DOWNLOAD THE APP
Customer Services
Copyright © 2025 Desertcart Holdings Limited
DOWNLOAD THE APP
🔋 Power Up Your Projects with 3X the Runtime — Don’t Get Left in the Dust!
This 2-pack of 20V Max 4000mAh lithium-ion replacement batteries is engineered for Black & Decker cordless power tools, delivering 3X longer runtime and 20% more power than standard batteries. Featuring advanced safety protections and broad compatibility with popular Black & Decker models, these batteries ensure your tools stay charged, safe, and ready for any job.
| ASIN | B0BY29X88N |
| Batteries | 2 AA batteries required. (included) |
| Best Sellers Rank | #101,441 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #975 in Cordless Tool Battery Packs |
| Customer Reviews | 4.4 4.4 out of 5 stars (844) |
| Date First Available | March 11, 2023 |
| Item Weight | 1.63 pounds |
| Item model number | B |
| Manufacturer | Bonacell |
| Product Dimensions | 5 x 3 x 3 inches |
M**F
Works well enough for my B&D Drills, skill saw, and jiggle saw.
Seems good. They take a charge and work. They put out the same power, but have not measured the extra amp hours. I have multiple tools that take this battery. Only one of my drills needs a bit of force to seat the battery vs a legit B&D battery.
D**G
Long lasting power
Excellent. I use these with the Black and Decker vacuum to give long life. Does take a bit longer to charge but a these 4000mAh batteries allow me to vacuum the whole house easily with one battery on a mid setting for the B&D stick 20v floor vacuum.
J**P
Great batteries
The batteries charged in about two hours and lasted for a little over two hours. Have a lot of power. The price was spot on.
D**A
Not 3500 mAh! Great value, but battery is not that size.
I have a Black and Decker weed wackier. It about 5 years old. I hated waiting an hour or so for it to recharge. So I bought this set. My 5 year old battery is 1500mAh. I charged up both the ones and old batteries, started a timer, and went to work. The old battery lasted 13 minutes and the new battery lasted 15 minutes. If this is a 3500mAh battery it should have lasted at least twice as long. Maybe ever three times as long since the old battery is…a….old;)
J**4
Good value for replacement batteries
I own several Black & Decker battery-powered tools -- trimmer, blower, reciprocating saw, hedge trimmer and drill -- and have rotated three of the 20V batteries to power the tools. The battery live was noticeably shortening on two of the batteries this summer. So I decided to purchase this replacement 2Pack. I have mainly used the trimmer and blower frequently for maybe 10 years, so no complaints about the longevity of the old batteries. The new batteries have worked fine so far. If they last as many years as the old batteries, I will be happy.
C**E
Great price and perfect fit
Great replacement
D**6
These are cheap for a reason (because they’re terrible)
This is a terrible battery. I charged it for several hours thinking it should be decently charged and both batteries died within I’d say about 3-5 mins. I then decided to put them back in the charger and try again the next day, but I again had them die within close to the same amount of time as the day before. Avoid these poorly maxed batteries!
S**N
Quality
Last long time.
Trustpilot
2 weeks ago
1 week ago