Search  for anything...

KINGTIANLE 2 Pack 4000mAh 20V Lithium Ion Battery Replace Battery for Black and Decker 20 Volt Max Battery LBXR20 LB20 LBX20 LBX4020 Cordless Power Tools Series

Based on 5,620 reviews
Condition: New
Checking for the best price...
$29.99
Save $10.00 was $39.99

Buy Now, Pay Later


As low as $7 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Nov 3
Order within 10 hours and 37 minutes

Available payment plans shown during checkout

Protect Your Purchase

Easy claims online, fast replacements, no fees

Checking for protection plans...

At a glance

Condition
New
Color
Black-2Pack
Model
LBXR20-4A
Battery Capacity
4 Ah
Voltage
20 volts
Reusability
Rechargeable
Amperage
4 A
Warranty
30 Day

Features 5

  • Battery Spec: capacity: 4000mAh; voltage: 20 Volt; type: lithium-ion battery; rechargeable
  • 4.0Ah High Capacity: The battery is 2.5 times more powerful than the original battery, provides reliable power for extended work sessions
  • Safety Features: with overheat protection, over-voltage protection, over-current protection, over-charge protection and short circuit protection etc
  • Compatible with Black and Decker Tools: Replaces 20v battery for Black & Decker LBXR20 and cordless power tools

Description

About KINGTIANLE KINGTIANLE batteries are made with the highest quality materials, CE certified, tested bymanufacturer to match or exceed specifications of OEM products. We dedicated ourself to providing high quality power tool battery products and excellent customer services, Achieving your thumbs up is our ultimate goal. Note: Thank you for your trust in our product We have over five years of experience in battery manufacturing and are committed to producing high-quality batteries. We strictly control every process in the factory, and all our batteries are tested and inspected, and certified to meet various safety standards.

Specs 15

Number of Batteries 2 Lithium Ion batteries required. (included)
Brand KINGTIANLE
Battery Cell Composition Lithium Ion
Battery Capacity 4 Ah
Recommended Uses For Product Power Tool
Model Number LBXR20-4A
UPC 345932353672
Manufacturer KINGTIANLE

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Nov 3

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


Worked great!
Color: Black-2Pack
Worked great with my B & D 20 V power tools. Hold a good lasting charge.
Reviewed in the United States on July 31, 2026 by janet

Great value - long lasting
Color: Black-2Pack
So awesome to finally find batteries for my weed eater that were affordable. They last a lot longer than the battery that came with the weed eater. It's so nice to be able to have multiple batteries ready to go!
Reviewed in the United States on July 18, 2026 by Lori

Not bad.
Color: Black-1Pack
These batteries are not too bad. Obviously, the thing about these batteries is if you have a lot of high, tough weeds to cut down, the batteries won't last over 15 minutes. I ran through 4 fully charged batteries in about 40 minutes or so but in all fairness, the job I used them for was a job for a gas trimmer with more power. Used for minor trimming jobs,, these batteries work well. If you are crazy like me and use them for cutting the grass/ weeds of a 180 foot property you'll be disappointed. ... show more
Reviewed in the United States on October 30, 2021 by JerseyRaider

Came on time, seem to work great.
Color: Black-1Pack
Work well for half the price of the brand name.
Reviewed in the United States on June 9, 2026 by Lynne E.

I like it them
Color: Black-2Pack
They are alright for now
Reviewed in the United States on August 14, 2026 by Anthony W.

Very compatible with Black and Decker.
Color: Black-2Pack
Works well with my tools
Reviewed in the United States on August 8, 2026 by Trudy Broussard

Only took 4 or 5 charges.
Color: Black-1Pack
These batteries only recharged 4 or 5 times. They didn't even last 1.5 years. Then they went completely dead even though the charger says I have a full charge. The machine still works with other batteries.
Reviewed in the United States on August 24, 2026 by Rich

Charger for weed eater
Color: Black-2Pack
Very reasonably priced and charges quickly.
Reviewed in the United States on July 16, 2026 by Nana Susan
Checking for best price...