3.2V 3300mAh LiFePO4 Low Temperature Battery 5C Discharge Wide Temperature Range 26650 Cell
IFR26650-33B-W Lithium Iron Phosphate Rechargeable Cell
The IFR26650-33B is a high-reliability LiFePO4 cylindrical cell engineered for demanding applications requiring strong low-temperature performance and a wide operational temperature range. It provides stable output, high discharge capability, and long cycle life, making it ideal for systems requiring a dependable Low Temperature Battery or Wide Temperature Battery solution.
Advantages
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Excellent low-temperature performance with reliable operation even at -20°C.
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Long service life with more than 2000 deep cycles.
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High discharge rate capability suitable for power-intensive devices.
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Naturally safe LiFePO4 chemistry with strong thermal and structural stability.
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Wide temperature adaptability for diverse environmental conditions.
Specifications
Cell Specifications Table
| Parameter | Specification | Condition / Note |
|---|---|---|
| Model | IFR26650-33B | — |
| Nominal Voltage | 3.2 V | — |
| Typical Capacity | 3300 mAh | 2.0V–3.65V, 0.5C discharge |
| Minimum Capacity | 3270 mAh | 2.0V–3.65V, 0.5C discharge |
| AC Impedance (1kHz) | ≤ 15 mΩ | At 50% SOC |
| Standard Charge Current | 3300 mA (1C) | 25±2°C |
| Max. Charge Current (Continuous) | 16500 mA (5C) | 25°C, not for cycle use |
| Charge Voltage | 3.65 V max | CC-CV |
| Standard Discharge Current | 3300 mA (1C) | 25°C |
| Max. Continuous Discharge Current | 9900 mA (3C) | 25°C, not for cycle use |
| Max. Pulse Discharge Current | 16500 mA (5C) | ≤60s, surface temp ≤70°C |
| Discharge Cut-off Voltage | 2.0 V | — |
| Operating Voltage | 2.0 V – 3.65 V | — |
| Weight | 85.5 ± 2 g | — |
| Storage Humidity | < 50% RH | — |
Operating Temperature Range
Temperature Table
| Function | Temperature Range | Note |
|---|---|---|
| Charge | 0°C ~ 60°C | Refer to charge rate table |
| Discharge | -20°C ~ 60°C | — |
| Storage | -20°C ~ 60°C | Recommended ~50% SOC |
| Low-Temperature Capacity | 0°C ≥ 70%; -10°C ≥ 60%; -20°C ≥ 40% | After 4h soak, discharge 1C to 2.0V |
Cycle Life
Cycle Life Table
| Test Condition | Result | End-of-Life Criteria |
|---|---|---|
| 25°C ± 2°C, 100% DOD, 3C charge/discharge, 30-min rest | ≥ 2000 cycles | Capacity ≤ 80% of initial |
Discharge Curve
A graphical curve illustrating voltage vs. capacity at 0.2C, 1C, and 3C, including performance at 0°C, -10°C, and -20°C, should be inserted here. This supports users evaluating real-world performance for Low Temperature Lithium Battery applications.
Certifications
All safety and performance tests comply with GB/T 31241-2022.
Key Features
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Cylindrical steel casing for structural durability.
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Stable LiFePO4 chemistry optimized for high-drain systems.
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Suitable for demanding Low Temperature Battery and Wide Temperature Battery applications requiring long-term reliability.
Applications
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Electric Vehicles (EVs)
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Power Tools
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Portable Medical Devices
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Uninterruptible Power Systems (UPS)
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Consumer Electronics
Usage Warnings & Precautions
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Do not immerse the cell in water or liquids.
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Avoid heat sources and direct sunlight.
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Charge only with a designated Li-ion charger.
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Prevent short circuits.
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Do not crush, disassemble, or incinerate.
Storage Guidelines
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For 30–90 days: store at ~50% SOC.
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For >90 days: maintain ~50% SOC and perform one full charge/discharge every 90 days.
Warranty & Disclaimer
Standard warranty is one year from shipment or as contractually agreed. Warranty applies only when the product is used with a functional BMS and operated within all specified conditions.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.