• 5S 21V 25A Lithium Battery Protection Board
  • 5S 21V 25A Lithium Battery Protection Board
  • 5S 21V 25A Lithium Battery Protection Board
  • 5S 21V 25A Lithium Battery Protection Board
  • 5S 21V 25A Lithium Battery Protection Board
  • 5S 21V 25A Lithium Battery Protection Board
  • 5S 21V 25A Lithium Battery Protection Board
  • 5S 21V 25A Lithium Battery Protection Board

5S 21V 25A Lithium Battery Protection Board

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    Product Description:
    Ensure safe and reliable battery performance with this 5S 21V 25A lithium battery protection board. Designed for Makita-style power tools and DIY battery packs, it provides advanced protection against overcharge, over-discharge, and short circuits—helping extend battery life and improve safety during operation.



    Specifications:

    • Model: 5S BMS (Battery Management System)
    • Voltage: 21V (for 5-series lithium batteries)
    • Current: 25A continuous charge/discharge
    • Compatibility: 18650 / 21700 lithium-ion battery packs
    • Application: Makita power tools and DIY battery packs
    • Material: PCB circuit board with integrated IC chip
    • Protection Functions: Overcharge, over-discharge, overcurrent, short circuit

    Key Features:

    • Intelligent battery management for stable performance
    • Real-time monitoring of voltage, current, and temperature
    • Multi-layer protection system for enhanced safety
    • High current support ideal for power tools
    • Fast response to short circuit and overload conditions

    Other Details:

    • Suitable for battery repair and DIY projects
    • Helps extend battery lifespan and efficiency
    • Compact and easy to integrate into battery packs
    • Commonly used in cordless tools, e-bikes, and portable devices
    • Requires proper battery matching and installation for best performance



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