3S 10A Lithium Battery BMS Protection Board

The 3S 10A Lithium Battery BMS Protection Board is an essential battery management system designed for 3-series (3S) lithium-ion or lithium polymer battery packs. Operating at a nominal 10.8V to 11.1V, it provides comprehensive protection against overcharging, over-discharging, overcurrent, and short circuits. Featuring cell balancing capabilities, this BMS ensures the longevity and safety of your battery pack, making it ideal for DIY power banks, custom 18650 battery packs, robotics, and portable electronics requiring up to 10A of continuous current.

Key Features

• Designed for 3S lithium battery packs (11.1V nominal)
• 10A continuous discharge current capability
• Comprehensive overcharge and over-discharge protection
• Built-in short circuit and overcurrent protection
• Integrated cell balancing to maximize battery lifespan
• Compact PCB design for easy integration into battery enclosures
• Compatible with standard 18650, 21700, and LiPo cells

Technical Specifications

Applications

• DIY 18650 and 21700 battery packs
• Robotics and smart car power supplies
• Portable power banks and backup systems
• Bluetooth speakers and audio amplifiers
• LED lighting backup systems
• Custom electronics requiring stable 11.1V power

Important Notes

• Always connect the balance leads in the correct order (B-, B1, B2, B+) to avoid damaging the BMS or the batteries.
• Before first use, ensure the individual cells are at a similar voltage to allow the BMS to balance them effectively.
• Do not exceed the 10A continuous current rating, as doing so may trigger overcurrent protection or damage the board.
• Use a suitable spot welder or high-wattage soldering iron for quick connections to avoid overheating the PCB pads.
• Ensure proper insulation of the board and wiring to prevent accidental short circuits inside your battery enclosure.