INR21700D40JH 3.6V 4000mAh 45A Discharge 500 Cycles
Product Name
INR21700D40JH High-Rate Lithium-Ion Battery Cell
Advantages
Specifications
| Parameter | Value | Conditions |
| Nominal Voltage | 3.6V | - |
| Nominal Capacity | 4000mAh | 0.5C charge (2A), 1C discharge (4A), 2.5V cut-off |
| Minimum Capacity | 3900mAh | - |
| Internal Resistance | ≤15mΩ (AC, 1000Hz) | - |
| Charge Cut-off Voltage | 4.20V | - |
| Discharge Cut-off Voltage | 2.5V | - |
| Max Charge Current | 6A | 45°C ≥ T > 15°C |
| 3A | 15°C ≥ T ≥ 0°C | |
| Max Discharge Current | 45A | 80°C cut-off |
| Operating Temperature | Charge: 0°C to 45°C | Discharge: -20°C to 60°C |
| Cell Surface Temperature | Charge: ≤50°C | Discharge: ≤80°C |
| Dimensions | 21.65±0.2mm (D) × 70.95±0.2mm (H) | - |
| Weight | ≤71g | - |
Cycle Life
| Test Condition | Performance |
| 4A/20A charge/discharge (4.2V–2.5V) | ≥70% capacity retention after 500 cycles (80°C cut-off) |
| 4A/30A charge/discharge (4.2V–2.5V) | ≥70% capacity retention after 300 cycles (80°C cut-off) |
Discharge Curve

Operating Temperature Range
| Mode | Temperature Range | Notes |
| Charging | 0°C to 45°C | Optimal: 15°C–45°C |
| Discharging | -20°C to 60°C | Max surface temp ≤80°C during discharge |
| Storage | -20°C to 40°C (short-term) | Long-term: 10%–35% SOC at 20°C |
Certifications
Key Features
Applications

Usage Warnings & Precautions
Storage Guidelines
Warranty & Disclaimer