TDT-3S-8307A 3S 20A 11.1V Li-ion / NMC BMS

TDT-3S-8307A 3S 20A 11.1V Li-ion / NMC Battery Management System

The TDT-3S-8307A is a high-performance Battery Management System (BMS) engineered for 3-series (3S) Li-ion and NMC battery packs with a nominal voltage of 11.1V.

Built around the CM1031-DT protection IC and high-efficiency 3080K MOSFETs, this module delivers reliable protection, precise voltage control, and stable high-current performance. It is designed for demanding applications requiring both safety and efficiency.

🔧 Electrical Specifications

• Battery Type: Li-ion / NMC
• Configuration: 3S (3 cells in series)
• Nominal Voltage: 11.1V
• Full Charge Voltage: 12.6V
• Continuous Charge Current: Up to 20A
• Continuous Discharge Current: Up to 20A
• Protection IC: CM1031-DT
• MOSFETs: 3080K high-current MOSFETs
• Standby Current: ≤60 μA

⚖️ Precision Voltage Balancing

This BMS features high-precision voltage balancing at 4.19V ± 0.05V, ensuring:

• Accurate cell cutoff during charging
• Reduced cell voltage drift
• Improved pack lifespan
• Enhanced charging stability

Balancing helps maintain equal voltage across all three cells, preventing premature degradation and improving long-term battery reliability.

🛡️ Advanced Protection System

The TDT-8307-3S provides comprehensive safety protection:

• Over-charge protection
• Over-discharge protection
• Over-current protection
• Short-circuit protection
• Temperature protection during discharge (65–75°C cutoff range)

This ensures battery safety even under heavy loads or harsh operating conditions.

⚙️ Design & Integration

• Compact, durable PCB design
• Simple wiring layout
• Robust MOSFET architecture for stable high-current handling
• Suitable for both DIY builders and professional integrators

Its efficient design makes it ideal for systems requiring consistent 20A performance.

🚲 Typical Applications

Perfect for:

• Electric bicycles
• Electric scooters
• Drones & UAV battery packs
• Power tools
• Portable energy devices
• Custom 3S lithium battery projects