4S 30A LiFePO4 Balanced Charging BMS PCB Board – High-Performance BMS for 12.8 V Battery Packs

Upgrade your 4-cell 12.8 V LiFePO4 battery pack with this robust 4S 30A LiFePO4 Battery Management System (BMS). Designed for both safety and efficiency, this PCB includes continuous 30 A discharge capability, cell balancing, and essential protective features—all built on a water-resistant, corrosion-resistant board.

Core Features & Benefits:

• 4S (4‑cell) LiFePO4 compatibility, 12.8 V battery packs

• 30 A continuous discharge current, ensuring steady power delivery

• Cell balancing circuit, maintaining uniform cell voltages over time

• Over‑charge, over‑discharge, over‑current, and short‑circuit protection

• High‑accuracy voltage detection maximises safety

• Compact and durable PCB (approx. 50 × 22 × 4 mm for reference variants)

• Wide operating temperature range and natural cooling design

Why It Matters:

• Protects your LiFePO4 cells from dangerous conditions and high-voltage anomalies

• Extends overall battery pack lifespan through dynamic balancing

• Compact and water-resistant, perfect for DIY solar setups, e-bikes, RC vehicles, power tools, and portable energy storage

Discharge:

• Continuous Discharging Current: 30A(MAX)
• Instantaneous Discharge Current: 56A
• Charge:
• Charging Voltage: 14.8V
• Charging Current: 20A (MAX)
• Overcharge Protect:
• Over-charge Detect: 3.75±0.05V
• Protect Delay: 1300MS
• Over-charge Release: 3.60±0.05V

Balance:

• Detect Voltage: 3.60±0.05V
• Release Voltage: 3.59±0.05V
• Balance Current: 58mA
• Over-discharge Protect:
• Over-discharge Detect: 2.1±0.08V
• Over-discharge Detect delay: 145S
• Release Voltage: 2.3±0.1V
• Over-current Protect:
• Detect Voltage: 200mV
• Detect Delay: 20mS
• Current Detect: 56±10A
• Release Condition: Cut Load
• Inner Resistance: ≤20mΩ
• Self-Consumption:
• Working Current: ≤30uA
• Sleep Current (when Over-discharge): ≤20uA
• Working Temperature Range: -30+80°
• PCB Board Size: 56x47mm/2.2×1.85″

Included with Purchase:

• 1 × 4S 30A LiFePO4 BMS PCB board

• Standard balance wire connector cable

Perfect For Users in:

Karachi, Lahore, Islamabad, Rawalpindi, Faisalabad, Peshawar, Multan, Quetta, Gujranwala, Sialkot, Hyderabad, and all major metro areas in Pakistan.