Placeholder 3S 40A 18650 Battery Charger Protection Board (BMS) – Voltaat

3S 40A 18650 Battery Charger Protection Board (BMS)

  • Sale
  • Regular price 13 QAR
  • Product ID: VT-4376
    30+ in stock


    This 3S 40A BMS is designed to manage and protect 3-cell lithium-ion battery packs. It ensures safe charging, discharging, and balancing of each cell, preventing overcharge, over-discharge, overcurrent, and short-circuit issues. Ideal for battery packs used in e-bikes, power tools, solar storage, and DIY energy systems.

    • 3-Cell (3S) Protection
      Supports 3-cell Li-ion  battery packs.

    • High Current Handling
      Supports continuous discharge current up to 40A, suitable for high-power applications.

    • Overcharge Protection
      Prevents battery voltage from exceeding safe limits.

    • Over-discharge Protection
      Cuts off power when the cell voltage drops too low, extending battery life.

    • Short Circuit & Overcurrent Protection
      Provides automatic recovery after fault removal.

    • Cell Balancing Function
      Helps maintain equal voltage across all cells during charging.

    • Battery Type: Li-ion 

    • Number of Cells: 3S (3 cells in series)

    • Max Continuous Discharge Current: 40A

    • Charging Voltage: 12.6V

    • Overcharge Detection Voltage: ~4.25V ± 0.05V

    • Over-discharge Detection Voltage: ~2.7V ± 0.1V

    • Balance Function: Yes

    • Short Circuit Protection: Yes, with auto recovery

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