IFR18650N22A6.6 LiFePo4 Battery 3.2V 2200mAh 6.6A Discharge 2000+ Cycles
Product Name
IFR18650N22A6.6 LiFePo4 Battery Cell
Advantages
- High Discharge Performance: Supports up to 6.6A (3C) continuous discharge for power-demanding applications.
- Long Cycle Life: 2000+ cycles with ≥80% capacity retention.
- Ultra-Lightweight: Compact 18650 form factor ideal for portable devices.
- Safe LiFePo4 Chemistry: Intrinsic thermal stability for enhanced safety.
- Fast Charging: 0.5C (1100mA) rated charge capability.
Specifications
| Parameter | Value |
| Model | IFR18650N22A6.6 |
| Nominal Voltage | 3.2V |
| Nominal Capacity | 2200mAh |
| Energy | 7.4Wh |
| Internal Resistance | ≤30mΩ |
| Max Continuous Charge Current | 1100mA (0.5C) |
| Max Continuous Discharge Current | 6600mA (3C) |
| Charging Voltage | 3.65V |
| Discharge Cut-off Voltage | 2.0V |
| Weight | 49g |
| Dimensions (Diameter × Height) | 18.65mm × 66.5mm |
Cycle Life
| Cycles | Capacity Retention | Test Conditions |
| 1000 cycles | ≥90% | 0.5C Charge/Discharge, 25°C |
| 2000 cycles | ≥80% | 0.5C Charge/Discharge, 25°C |
Operating Temperature Range
| Mode | Temperature Range | Max Current (Charge/Discharge) |
| Charging | 0°C to 45°C | 1100mA (0.5C) |
| Discharging | -20°C to 60°C | 6600mA (3C) |
Discharge Curve

Certifications
- Complies with UN38.3, CE, RoHS, and IEC 62133 safety standards.
Key Features
- Compact & Lightweight: 49g weight for easy integration into small devices.
- Low Self-Discharge: <3% monthly loss for reliable long-term storage.
- Universal Compatibility: Standard 18650 size for seamless replacement.
Applications
- Portable Electronics: LED flashlights, handheld fans, and digital thermometers.
- Medical Devices: Portable nebulizers, blood pressure monitors.
- IoT & Wearables: Smart sensors, fitness trackers, and wireless earbuds.
- Low-Power Tools: Miniature cordless glue guns and hobbyist tools.
- Emergency Backup: Keychain power banks and emergency locator beacons.

Usage Warnings & Precautions
- ⚠️ Do NOT charge above 45°C or discharge below -20°C to avoid permanent damage.
- Use only LiFePo4-compatible chargers with 3.65V voltage limits.
- Prevent terminal short circuits, physical impacts, or exposure to liquids.
- Ensure proper polarity alignment during installation.
Storage Guidelines
- Recommended Storage SOC: 30%-50% (2.8V-3.3V per cell).
- Storage Temperature: -10°C to 35°C (dry, non-condensing environment).
- Recharge Interval: Every 6 months for batteries in prolonged storage.
Warranty & Disclaimer
- Warranty: 24-month limited warranty against manufacturing defects.
- Disclaimer: Warranty void if misused (e.g., overcurrent, extreme temperatures). Dispose per local regulations.