battery over a non-original one in this case. The money saved is significant, and if genuine batteries were more reasonably priced, the choice would've been harder, but given the high cost of official replacements, this was a risk worth taking.
As for the downsides: this isn't an official Dyson product, and it arrived with no documentation or identifiable branding, something worth being aware of with a product like a battery that needs to meet safety standards. While researching, I also came across other third-party batteries advertising larger capacities at similar prices, though I had concerns about their actual performance and long-term reliability. As always, if anything changes with this battery, I'll update this post.
A reliable, budget-friendly alternative to the original Dyson battery. I highly recommend it for anyone with an out-of-warranty V8, as long as you buy from a seller with a solid track record, given the lack of official documentation or branding.
Photos
Where to buy
Below are the links to purchase a replacement battery for the Dyson V8 Absolute (non-original):
User Manual
User Manual Not Available
The product wasn't supplied with any user manual.
FAQ
Do you need to remove the dust cup to access the battery?
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