Type	3S lithium battery protection board
Compatible interface	SM
Battery Type	Li-ION
Over charge detection voltage(Cell)	4.250V±0.025V   Adjustable
Over Discharge Detection Voltage(Cell)	2.500V±0.050V  Adjustable
Over Current Discharge	8A±0.2A  Adjustable
Over Current Charge	8A±0.2A  Adjustable
Discharging Temperature	-30℃~65℃  Adjustable
Charge Temperature	-0℃~45℃  Adjustable
Max.Discharge Current	5A
Dimension	74.3*18.2*3.8 mm
Sample	Available

 

• • Our 3S Lithium Battery Protection Board is a professional-grade Battery Management System (BMS) designed for 3-series lithium-ion (Li-ion) or lithium-polymer (LiPo) battery packs. This advanced PCB provides comprehensive protection and balanced charging for 11.1V battery configurations, ensuring safety, performance, and longevity in high-demand applications.

    Ideal for industrial and commercial use, this BMS safeguards against over-charging, over-discharging, short circuits, and current overloads, making it a critical component for devices requiring reliable and stable power from three lithium cells in series.

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    Key Features & Advantages:

    1. Complete Protection Suite:

       • Over-Charge Protection: Automatically cuts off charging when any cell voltage exceeds 4.25V ± 25mV (per cell).

       • Over-Discharge Protection: Disconnects the load when any cell voltage drops below 2.5V ± 50mV (per cell).

       • Over-Current & Short-Circuit Protection: Responds within <10ms to excessive current or short circuits.

       • Optional Temperature Protection: Supports NTC thermistor integration for real-time temperature monitoring.

    2. Cell Balancing Function:

       • Passive balancing ensures all three cells charge uniformly, maximizing capacity and preventing voltage imbalance.

    3. High Current Support:

       • Available in 10A/15A/20A/30A continuous discharge current options (customizable).

    4. Low Power Consumption:

       • Ultra-low self-drain (<5μA) preserves battery energy during storage.

    5. Robust Design:

       • Compact PCB with high-quality components for durability and easy integration.

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    Typical Applications:

    • Electric mobility: E-bikes, E-scooters, Hoverboards

    • RC hobbies: Drones, RC cars/boats

    • Power tools: Cordless drills, saws

    • Solar energy systems: Portable power stations, solar light batteries

    • Backup power: UPS, emergency lighting

Shenzhen BAKTH Technology Co., Ltd. was established in 2002. For 21 years, it has been dedicated to battery pack assembly and PCM/BMS design and production. It has a 5,000-square-meter self-owned factory equipped with automated production lines and SMT assembly lines.