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The Biswaye V8 Battery Replacement is a high-capacity 21.6V 4.5Ah lithium battery designed specifically for Dyson V8 and SV10 cordless vacuum models. Featuring premium international cells and an integrated microchip, it offers longer runtime, enhanced safety, and full compatibility with Dyson’s OEM chargers and devices. Certified to meet FCC, RoHS, and CE standards, this battery ensures reliable, energy-efficient performance for professional-grade cleaning.








| ASIN | B09DSTSXBC |
| Amperage | 4.5 Amps |
| Antenna Location | Vacuum Cleaner |
| Battery Capacity | 4500 Milliampere Hour (mAh) |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 1.39 Pounds |
| Best Sellers Rank | #51,514 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #18 in Vacuum Replacement Batteries |
| Brand | Biswaye |
| Built-In Media | Biswaye V8 Replacement Battery Replacement for Dyson V8 SV10 Battery |
| Customer Reviews | 4.3 4.3 out of 5 stars (4,510) |
| Item Dimensions | 5.12 x 3.54 x 2.76 inches |
| Item Weight | 1.2 Pounds |
| Manufacturer | CXAB |
| Model Name | V8 |
| Model Number | V8 |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Reusability | Rechargeable |
| Unit Count | 1.0 Count |
| Voltage | 21.6 |
A**N
Great replacement battery for Dyson V6
Works perfectly with my Dyson V6 and fits without any issues. Installation was quick and easy, no special tools needed. The battery holds a solid charge and lasts as expected. Suction power feels just like the original battery. Great value for the price compared to OEM replacements. Highly recommend if you need a reliable replacement battery.
D**H
Worth every penny
Over the past six to seven years, we have been thoroughly satisfied with our Dyson V10 vacuum cleaner. However, approximately a year ago, the battery began to deteriorate rapidly. Due to the high cost of Dyson vacuums, we have been forced to make do with the vacuum until a replacement battery becomes available. After conducting some research, I discovered that it was relatively straightforward to replace the battery in a Dyson vacuum. This made it an appealing option, and I decided to give it a try. The installation process was remarkably simple, requiring only three screws and eliminating the need for any wires. Once the battery was replaced, we were immediately impressed with the improved performance. The replacement battery provides significantly longer runtime, doubling the duration of the previous battery. Additionally, the battery’s performance is superior to that of the original Dyson battery. In conclusion, we are pleased with our decision to replace the battery rather than purchasing a new Dyson vacuum. This approach has proven to be a cost-effective solution that has allowed us to continue using our vacuum cleaner without interruptions.
B**E
Saved me the price of a New Dyson.
My Dyson was given to us for Christmas about 3 years ago. I love it. About 6 months ago the Dyson started exhibiting signs of a bad battery. It would pulse with use, and only work for a small time. You could squeeze the trigger to get it to go again but it got very tedious. I started looking for upgrades, but honestly did not want to fork over the cash for another vacuum at this time. I had this sitting in my cart for awhile and figured I'd give it a try before buying a new Dyson, worse case it was not the problem and I'd buy a new vacuum on Black Friday sale. Low and behold, it worked like a charm. My Dyson is fixed. It runs BETTER then it did on the old battery even when it was newer. TLDR: Pros- It works It works BETTER in some cases than the original. It's...pretty? Cons- It doesn't greet me when I come home personally. I can get over that, it's just a battery after all. Just the Tips: If you are having issues like I described above and really don't want to buy a whole new vacuum--try this fix first.
C**S
Battery died after 2 months
Battery worked okay at first. There was a half second delay between pulling the trigger and the vacuum starting. After about 2 months though, the battery stopped working completely. Just past the return window. Do not recommend buying.
H**O
Fine replacement for Dyson V6 (???)
As advertised. Dimensions, connection, and power strong. Fits like a glove.
D**5
Perfect replacement for a Dyson DC35!!
Our old Dyson DC35 has been giving us problems. Fully charged and it would run for a long time In normal power, but as soon as the “MAX” buttons was turned on it would run for about 10 seconds and stop. Searched the web and all kinds of suggestions and repairs, all pointed to the old vacuum was done!! Finally I found a help document that kind of pointed towards the battery not holding enough voltage and the Dyson shutting off to protect itself. So I searched to find the best priced, most affordable and highest rated battery. Those was made even better by the fact that I have had great luck in the past with Biswaye batteries for my power tools. I pulled the trigger and took a chance, glad I did!! This battery is super easy to install, just push the button and pull out the old and slide in the new. This battery is an exact fit for the Dyson DC35 vacuum. A Great value at around $27!!! If your existing battery is giving you similar issues, then this battery will fix your problem. Have had it for about 10 days now and it works great. Holds a great charge. Well worth the money. Definitely recommend for your Dyson DC35
H**A
Great value and easy to install!
Worked perfectly. Installed it in less than 5 minutes. Great value in that my wife was ready to buy a new one. Thanks!
C**N
Very good price
Very good price ! Fit in my Dyson stick perfectly .
D**Y
Unfortunately I was away and couldn’t test it and then the return window had expired. It worked once but can’t be charged.
A**R
Removing the battery from my unit revealed it was a DC 35 B. Important for people to know there is an A and B type of DC 35. A snap to install. Charged up and it’s like a new vacuum. This unit was a pass off from my daughter and had little capacity. I bought this battery and a new floor head which is not powered. It works great on our tile and hardwood. Can now vacuum pretty much all of the main floor, including baseboards without the unit shutting off. Impressive!
H**8
Our Dyson battery failed. My brother in law had the same issue + found this...a perfect fit + WAY LONGER LASTING than the OEM. This is for the hand held cordless vac, but remove yours first to look at the top of the battery shape so you get the correct one, 2 screws. This is the battery Dyson, for the price, should have come with!!
S**)
A Dyson customer service agent advised me that a replacement battery for a DC57 handheld vacuum is no longer in production, but I was given the option to use the replacement battery for a DC45. I took the chance, and was very happy that I did, because the battery works, and now my DC57 vacuum can again be used, instead of it being in the recycling bin.
L**O
Permets de donner une deuxième vie à un aspirateur Dyson. Je m’attendais à une performance moindre que l’original, mais c’est le contraire. Elle est plus puissance, tellement que l’aspirateur colle un peu au plancher. L’aspirateur dégage aussi légèrement plus de chaleur. Faire attention de choisir le bon modèle, il y a deux modèles similaires. Il vaut mieux enlever la batterie d’origine pour comparer avec la photo du produit. Au final, très très satisfait ! — Give a Dyson vacuum a second life. I was expecting a lesser performance than the original, but it's the opposite. It's more powerful, so much so that the vacuum cleaner sticks a bit to the floor. The vacuum cleaner also gives off slightly more heat. Be careful to choose the right battery model, there are two similar models. It is better to remove the original battery to compare with the product picture. In the end, very very satisfied!
Trustpilot
4 days ago
2 days ago