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๐ Stay charged, stay unstoppable with Biswaye 20V Power Duo!
The Biswaye 4.0Ah 20V Lithium Battery (2-pack) is a premium replacement for Black & Decker 20V MAX batteries, offering 4000mAh capacity and 20V output. Compatible with a broad range of Black & Decker cordless tools, it features built-in overcharge protection and meets FCC, RoHS, and CE safety standards. Perfect for professionals and DIYers seeking reliable, long-lasting power with a 1-year warranty and 30-day money-back guarantee.








| ASIN | B071KW8D4X |
| Amperage | 4 Amps |
| Antenna Location | Compatible with Black & Decker 20V Max Cordless Power Tools Battery LBXR20 LBXR2020 LBX20 LBXR2520 LB2X4020 LB2XR20 |
| Battery Capacity | 4 Amp Hours |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 882 Grams |
| Best Sellers Rank | #57,146 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #186 in Cordless Tool Accessories #582 in Outdoor Power Tool Accessories |
| Brand | Biswaye |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,140) |
| Item Dimensions | 13 x 9.5 x 7 centimeters |
| Item Weight | 0.5 Pounds |
| Manufacturer | CXAB |
| Model Name | Compatible with Black and Decker 20V Battery Replacement LBXR20, LB20, LBX20, LBX4020, LB2X4020, LBXR20-OPE, LBXR2020-OPE, LB2X3020-OPE |
| Model Number | LBXR20 |
| Number of Batteries | 2 Lithium Ion batteries required. (included) |
| Reusability | Rechargeable |
| UPC | 611517092985 |
| Unit Count | 2 Count |
| Voltage | 20 Volts |
C**A
Not sure about longevity. Just got the batteries. They are charging in my vac. So far so good. This are easily half the cost of one brand specific (Black & Decker) batteries. If they're reliable and last quite a while, they'll be a great deal....two for less than the price of one! If they only last half as long as the brand specific one, they're still a good deal. It's great to have two charged up batteries in case one doesn't last long enough to vac the whole house at one time.
A**R
Love the new batteries. They do take quite a while to charge. Like that I got two for a great price.
R**S
Seem to be working well. The only issue I encountered was that the new replacement batteries didn't fit very well with the original B&D charger. It appeared to be the new batteries were just a bit too wide, but with a little bit of pressure, I got them on. Not as difficult to attach them to the weed eater. Batteries had a nice, strong charge, and worked well as replacemnets.
P**M
They shipped quickly and the new batteries last long enough to get some work done!
C**E
As expected
Trustpilot
3 weeks ago
2 days ago