3S 10A 12V 18650 Lithium Battery Charger Board Protection Module

The 3S 10A 12V Battery Management System (BMS) is designed to protect and manage three series-connected 18650 lithium-ion or polymer batteries. It provides essential safety features including overcharge, over-discharge, overcurrent, and short-circuit protection, ensuring reliable and safe battery usage in your DIY and embedded electronics projects.

This protection board is suitable for 3S battery packs with a nominal voltage of 11.1V (3.7V × 3) and can handle a maximum charging voltage of 12.6V. Ideal for low-power applications such as LED lighting, solar street lamps, power banks, and more.

✅ Features

• Supports 3-series lithium battery packs

• Overcharge / Over-discharge / Short Circuit / Overcurrent protection

• Suitable for 12V electronic devices, solar lights, rechargeable systems

• Compact and lightweight

• Long service life: >30,000 hours

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📋 Specifications

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⚠️ Important Notes

• Wiring must be done strictly as per BMS layout:

  • B0 → 0V

  • B1 → 3.7V

  • B2 → 7.4V

  • B+ → 11.1V

• Always balance the voltage of each cell before connecting.

• Not suitable for LiFePO4, high-current motors, or electric vehicles.

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🔧 Example Applications

• Rechargeable LED lighting systems

• Solar-powered lamps

• Battery-powered gadgets

• Power backup for routers, monitors, etc.

• DIY lithium battery packs for electronics