21V 18650 Battery Protection Board with Temperature Control
21V 18650 Battery Protection Board with Temperature Control
21V 18650 Battery Protection Board with Temperature Control & Side Lights
Keep your cordless power tools running safely and efficiently with this 6MOS 3-Alloy 21V Protection Board for 18650 lithium battery packs. Designed with built-in temperature control circuitry and side indicator lights, this compact board delivers reliable overcharge, over-discharge, and short-circuit protection for a wide range of power tools.
Key Features
- 6MOS 3-Alloy Design: Six MOSFETs with a triple-alloy layout for balanced current distribution and improved thermal performance.
- Temperature Control: Integrated thermal sensing helps prevent overheating during heavy-duty tool operation.
- Side Indicator Lights: Built-in LED side lights provide a clear visual status of battery charge and board activity.
- 21V Rated Voltage: Compatible with standard 5-cell 18650 lithium battery packs used in most 21V cordless tools.
- Comprehensive Protection: Guards against overcharge, over-discharge, overcurrent, and short circuit to extend battery pack life.
- Durable Construction: Made from metal components for lasting durability in demanding workshop environments.
Compatibility
Suitable for use with a wide variety of cordless power tools including:
- Angle Grinders
- Electric Scissors
- Electric Hammers
- Electric Saws
Specifications
| Voltage: | 21V |
| Battery Compatibility: | 18650 Lithium Cells |
| MOSFET Configuration: | 6MOS 3-Alloy |
| Material: | Metal |
| Country of Origin: | Made in Mainland China |
Package Contents
- 1 × 21V 18650 Battery Protection Board
Please Note: Colors may vary slightly from product images due to monitor brightness and lighting conditions. Please refer to the actual product received.
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Frequently Asked Questions
Q: What tools is this 21V 18650 protection board compatible with?
A: This protection board is designed for 21V cordless power tools that use 18650 lithium battery packs, including angle grinders, electric scissors, electric hammers, and electric saws. It is ideal as a replacement or upgrade board for DIY and professional tool battery packs.
Q: What does the temperature control feature do on this battery protection board?
A: The integrated temperature control circuit monitors the heat generated during tool operation and charging. If the board detects that temperatures are rising beyond a safe threshold, it acts to limit current flow, helping to protect both the battery cells and the tool from thermal damage.
Q: What does "6MOS 3-Alloy" mean on this protection board?
A: "6MOS" refers to the six MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) switches on the board, which handle the switching of charge and discharge current. "3-Alloy" describes the three-alloy configuration that helps distribute current evenly across the MOSFETs for improved efficiency and heat management.
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.