7.4V 12000 mAh Lithium Batteries 21700-2S3P
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Model: Hanery 21700-2S3P-12000
The Hanery 21700-2S3P-12000 is a specialized, heavy-duty power pack designed not just for capacity, but for extreme continuous power delivery. By utilizing six high-discharge cells in a 2S3P configuration, this pack shares the electrical load across three parallel strings. This drastically reduces internal resistance, minimizing heat generation and voltage sag when driving powerful motors in professional power tools, large RC vehicles, and high-wattage industrial equipment, making it the superior choice for high-drain 7.4V applications.
High-Drain Optimized (2S3P): Designed specifically to handle massive continuous discharge currents safely.
Superior Load Sharing: Distributing the current across 3 parallel strings reduces stress and heat on individual cells.
Massive 12,000mAh Reserve: Provides exceptional runtime even under heavy, continuous loads.
Ultra-Low Internal Resistance: Ensures maximum power is delivered to your device’s motor or electronics, not wasted as heat.
Heavy-Duty Balancing BMS: Integrates a high-amperage protection circuit to manage massive power flows safely.
Ruggedized Construction: Built with heavy-gauge nickel busbars and robust materials to withstand the physical demands of industrial use.
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.
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*Customization is always available, please mark down your need in form or just contact us.
Battery Specification
1. Mechanical Characteristics
| Cell | 21700 | PCM | Yes |
| NTC | Yes | Weight | appr. 350g |
| Configuration | 2S3P |
2. Electrical Specification
| Capacity | 12000mAh | Nominal Voltage | 7.4V |
| Energy | 88.8Wh | Internal Resistance | less than 130 mΩ |
| Max. Charge Voltage | 8.4V | Discharge Cut Off | 5.5V |
| Max. Charge Current | 6000mA | Max. Discharge Current | 24000mA |
| Standard Charge Current | 2400mA | Standard Discharge Current | 2400mA |
| Charging Temperature | 0℃ 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 Detection | 4.28V ±50mV (80 to 200msec delay, release 4.08V ±50mV) | Overdischarge Detection | 2.9V ±100mV (40 to 120msec. delay, release 3.0V ±100mV) |
| Overcurrent Detection | 5A to 9A (9 to 15msec. delay) | Short protection | Yes |
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