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BLACK+DECKER 20V MAX 4.0Ah POWERCONNECT Battery LB2X40201 / 6
Product guide

BLACK+DECKER 20V MAX 4.0Ah POWERCONNECT Battery LB2X4020

The BLACK+DECKER 20V MAX POWERCONNECT LB2X4020 is a 4.0Ah lithium-ion battery for compatible BLACK+DECKER 20V MAX tools. Its higher capacity is intended for longer-running tasks, with the trade-off of more weight than compact battery options.

At a glance

  • POWERCONNECT battery platform is described as compatible across BLACK+DECKER 20V MAX products.
  • The listing identifies 4.0Ah capacity for extended use with tools such as saws, sanders, hedge trimmers, string trimmers and leaf blowers.
  • Onboard electronics are claimed to monitor voltage and temperature to guard against overloading and extend battery life.
  • A release latch is designed to make battery changes between tools easier.
Price
$59.99Save 40%

Reference price: $99.99

Price checked: Nov 14, 2026

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Often bought together

Pros and cons

Pros

  • The 4.0Ah capacity offers a longer-runtime option than the separately sold 1.5Ah and 2.0Ah batteries.
  • One battery can be shared across compatible BLACK+DECKER 20V MAX POWERCONNECT tools.
  • Customer feedback reports useful runtime and broad usefulness across different tasks.

Cons

  • At 1.46 pounds, it adds weight compared with the product line's compact 1.5Ah option, a trade-off some customers also notice.

Technical specifications

7 specifications
Identity
BrandStanley Black and Decker
ModelLB2X4020
Battery chemistryLithium Ion
Capacity4Ah
Platform voltage20V MAX
Dimensions and weight
Dimensions listed6.94 x 3.18 x 5.31 inches
Weight listed1.46 pounds

What to know before buying

  • The listed dimensions and weight are manufacturer-provided specifications. Runtime depends on the tool and task, and the stated platform compatibility applies to BLACK+DECKER 20V MAX POWERCONNECT products.

Who is it for?

A good fit for

  • Owners of compatible BLACK+DECKER 20V MAX POWERCONNECT tools who want a higher-capacity battery for longer tasks.
  • Buyers who value being able to swap a battery among compatible home, garden and DIY tools.

Less suited to

  • Shoppers prioritizing the lightest battery for short tasks, for which the listing suggests separately sold 1.5Ah or 2.0Ah options.
  • Owners of tools outside the stated BLACK+DECKER 20V MAX POWERCONNECT range.
BLACK+DECKER 20V MAX 4.0Ah POWERCONNECT Battery LB2X4020 · photo 2
Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 1,515 ratings
  • 5 stars83%83%
  • 4 stars11%11%
  • 3 stars3%3%
  • 2 stars0%0%
  • 1 star3%3%

Customer feedback reports longer use between charges, useful power and versatility across tools, with some customers also appreciating its perceived quality and value. One customer mentions 45 minutes on a trimmer, but that is an individual report rather than a runtime guarantee. Feedback on weight is mixed, which matters for handheld tasks given the listed 1.46-pound weight. Aggregate ratings are largely five-star but also include a small one-star share, so they do not establish a specific cause for dissatisfaction.

Positive themes

  • Customers report useful runtime and power for extended tasks.
  • Feedback describes the battery as versatile across tools and appreciates its perceived quality and value.

Mixed feedback

  • Some customers find the weight manageable compared with a smaller battery, while others say it feels heavier.

Frequently asked questions

Which tools is this battery intended for?

The listing describes it for the BLACK+DECKER 20V MAX POWERCONNECT range. Check the tool’s platform and battery fit before purchase.

What does 4.0Ah mean for use?

The listing positions 4.0Ah as a longer-runtime option than the separately sold 1.5Ah and 2.0Ah batteries. Actual runtime varies with the tool and task.

Is the charger included?

The supplied product details do not list a charger as included. Confirm the selected listing’s package contents if you need one.

Is it heavier than a compact battery?

The listed weight is 1.46 pounds. Customer feedback is mixed on weight, and the listing presents smaller-capacity batteries as compact alternatives.

BLACK+DECKER 20V MAX 4.0Ah POWERCONNECT Battery LB2X4020 · photo 3
Additional product photo 3

Alternative options

Product details in Markdown