21V 18650 BMS Protection Board 6MOS with Temperature Control

$8.42 $10.10

21V 18650 BMS Protection Board – 6MOS 3-Alloy with Temperature Control

Keep your cordless power tools running safely and efficiently with this 21V 18650 BMS (Battery Management System) Protection Board. Featuring a 6MOS 3-alloy circuit design and built-in temperature control, this board safeguards your 18650 lithium battery pack from overcharge, over-discharge, overcurrent, and overheating — extending the life of your tools and batteries.

Whether you're working with electric scissors, electric hammers, or electric saws, this protection board is a reliable replacement or upgrade for your power tool battery system. The integrated side LED indicators let you monitor battery status at a glance, making it ideal for home DIY projects and workshop use alike.

Key Features

6MOS 3-Alloy Design: High-efficiency MOSFET configuration for stable power delivery and low internal resistance
Temperature Control: Built-in thermal protection prevents overheating for safer operation
21V Output: Compatible with standard 18650 lithium battery packs used in cordless power tools
Side LED Indicator Lights: Convenient battery status monitoring at a glance
Multi-Protection Circuit: Guards against overcharge, over-discharge, overcurrent, and short circuit
Wide Compatibility: Suitable for angle grinders, electric scissors, electric hammers, and electric saws
Durable Metal Construction: Built to withstand the demands of regular power tool use
Plug-and-Play Replacement: Easy to install — no customization required

Specifications

Voltage: 21V
Battery Type: 18650 Li-ion
MOSFET Configuration: 6MOS
Material: Metal (3-Alloy)
Temperature Control: Yes
Side Indicator Lights: Yes
Country of Origin: Made in Mainland China

Compatible With

Electric Scissors
Electric Hammers
Electric Saws
Angle Grinding Machines
Other 21V 18650-based cordless power tools

Package Includes

1 × 21V 18650 BMS Protection Board (6MOS with Temperature Control)

Note: Actual product color may vary slightly from images due to monitor brightness and lighting conditions. Please refer to the physical item received.

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Frequently Asked Questions

Q: What power tools is this 21V 18650 BMS protection board compatible with?

A: This protection board is compatible with a range of 21V 18650 lithium battery-powered tools, including angle grinders, electric scissors, electric hammers, and electric saws. It is suitable for any cordless power tool that uses a 21V 18650 battery pack configuration.

Q: What does the temperature control feature do on this BMS protection board?

A: The built-in temperature control circuit monitors the battery pack's heat levels during charging and discharging. If the temperature exceeds a safe threshold, the board will automatically cut power to prevent damage to the battery cells and the connected tool, ensuring safe and reliable operation.

Q: How do the side LED indicator lights work?

A: The side LED indicator lights on this protection board display the current battery charge status, allowing you to quickly check remaining power without needing additional tools or devices. This is especially handy during DIY projects or workshop tasks where quick status checks are important.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.