4S 12V 100A Protection Circuit Board

High-Current 4-Series (4S) Protection: Engineered for 4-cell 12V / 14.8V lithium-ion, LiPo, or LiFePO4 battery pack configurations operating up to 16.8V max charging voltage.

100A Continuous Discharge Capacity: Delivers up to 100A continuous discharge current with enhanced heat dissipation, built to handle heavy power demands in high-drain applications.

Integrated Cell Balancing Circuitry: Features passive cell voltage equalization during charging to keep all four series cells balanced, extending total battery pack life and capacity.

Multi-Layer Hardware Protection: Built-in automatic protection against overcharging, over-discharging, short circuits, and overcurrent to prevent battery damage and safety hazards.

Heavy-Duty Aluminum Heat Sink Housing: Encased in a rugged aluminum heat sink shell that shields PCB components from physical damage while efficiently cooling high-power MOSFETs.

Board & Housing Material: Heavy-duty aluminum enclosure housing a high-grade FR-4 PCB equipped with low-resistance power MOSFETs and balancing circuitry.

Technical Specifications:

Series Configuration: 4S (4 Cells in series).

Nominal / Max Voltage: 12.8V / 14.8V nominal (up to 16.8V max charge voltage).

Continuous Discharge Current: Up to 100A.

Balance Function: Yes (Integrated passive cell balancing).

Color: White / Silver housing with color-coded multi-pin balance wire harness.

Usage Advice: Connect the included balance wire harness accurately to each cell node sequence starting from B- up to B+ before connecting high-current load leads.

Maintenance: Ensure adequate airflow or ventilation around the aluminum housing when operating under high continuous current loads.

Essential High-Output 4S BMS: Position as a heavy-duty protection module for building or upgrading high-capacity 12V / 14.8V battery banks for solar energy storage, high-power inverters, electric trolling motors, and audio systems.

Highlight 100A Output & Cell Equalization: Emphasize how 100A continuous output paired with integrated cell balancing protects multi-cell battery packs from uneven wear and sudden voltage collapse.

Recommended Cross-Sell Add-ons: Pair with 3S 12V 100A Protection Circuit Board, 4S 100A LiFePO4 Lithium Battery Protection, 18650 BMS Board 4S 40A Balanced 16.8V, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your LiFePO4 (LFP) Hardware BMS Modules collection page as your high-current 4S 100A protection board.