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
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