IFR26650-33B
Product Description
Product Features
FAQ
Product Tags
Key Takeaways
- 5C continuous charging (16,500mA) — around 12 minutes to full in a properly cooled pack.
- 3,300mAh in a standard 26650 can — Ø26.3 ± 0.2 mm × 65.3 ± 0.2 mm and approximately 85 g.
- ≥2,000 cycles at 3C/3C, 25 °C — long service life under frequent fast charging.
- 98.2% retention / 99.5% recovery after 28 days at 25 °C.
- UL1642 · UL2054 · UL1973 · IEC62133 · UN38.3 · RoHS · REACH compliance, produced under IATF 16949 and ISO 9001 quality systems.
Cell Structure & Build
The IFR26650-33B uses a nickel-plated stainless-steel can with PET shrink film and laser-welded terminals. Internal resistance is below 20mΩ and cell weight is approximately 85 g, keeping strings balanced in fast-charge packs.
- Nickel-plated steel can + PET film — mechanical protection and insulation
- Laser-welded terminals — low-resistance joints for high current
- ≈85 g — consistent weight for PACK balancing
- Batch-level traceability — from raw material to finished cell
Fast-Charge Behaviour
The cell accepts 5C continuous charge (16,500mA) at 25 °C, taking roughly 12 minutes from empty to full in a pack with adequate cooling. More than 90% of the charge is delivered at constant current, so turnaround stays predictable.
- 5C continuous charge at 16,500mA
- ≈12 minutes to full charge
- More than 90% charge efficiency
- Operating window −20 to +60 °C
Cycle Life & Storage
Cycle testing at 3C charge / 3C discharge, 25 °C, confirms 2,000 cycles. Storage tests at 25 °C for 28 days show 98.2% capacity retention and 99.5% recovery.
- ≥2,000 cycles at 3C/3C, 25 °C
- 98.2% retention after 28 days at 25 °C
- 99.5% recovery after the same test
- Suitable for daily fast-charge duty
Technical Specifications
| Mechanical | |
|---|---|
| Shape | Cylindrical |
| Case material | Nickel-plated stainless steel + PET shrink film |
| Diameter | 26.3 ± 0.2 mm (max 26.5 mm) |
| Height | 65.3 ± 0.2 mm (max 65.5 mm) |
| Weight | ≈85 g |
| Electrical | |
|---|---|
| Model | IFR26650-33B |
| Chemistry | LiFePO₄ (LFP) |
| Nominal capacity | 3.3 Ah (3,300 mAh) |
| Nominal voltage | 3.2 V |
| Internal resistance | <20 mΩ |
| Max continuous charge | 5C (16,500 mA) |
| Charge time at 5C | ≈12 min |
| Cycle life | ≥2,000 (3C/3C, 25 °C) |
| Operating temperature | −20 to +60 °C |
| Storage (25 °C / 28 days) | 98.2% retention |
| Compliance | UL1642 / UL2054 / UL1973 / IEC62133 / UN38.3 / RoHS / REACH |
Application Scenarios
One fast-charge cell platform for equipment that cannot wait long between shifts.
Storage & Reliability
Storage testing at 25 °C for 28 days showed 98.2% capacity retention and 99.5% recovery. Store the cell at −20 to +45 °C in a dry environment; long-term storage above +45 °C accelerates calendar ageing.
Related 26650 LiFePO4 Cells
IFR26650-34D — 3,400mAh Wide-Temperature Cell
−40 °C to +60 °C discharge for photovoltaic, military and outdoor packs.
IFR26650-25B — 2,500mAh High-Rate Cell
30C continuous / 50C pulse discharge for UPS, AGV and engine-start packs.
IFR26650-40A — 4,000mAh High-Capacity Cell
3C discharge and long runtime for energy-storage and industrial packs.
Need This Cell Built Into a PACK?
Tell us your voltage, capacity, current and enclosure requirements — our engineers reply within one business day with a solution and quotation.
NDA available upon request · Typical response within 12 hours