IFR26650-25B
Product Description
Product Features
FAQ
Product Tags
Key Takeaways
- 20C continuous / 50C pulse — 50A continuous, 75A for 60 seconds and 125A for 10 seconds.
- 2,500mAh in a standard 26650 can — Ø26.3 ± 0.2 mm × 65.2 ± 0.3 mm, 86 ± 2 g and 93Wh/kg.
- ≥2,000 cycles at 100% DOD with ±5C cycling.
- 5C maximum charge (12,500mA) with 1C standard charge at 2,500mA.
- UL1642 · UL2054 · UL1973 · IEC62133 · UN38.3 · RoHS · REACH compliance, produced under IATF 16949 and ISO 9001 quality systems.
Cell Structure & Build
The IFR26650-25B uses a nickel-plated stainless-steel can with PET shrink film and laser-welded terminals. Internal resistance is held at or below 6mΩ so the cell can deliver 50A continuous without excessive heating.
- Nickel-plated steel can + PET film — mechanical protection and insulation
- Laser-welded terminals — low-resistance joints for high-current duty
- 86 ± 2 g — consistent weight for PACK balancing
- Batch-level traceability — from raw material to finished cell
High-Rate Discharge
Rated for 20C continuous (50A), the cell also covers 30C for 60 seconds and 50C for 10 seconds. That combination suits engine cranking, UPS transfer and power-tool loads that mix a steady high current with short surges.
- 20C continuous (50A)
- 30C / 60-second pulse (75A)
- 50C / 10-second pulse (125A)
- Discharge window −20 to +60 °C
Charging & Cycle Life
The cell accepts up to 5C charging (12,500mA), shortening turnaround between shifts. Cycle testing confirms ≥2,000 cycles at ±5C and 100% depth of discharge in the 2,500mAh, 93Wh/kg format.
- 5C maximum charge / 1C standard
- 93Wh/kg energy density
- ≥2,000 cycles at 100% DOD
- Charge window 0 to +60 °C
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 | 65.2 ± 0.3 mm (max 65.5 mm) |
| Weight | 86 ± 2 g |
| Electrical | |
|---|---|
| Model | IFR26650-25B |
| Chemistry | LiFePO₄ (LFP) |
| Nominal capacity | 2.5 Ah (2,500 mAh) |
| Nominal voltage | 3.2 V |
| Internal resistance | ≤6 mΩ |
| Standard charge | 1C (2,500 mA) |
| Max continuous charge | 5C (12,500 mA) |
| Standard discharge | 1C (2,500 mA) |
| Max continuous discharge | 20C (50,000 mA) |
| 60-second pulse | 75,000 mA |
| 10-second pulse | 125,000 mA |
| Charge temperature | 0 to +60 °C |
| Discharge temperature | −20 to +60 °C |
| Cycle life | ≥2,000 @100% DOD |
| Energy density | 93 Wh/kg |
| Compliance | UL1642 / UL2054 / UL1973 / IEC62133 / UN38.3 / RoHS / REACH |
Application Scenarios
One high-rate cell platform for engine cranking, UPS transfer and power-tool surges.
Storage & Reliability
Store the cell at −20 to +45 °C in a dry environment, away from direct sunlight. Long-term storage above +45 °C accelerates calendar ageing; model-specific capacity-retention and recovery figures are available in the datasheet.
Related 26650 LiFePO4 Cells
IFR26650-30B — 3,000mAh High-Rate Cell
10C continuous and 20C pulse discharge with 3,000 cycles for engine-start and UPS packs.
IFR26650-40A — 4,000mAh High-Capacity Cell
3C discharge and long runtime for energy-storage and industrial packs.
IFR26650-25D — Low-Temperature Cell
80C discharge and −40 °C operation for cold-climate and outdoor equipment.
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