3S Lithium Battery Charger Protection Module BMS 10A 12.6V

Description

3S Lithium Battery Charger Protection Module BMS 10A 12.6V

3S 10A 12.6V Li-ion/LiPo BMS – Key Specifications

1. Basic Parameters

• Cell Configuration: 3-series (3S)
• Nominal Voltage: 11.1V
• Full Charge Voltage: 12.6V (4.2V/cell)
• Max Continuous Current: 10A
• Peak Current (Pulse): 15-20A (≤3sec)
• Chemistry: Li-ion/LiPo (supports 4.2V/cell)

2. Protection Features

• Overcharge Protection:
  • Threshold: 4.25±0.05V/cell
  • Release: 4.15±0.05V/cell
• Over-discharge Protection:
  • Threshold: 2.5±0.08V/cell
  • Release: 3.0±0.1V/cell
• Overcurrent Protection: 15-30A (adjustable via shunt resistor)
• Short-Circuit Protection: Yes (auto-recovery)
• Cell Balancing: Passive balancing (typically 30-50mA balance current)

3. Electrical Characteristics

• Operating Current: <50μA (standby)
• Balance Current: ~35mA (per cell)
• Internal Resistance: <80mΩ
• Charge Voltage Tolerance: ±0.5%

4. Physical Specifications

• PCB Size: ~50x20mm (varies by model)
• Wire Gauge:
  • Charge/discharge: 16-18AWG
  • Cell taps: 22-24AWG
• Connectors:
  • JST-XH (common for cell taps)
  • Terminal blocks (for high-current models)

5. Temperature Range

• Operating: -20°C to +60°C
• Storage: -40°C to +85°C

6. Common Applications

• 3S DIY battery packs
• E-bike/e-scooter batteries
• Solar energy storage
• RC drones/robotics

7. Typical Wiring

B- ▶ Battery negative  
B1 ▶ Cell 1-2 junction  
B2 ▶ Cell 2-3 junction  
B+ ▶ Battery positive  
P- ▶ Load/charge negative

• Limitations 

⚠ No charging logic (requires external CC/CV charger)
⚠ Passive balancing only (not suitable for large capacity mismatches)
⚠ 10A limit (for higher currents, seek 20A/30A variants)

Usage Notes

1. Always balance-charge before first use
2. Do not mix cell types/capacities
3. Check polarity – reverse connection damages BMS
4. Heat dissipation needed at >5A continuous current