11.1V 4000 mAh Lithium Batteries 18650-3S2P

11.1V 4000 mAh Lithium Batteries 18650-3S2P

11.1V 4000 mAh Lithium Batteries 18650-3S2P
  • Substantial 4000mAh Capacity: Greatly extends operational life for high-voltage portable devices.

  • 6-Cell (3S2P) Architecture: Distributes the load efficiently, improving thermal management and overall pack longevity.

  • Precision Cell Matching: All six cells are meticulously sorted to ensure identical internal resistance and capacity for balanced performance.

  • Advanced Protection Circuit: Integrated BMS safeguards against faults while actively balancing the 3 series connections.

  • Flexible Geometric Layouts: Can be arranged in a 2×3 block, a flat 1×6 line, or custom shapes to fit your device’s chassis.

  • Durable Spot Welding: Uses pure nickel strips for secure, low-resistance connections able to handle demanding continuous currents.

Please note that we have a MOQ for our battery. For batteries in stock, the MOQ is 10,000 pcs. For customized batteries, the MOQ is 50,000 pcs.

Hanery assists you throughout your project: battery size, capacity, discharge multiplier, operating temperature, safety, and associated protection circuitry. Please contact us or mark your requirements on the inquiry quotation.

Order single or thousands of items at a time. Our warehouse and flexible shipping options are available for last-minute, deadline critical orders.

Free Sample

*Customization is always available, please mark down your need in form or just contact us.

Battery Specification

1. Mechanical Characteristics

Cell18560PCMYes
NTCYesWeightappr. 300g
Configuration3S2P 

2. Electrical Specification

Capacity40000mAhNominal Voltage11.1V
Energy44.4WhInternal Resistanceless than 120 mΩ
Max. Charge Voltage12.6VDischarge Cut Off8.25V
Max. Charge Current4000mAMax. Discharge Current12000mA
Standard Charge Current800mAStandard Discharge Current800mA
Charging Temperature0℃ to 45℃Discharging Temperature-20℃ to 60℃
Storage Temp.Range

1 year at -20℃ to +30℃

3 mos. at -20℃ to +45℃

1 mo. at -20℃ to +60℃

Cycle life

100 cycles ≥92%

300 cycles ≥88%

500 cycles ≥80%

3. Cell protection

Overcharge Detection4.28V ±50mV (80 to 200msec delay, release 4.08V ±50mV)Overdischarge Detection2.9V ±100mV (40 to 120msec. delay, release 3.0V ±100mV)
Overcurrent Detection5A to 9A (9 to 15msec. delay)Short protectionYes

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