4S 12.8V 100A LiFePO4 Battery BMS Protection Board for Electric Vehicle Power System

Engineered exclusively for 4-cell series (4S) Lithium Iron Phosphate (LiFePO4) battery packs, this high-performance protection board delivers an exceptional maximum discharge current of 100A—tailored to meet the extreme power demands of heavy-duty applications. Optimized for LiFePO4’s unique electrochemical properties and 4S high-voltage configurations (nominal 12.8V, full charge 14.6V), it merges robust safety safeguards with ultra-high current handling, making it an ideal choice for high-power electric mobility, industrial equipment, and large-scale energy storage systems that rely on LiFePO4’s long cycle life and inherent stability.

4S LiFePO4-Specific Protection & 100A High-Current Safeguards

Calibrated to LiFePO4’s distinct voltage window and 4-cell dynamics, the board provides targeted protection optimized for 100A extreme-power discharge:

• Overcharge Protection: Triggers at 3.75V per cell (total 15V for 4S packs), instantly cutting charging current to prevent LiFePO4 cell degradation—critical for 4S systems where voltage imbalance across cells can accelerate capacity loss, especially under high-current stress.
• Undervoltage Protection: Shuts down discharge at 2.2V per cell (total 8.8V for 4S packs), avoiding irreversible damage to LiFePO4 cells that are sensitive to deep discharge, even more so during 100A sustained high-load operation (e.g., electric vehicle acceleration or industrial machinery startup).
• 100A Overcurrent & Short-Circuit Protection: Leverages military-grade high-power MOSFETs to block currents exceeding 100A (max discharge) or 300A (peak surge), shielding the 4S LiFePO4 pack and connected devices from burnout, overheating, or fire risks during extreme use or accidental short circuits.
• 4-Cell Active Balancing: Automatically equalizes voltage across all 4 LiFePO4 cells during charging, addressing the chemistry’s sensitivity to uneven charge distribution in high-current packs. This extends battery lifespan by up to 45% vs. unbalanced systems and maintains consistent 100A discharge performance over thousands of cycles.

This board is tailored for 4S LiFePO4 devices requiring 100A peak discharge:

• High-Power Mobility: 4S electric scooters (high-speed models), mini e-trucks, off-road utility vehicles, or electric forklifts.
• Industrial Equipment: 4S cordless heavy-duty jackhammers, large concrete saws, or high-torque industrial grinders (12.8V LiFePO4 systems).
• Energy Storage: 4S LiFePO4 power stations for job sites (powering multiple high-wattage tools), solar energy storage setups, or emergency backup systems.
• Specialized Gear: High-performance RC vehicles, electric boats, or small electric construction machinery.

Shenzhen BAKTH Technology Co., Ltd. was established in 2002. For 21 years, we've specialized in battery pack assembly and PCM/BMS design and production. Our 5,000-square-meter factory features automated production lines and SMT assembly capabilities.

ISO9001, ISO14001, UL, BIS, KC, USTC, CE, CB - our battery packs have reliable quality assurance.

No limitation - we offer competitive pricing based on order quantity. Sample orders are welcome to test our quality before bulk orders.

Standard warranty is 12 months (negotiable for special products). Our complete production process ensures quality before shipment.

Standard products: 3-4 weeks for samples (depending on cell availability), 5-8 weeks for bulk orders (varies by model and quantity).

Yes - our professional R&D team can provide customized solutions according to your requirements.