FSKE 3.5Ah battery front view highlighting compact 40V power
FSKE 3.5Ah battery side profile highlighting slim design for tool compatibility
FSKE 40V battery LED indicators show remaining runtime at a glance
FSKE 40V battery smart BMS label emphasizing safety features
FSKE 40V battery shell close-up showing durable construction
FSKE 40V battery with charger demonstrating quick compatibility with tools

FSKE

FSKE 3.5Ah Replacement 40V Battery for Black and Decker 36V/40V Power+ Tools LBX2040 LBXR36 LBXR2036

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

$46.70

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Why customers choose TaskHolt Tools

Overview

The FSKE 3.5Ah replacement battery is a lithium ion pack designed for Black and Decker 40V tools. With a capacity of 3500mAh, it aims to deliver more usable power between charges while remaining compact for handheld use. The cells are described as A+ grade, and the design emphasizes a long discharge life and stable performance across many cycles. The pack is rated for a discharge life over 1000 cycles, and you may notice up to 75 percent more power than a 2.0Ah option.

In daily use you may notice stronger performance on dense grass, efficient mowing sessions, and steady power for trimming and pruning. This battery is built to work with a wide range of 40V tools and is compatible with standard 40V chargers, helping you keep multiple devices ready for action.

Key advantages

  • Excellent 3.5Ah replacement with 3500mAh capacity for potentially longer run time
  • Up to 75 percent more power than a 2.0Ah pack
  • Visible power status with four LED indicators; each light represents 25 percent charge, making it easy to gauge run time

Design and safety are prioritized with a smart BMS to guard against short circuits, overcharging, and overheating. The shell uses a PC plus ABS blend with an air ventilation approach to aid heat dissipation, contributing to durable daily use. A compact form and secure fit help ensure compatibility across tools such as lawn mowers, leaf blowers, trimmers, and chainsaws within the 40V family.

Real world use and care

  • During busy yard work, check charge with the LED indicators before long sessions
  • Store in a cool, dry place when not in use to maintain performance

If you need support, FSKE offers customer service to assist with questions or setup, helping you choose a reliable replacement battery for your Black and Decker tools

FAQ

Q: Is FSKE 3.5Ah compatible with Black and Decker 40V tools?

A: Yes—it's designed to fit Black and Decker 40V tools such as LBX2040, LBXR36, and LBXR2036.

Q: How can I check remaining battery life while working?

A: Use the four LED indicators; press the button to see current charge level (each light equals 25%).

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