4S 6A JLGW Li-ion Battery Management System (BMS) – Long Type

Overview:
The 4S 6A JLGW Li-ion BMS is a compact and reliable battery management system designed for 4-cell lithium-ion battery packs (4S configuration). Built in a long, narrow form factor, it’s ideal for compact battery enclosures. This BMS ensures safe operation through overcharge, over-discharge, short circuit, and overcurrent protection, along with passive cell balancing.

Key Specifications:

• Battery Configuration: 4 cells in series (4S)

• Nominal Voltage: 14.8 V (3.7 V per cell × 4)

• Maximum Charge Voltage: 16.8 V (4.2 V per cell max)

• Cutoff Voltage (Discharge): ~2.8 V per cell (~11.2 V total)

• Continuous Discharge Current: 6 A

• Overcurrent Protection: Activates typically at 8–10 A

• Short Circuit Protection: Yes (auto-recovery or manual reset based on model)

• Cell Balancing: Passive balancing (~30–60 mA per cell)

• Quiescent Current: Ultra-low, preserving battery charge in idle state

• Operating Temperature: -20°C to +60°C

• Form Factor: Long/narrow PCB design – ideal for space-restricted or cylindrical battery packs

• Protection Features:

  • Overcharge protection

  • Over-discharge protection

  • Overcurrent protection

  • Short circuit protection

  • Cell balancing

  • Optional temperature sensor input (on select models)

Additional Features:

• JLGW Quality: Manufactured with reliable MOSFETs and ICs for stable long-term performance

• Battery Chemistry: Optimized for Lithium-ion (Li-ion) and NMC cells (Not suitable for LiFePO₄ unless specified)

• Wiring Type: Available in both solder pad and connector options (varies by version)

Applications:
Perfect for:

• Compact 4S battery packs

• LED lighting systems

• Small e-scooters or e-bikes

• Power banks and USB chargers

• Portable electronics

• RC projects and robotics