The 4S 100A LiFePO4 BMS is a professional-grade protection circuit designed specifically for 3.2V Lithium Iron Phosphate cells. In a 4-series (4S) configuration, it creates a 12.8V (nominal) / 14.4V (peak) battery pack—the perfect replacement for heavy lead-acid batteries. With a massive 100A discharge capacity, this board features a thick aluminum heat sink to dissipate heat, ensuring your DIY battery remains stable under heavy loads like inverters, motors, or solar charging systems.
Key Features
High Current Handling: Supports up to 100A continuous discharge, making it suitable for high-wattage DC appliances.
Integrated Balancing: Features an “Equalization” circuit that ensures all 4 cells stay at the same voltage, significantly extending battery life.
Multi-Layer Protection: Full safety suite including Over-charge, Over-discharge, Over-current, and Short-circuit protection.
Robust Heat Dissipation: Equipped with a heavy-duty aluminum plate to keep the MOSFETs cool during high-current operation.
Split Port / Common Port Design: (Note: Check specific stock, but usually supports common port for easy wiring).
Technical Specifications
Feature
Specification
Battery Type
3.2V LiFePO4 (Lithium Iron Phosphate)
Configuration
4S (4 Cells in Series)
Nominal Voltage
12.8V
Max Charge Voltage
14.4V – 14.6V
Continuous Discharge Current
100A
Instantaneous Peak Current
120A – 150A
Balance Current
35mA – 60mA
Overcharge Detection
3.65V ± 0.05V
Over-discharge Detection
2.3V – 2.5V
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