21V 18650 BMS Protection Board with Temp Monitor for Power Tools
21V 18650 BMS Protection Board with Temp Monitor for Power Tools
21V 18650 BMS Protection Circuit Board with Temperature Monitor
Keep your cordless power tools running safely and efficiently with this 6MOS 21V 18650 Battery Management System (BMS) Protection Board. Designed for high-demand power tools, this circuit board features built-in temperature monitoring to help prevent overheating, overcharging, and over-discharging — extending the life of your battery pack and your tools.
Key Features
- 6MOS 3-Alloy Design: Six MOSFET configuration delivers stable, efficient power management for 21V lithium battery packs.
- Temperature Control: Integrated temperature monitoring helps safeguard your battery and tool from thermal issues during heavy use.
- Side LED Indicator Lamps: Built-in side lights provide a quick visual reference for power status.
- Wide Compatibility: Suitable for electric scissors, electric hammers, electric saws, angle grinders, and other 21V cordless power tools using 18650 cells.
- Durable Construction: Made from quality metal components for reliable, long-lasting performance in demanding workshop and job-site environments.
- Easy Replacement: Drop-in replacement for worn or faulty protection boards — no complex wiring required.
Specifications
- Voltage: 21V
- Battery Compatibility: 18650 lithium cells
- MOSFET Configuration: 6MOS
- Material: Metal / Plastic housing
- Temperature Protection: Yes
- Compatible Tools: Electric scissors, electric hammers, electric saws, angle grinders
- Country of Origin: Made in Mainland China
Package Contents
- 1 × 21V 18650 BMS Protection Circuit Board
Note: Product color may appear slightly different from images due to monitor brightness and lighting conditions. Please refer to the actual product received.
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Frequently Asked Questions
Q: What power tools is this 21V 18650 BMS protection board compatible with?
A: This 21V BMS protection board is designed for use with a wide range of cordless power tools that use 18650 lithium battery cells, including electric scissors, electric hammers, electric saws, and angle grinders. Always verify your tool's voltage and battery configuration before installing.
Q: What does the temperature monitor feature do on this BMS protection board?
A: The integrated temperature monitoring circuit continuously tracks the battery pack's heat levels during operation. If temperatures rise beyond safe thresholds, the protection circuit helps prevent damage to both the battery cells and the power tool, contributing to safer and longer-lasting performance.
Q: Is this BMS board a direct replacement for a worn-out protection circuit?
A: Yes. This board is intended as a replacement part for faulty or worn 21V 18650 protection circuits in compatible power tools. We recommend verifying your existing board's specifications — voltage, cell count, and MOSFET configuration — to ensure a proper match before installation.
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.