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4.0Ah 20V Lithium Battery for Black and Decker Power Tools - 2 Pack

  • Based on 638 reviews
Condition: New
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$39.99 Why this price?
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Availability: 20 left in stock
Fulfilled by Amazon

Arrives Monday, Oct 26
Order within 4 hours and 24 minutes
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Features

  • [Product Details] Battery Type: Lithium Ion; Voltage: 20V; Capacity: 4000mAh/4.0Ah
  • [Perfect Compatibility] Compatible with original 20V batteries: LBXR20, LBX20, LBXR2040, LB2X4020-OPE, LBXR20B-2. Note: This is a replacement battery, not the original
  • [Easy to use] With easy ejection and interface - protection design, it is more convenient to use
  • [Multiple Protection Functions] With built - in overcurrent, overcharge, and overdischarge protection circuits, you can use it with peace of mind. It has no memory effect, so it can be charged at any time
  • [Friendly Service] If you have any questions about the product, please feel free to contact us. We will do our best to ensure customer satisfaction

Description

Are batteries compatible with original existing 20V tools? The batteries are compatible with original older 20V tools as well as newer models, such as drills, impact drivers, saws, vacuums, lawn mowers and more. What safety features do batteries incorporate? Overload Protection, Overcharge Protection, Short Circuit Protection, Temperature Control, Battery Cell Balancing, Shock Absorbing Construction, Cool-to-Touch Housing Do batteries self discharge when not in use? Our batteries adopt high-quality grade A lithium-ion cells and are equipped with battery management circuits. They can maintain the charge well even when they are not used for several months. How long do batteries typically last before replacement? Our batteries are made of high-quality materials and support 500 to 1000 charge cycles. Generally, they can be used for 2 to 4 years. How should batteries be stored when they are not in use? 1. Storing batteries in a cool, dry place that is far away from heat sources and moisture and fully charging them before long-term storage will help extend the battery life. 2. It is recommended to charge the batteries once every 3 to 6 months. About Bmcot – Powering Your Tools, Empowering Your Work With a decade of specialized experience in battery technology, Bmcot focuses on power tool replacement batteries. We go beyond industry standards, upholding robust safety, consistent stability, and seamless OEM compatibility. Each battery undergoes 12+ rigorous quality inspections and holds CE, FCC, RoHS certifications for reliable use. Equipped with advanced lithium-ion cells, it delivers 30% longer runtime and 500~1000 charge cycles, ensuring steady performance even in demanding heavy-duty tasks. Choose Bmcot for dependable, high-efficiency power that keeps your tools performing at their best. Battery Safety & Maintenance Guidelines: To ensure your safety and extend battery lifespan, please adhere to the following key tips 1. Essential Safety Precautions 2. Easy Maintenance Tips Provide unparalleled service and premium products, with 24/7 user support to enhance user satisfaction Simply contact the seller using the order number, and they will respond to your message within 12 hours.

Number of Batteries: 5 AA batteries required. (included)


Brand: Bmcot


Battery Cell Composition: Lithium Ion


Battery Capacity: 4000 milliamp_hours


Recommended Uses For Product: drills, weed trimmers, string trimmers, vacuums, lawn mowers, hedge trimmers, leaf blowers, chainsaws, cordless saws, grinders, starter kits, and more See more


Number of Batteries: 5 AA batteries required. (included)


Brand: Bmcot


Model Number: LBXR20


Model Name: LBXR20


Manufacturer: Bmcot


Included Components: 2 x 4.0Ah Battery


Warranty Description: One Year Warranty


Battery Capacity: 4000 milliamp_hours


Voltage: 20 volts


Reusability: Rechargeable


Amperage: 4 A


Compatible Phone Models: 20v power tools and chargers


Unit Count: 2 Count


Battery Weight: 1.6 pounds


Antenna Location: drills, weed trimmers, string trimmers, vacuums, lawn mowers, hedge trimmers, leaf blowers, chainsaws, cordless saws, grinders, starter kits, and more


Battery Cell Type: Lithium Ion


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Oct 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Good price
Good product, fast charging, last enough to do the job , good price
Reviewed in the United States on September 4, 2026 by gica p.

  • Charging is weak
After charging don’t last long
Reviewed in the United States on August 4, 2025 by Carolyn

  • Great price for quality batteries that fit and work with B&D tools.
Last time I bought knock off band batteries was a disaster, but I was willing to risk it based off reviews that I saw. I have had these a few months and put them through their paces. They work great. I have been very pleased. The battery life is long. The power is better then I recall the actual Black and Decker batteries being when they were new. They fit perfectly and a snap to install or charge. I am a fan, and might buy more if I expand my B&D tool line. ... show more
Reviewed in the United States on December 19, 2025 by Neileo

  • Works on black and decker tools
Prompt delivery and the battery is as advertised. It perfectly fits all of my black and decker yard devices
Reviewed in the United States on May 23, 2026 by TD73

  • Only last 15 minutes
I'm very disappointed in these batteries. They worked great for about 15 minutes - not really any better than the old ones I was trying to replace. I should have looked closer to see these are not black and decker.
Reviewed in the United States on September 2, 2026 by Karen Flowers

  • Good value for a OEM battery
Good deal for what it is. A bigger battery would be better but these last a pretty good while. The original one lasted 3 yrs so I would expect the same from these
Reviewed in the United States on August 15, 2026 by Amazon Customer

  • I got the power
Nice little battery for the Black & Decker tools
Reviewed in the United States on August 11, 2026 by L F French

  • good price on the batteries
There were some delays on delivery
Reviewed in the United States on August 27, 2026 by tab

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