INR21700E40JH 3.6V 4000mAh 3C Discharge 500 Cycles
Product Name
INR21700E40JH Lithium-Ion Rechargeable Battery
Advantages
Specifications
| Parameter | Value | Conditions |
| Nominal Voltage | 3.6V | - |
| Nominal Capacity | 4000mAh | 0.5C charge, 1C discharge, 2.75V cut-off |
| Minimum Capacity | 3900mAh | - |
| Energy Density | 215Wh/kg | - |
| Internal Resistance | ≤25mΩ (AC, 1000Hz) | - |
| Charge Cut-off Voltage | 4.20V | - |
| Discharge Cut-off Voltage | 2.75V | - |
| Standard Charge Current | 0.5C (2000mA) | CCCV, 4.2V, 80mA cut-off |
| Standard Discharge Current | 1C (4000mA) | - |
| Max Charge Current | 1C (4000mA) | 45°C ≥ T ≥ 15°C |
| 0.5C (2000mA) | 15°C ≥ T ≥ 5°C | |
| 0.1C (400mA) | 5°C ≥ T ≥ 0°C | |
| Max Discharge Current | 1C (4000mA) | 60°C ≥ T ≥ 45°C |
| 2C (8000mA) | 45°C ≥ T ≥ 35°C | |
| 3C (12000mA) | 35°C ≥ T ≥ 0°C | |
| 1C (4000mA) | 0°C ≥ T ≥ -20°C | |
| Dimensions | 21.65±0.2mm (D) × 70.95±0.2mm (H) | - |
| Weight | ≤71g | - |
Cycle Life
| Test Condition | Performance |
| 0.5C/1C charge/discharge (4.2V–2.75V) | ≥80% capacity retention after 300 cycles |
| ≥70% capacity retention after 500 cycles |
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 ≤70°C during discharge |
| Storage | -20°C to 40°C (short-term) | Long-term storage: 10%–35% SOC at 20°C |
Certifications
Key Features
Applications

Usage Warnings & Precautions
Storage Guidelines
Warranty & Disclaimer