3s 100A LiFePO4 Battery Balance Charging BMS Battery Protection Board-white

Description

The White 4S 100A LiFePO₄ BMS Protection Board is a high-current battery management system designed specifically for 4-cell (4S) LiFePO₄ battery packs. It provides complete protection, safe charging, controlled discharging, and passive cell balancing, making it ideal for DIY battery packs and energy storage applications.

This BMS ensures long battery life and reliable performance by protecting the cells against over-charge, over-discharge, over-current, and short-circuit conditions. The built-in balancing function helps maintain equal voltage across all cells during charging, improving overall efficiency and safety.

With a 100A current rating, this board is suitable for high-power applications such as inverters, solar energy systems, UPS, electric vehicles, and custom 12.8V LiFePO₄ battery packs.

🔧 Key Features

• Designed for 4S LiFePO₄ (Lithium Iron Phosphate) batteries

• Supports up to 100A discharge current

• Over-charge protection for individual cells

• Over-discharge protection to prevent deep discharge

• Over-current and short-circuit protection

• Built-in passive cell balancing during charging

• Compact PCB design with clearly marked terminals

• Supports common port or separate charge/discharge wiring

⚡ Electrical Specifications

• Battery Type: LiFePO₄ (LFP)

• Series Configuration: 4S (12.8V nominal)

• Max Discharge Current: 100A

• Max Charge Current: Up to 60A (typical)

• Over-charge Detection Voltage: ~3.6–3.7V per cell

• Over-discharge Detection Voltage: ~2.3–2.5V per cell

• Balancing Method: Passive balancing

📦 Applications

• 12V LiFePO₄ battery packs

• Solar energy storage systems

• Inverters and UPS systems

• Electric vehicles and e-bikes

• DIY battery projects and power backup solutions

⚠️ Note

• For LiFePO₄ batteries only (not suitable for Li-ion 18650 cells)

• Proper wiring and correct balance lead connections are required

• Use appropriate wire gauge for high-current applications