Junwood 4.0Ah LBXR20 battery for extended runtime in 20V tools.
Junwood LBXR20 compatibility with a wide range of Black & Decker tools.
Junwood upgraded 4000mAh capacity for longer use between charges.
Junwood protection circuit guards against overload and short circuits.
Junwood LED fuel gauge shows charge status at a glance.
Junwood compact 20V battery for easy replacement and balance.
Junwood 80Wh lithium-ion battery powers tools with steady performance.

JUNWOOD

JUNWOOD 2-Pack 4.0Ah LBXR20 Replacement Battery for Black & Decker 20V Max – 80Wh Li-ion

High-performance tools and home improvement made for confident daily results

$74.22

3 shoppers currently have this item in cart.

Low stock: only 5 left in inventory. Add to cart before it's gone.

Shop Pay installment options may appear at checkout where eligible.

Free shipping Secure checkout 100% refund eligible
Bundle & save Buy 2 and save checkout time

Premium tools and home improvement quality selected for United States (USA) customers.

Routine pack Build your routine pack (3)

Fast dispatch with always-free shipping and secure checkout on every order.

Free shipping

i

Free shipping on every order. Fast dispatch, tracked delivery, and secure checkout included.

Easy returns

i

Simple return flow and responsive support for eligible items.

Peak-demand shipping delays

i

During high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.

24/7 customer support

Questions before checkout? Our team is available and ready to help.

Return & RefundEasy returns and policy details Shipping PolicyDelivery process and tracking info
Share

Why customers choose TaskHolt Tools

Upgrade your Black & Decker 20V MAX tools with JUNWOOD’s 2-pack replacement battery, engineered for reliable power and long-lasting performance. Each cell uses high-quality lithium-ion chemistry to deliver energy in a compact, balanced package designed to fit your cordless toolkit.

With an 80Wh capacity and a 20V nominal rating, these batteries supply substantial energy while staying comfortable to handle on busy days at the workshop or on the job site. The upgrade to 4000mAh means more energy available between recharges, while built-in protections help guard against common charging issues.

Key benefits

  • Wide compatibility: works with Black & Decker 20V MAX tools, including LB20, LBX20, LBX4020, LB2X4020, LBXR20, LBXR20-OPE, LBXR2020-OPE, LB2X3020-OPE, and LBXR2520.
  • Upgraded capacity: 4000mAh delivers stronger energy density for longer use between charges.
  • More power, less downtime: designed to provide up to 20% more power in compatible tools (where applicable).
  • Longer charge life: holds a charge up to 2x longer than some alternatives in real-world use.
  • Smart protection: built-in safeguards against overcharging, over-discharging, over current, and short circuits.
  • No memory effect: you can charge or discharge as needed without diminishing capacity over time.
  • LED gauge indicator: a 3-LED fuel gauge shows charge status at a glance for planning your tasks.

Product details

  • Voltage: 20V
  • Capacity: 4000mAh
  • Wattage: 80Wh
  • Type: Rechargeable Lithium-ion
  • Quantity: 2-pack replacement batteries

Why choose JUNWOOD

These batteries are designed for dependable power across everyday tasks—from drilling and fastening to light sanding and assembly. The compact form and balanced weight help maintain tool handling comfort, while the LED gauge supports quick power checks during work. The no memory effect means you can recharge as needed without worrying about loss of capacity.

Care and use tips

  • Use with compatible 20V MAX chargers and ensure proper seating in the tool’s battery slot.
  • Charge fully after use and store in a cool, dry place to maximize performance and longevity.

FAQ

Q: Which tools are compatible with the JUNWOOD 4.0Ah LBXR20 replacement battery?

A: Compatible with Black & Decker 20V MAX models including LB20, LBX20, LBX4020, LB2X4020, LBXR20, and LBXR2020-OPE.

Q: What benefits can I expect from upgrading to JUNWOOD 4.0Ah LBXR20?

A: May deliver longer runtimes with up to 20% more power; supports longer charge life and includes built-in protections plus an LED gauge.

You may also like