








🔋 Power your productivity with confidence — never get caught powerless again!
This Dutyone 4000mAh 20V lithium-ion replacement battery is engineered for Black & Decker cordless tools, offering a robust 20V output and long-lasting 4.0Ah capacity. It features advanced safety protections and compatibility with original chargers, ensuring reliable performance and up to 500 recharge cycles. Backed by 15 months of quality service, it’s the smart, cost-effective upgrade for professionals who demand uninterrupted power.



| ASIN | B082KHDQKG |
| Batteries | 1 Nonstandard Battery batteries required. (included) |
| Best Sellers Rank | #503,686 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4,492 in Cordless Tool Battery Packs |
| Customer Reviews | 4.4 4.4 out of 5 stars (634) |
| Date First Available | December 9, 2019 |
| Item Weight | 13.4 ounces |
| Manufacturer | Dutyone |
| Package Dimensions | 5.04 x 3.62 x 2.64 inches |
M**I
Fits and works properly
I got this battery to replace my Black & Decker cordless drill battery and it fits perfectly and it works just like it’s supposed to like it’s the original battery. I would definitely recommend this battery for the price if you need a replacement.
J**N
Solid Replacement
This replacement battery is a great value option for my Black and Decker tools. A original replacement battery was about 5x more than this. It fits perfectly and holds a charge well.
J**S
Could have been better
**Update** After writing this, Alan from the seller contacted me and asked if I wanted a full refund. With excellent customer service like this, I rate the transaction as superior.*** This fits and operates well but I am disappointed with relative longevity of the battery in operation. I have a vacuum which seemed to last long at first but after 3 months it fails to complete the same tasks that the original battery did. Considering that this has greater amperage, it is a disappointment.
B**E
Charge it
Charged and have used one time in my weedeater. Started of very powerful but died down fairly quickly. May need to fully charge again before charge starts to take hold. Nice quality made product. Will serve well as back up.
N**N
Good
So far so good, holds a charge and works well
B**L
Works great
Perfect replacement
M**A
Don’t buy
Do not buy!! Only lasts a few minutes then dies. Save your money
N**Z
Great
Love it bought two
Trustpilot
3 weeks ago
1 week ago