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๐ Power your clean, own your spaceโno cords, no limits.
The Hoover ONEPWR 4.0 Ah Lithium Ion Battery is a high-capacity, rechargeable power source designed for all Hoover ONEPWR cordless products. Featuring 2X longer runtime and LED charge indicators, it offers fade-free, reliable performance for extended cleaning tasks. Lightweight and portable, it supports seamless battery swapping and comes with a 3-year manufacturer warranty, embodying Hooverโs century-long legacy of trusted home cleaning innovation.





| ASIN | B0C111RWF5 |
| Amperage | 4 Amps |
| Antenna Location | Vacuum Cleaner |
| Battery Capacity | 2 Amp Hours |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 1.27 Pounds |
| Best Sellers Rank | #135,021 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #97 in Vacuum Replacement Batteries |
| Brand | Hoover |
| Built-In Media | Hoover ONEPWR 4.0 Ah Lithium Ion Battery, BH29040V, Black |
| Customer Reviews | 4.3 4.3 out of 5 stars (297) |
| Global Trade Identification Number | 00073502524787 |
| Item Dimensions | 3 x 2 x 5 inches |
| Item Type Name | Hoover ONEPWR 20V 4.0Ah Battery |
| Item Weight | 630 Grams |
| Manufacturer | Hoover |
| Model Name | Hoover ONEPWR 20V 4.Ah Battery |
| Model Number | BH29040V |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Reusability | Rechargeable |
| UPC | 073502524787 |
| Unit Count | 1.0 Count |
| Voltage | 20 Volts |
| Warranty Description | 3 year manufacturer |
T**Z
Perfect replacement battery
I contemplated buying a new vacuum. Instead, I am glad I decided to order a replacement battery. It is identical to the original battery, charges quickly, and works well.
B**S
Works good
So far so good, lasts decently long and works like a 6amp
S**.
Better than the original.
Holds charge and gets me through the whole house without a charging break
M**.
Suitable replacement for the original battery that came with my vacuum
I had to order a replacement for my original battery, which after two years, had started to malfunction. This seems to be a suitable replacement. The only reason I gave it 4 stars instead of 5 is because I do wish these batteries held their power longer. I get about 10 or 15 minutes of vacuuming in before it starts to blink red for low power.
K**A
Nice backup battery
I always buy an extra battery for my cordless vacuums. My Hoover Lynx died after 8 years, but the 2 batteries were still giving me at least 10 min of vacuuming time. My new Hoover Evolve Elite battery gives me about 15-20 min of vacuum time, depending on whether I use it the whole time on high or not. The extra one I bought on Amazon does the same. I like the easy feature that allows you to check how much battery is left. The only downside is that this battery is expensive at $99, but the Hoover site is more. I can't help but compare the price to the Lynx batteries that were half that price. The charger is easy to use and I always have a battery ready to use, if needed.
M**K
Waste of money
I bought this battery in November 2025 and it's now February 2026 and it no longer takes a charge.
F**A
good product
When I buy a new battery operated device, I always buy another battery. If you are vacuuming, you don't want to stop and wait for the battery to recharge. If your battery operated flash light dies, you really need it at that time. Always buy an extra battery because 4 or 5 years down the line, the battery will probably not be available for purchase unless you buy from a specialty sight online and it will cost you twice as much!
C**E
Perfect
Iโm not sure if it was my old battery or the old charger that caused my problem but I fixed the issue by buying both. I almost threw the whole stick vacuum away and then decided to try this instead. Iโm glad I did. I love my little stick vacuum and this battery is great. Itโs a long lasting and fast charging.
D**F
Llego en tiempo, carga bien, en 1 hra.
R**S
tres eficace
R**T
I have several 4Ahr lithium batteries for the Hoover Blade vacuum system. It takes three of them to clean my entire house. And after awhile they will all start failing one way or another. This 8Ahr one came on sale so I tried it. This one will last for 24 minutes, which is far superior to my other batteries. Yes it weighs more, however it has to because of the additional cells in it.
H**R
Charges quick and I'm happy it appears to be lasting longer.
G**.
Very happy the battery works great
Trustpilot
1 month ago
2 weeks ago