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IFR26650-25B High-Power LiFePO4 CellIFR26650-25B

2,500mAh, 3.2V, 30C continuous / 50C peak discharge — engineered for high-power starting, UPS and pulse-load applications. Ultra-low internal resistance ≤6mΩ for minimal voltage drop under high current.

Description

Extreme Pulse Discharge

50C short pulses (<5s) and 40C long pulses (<10s) satisfy the instantaneous power demands of engine starting and BBU surge events.

Cycle Life at High Rate

2,000+ cycles with 88% capacity retention at 5C charge / 5C discharge; 1,000 cycles at 45°C / 1C with 90% retention.

Ultra-Low Internal Resistance

≤6mΩ — the lowest in the 26650 series. Dramatically reduces voltage sag and heat generation under high current.

Fast-Charge Capable

Supports up to 5C standard charging — full charge in under 15 minutes under controlled conditions.

Proven Safety Record

300M+ cells shipped globally with zero explosions, fires or leaks. Stainless steel case with intrinsic LFP thermal stability.

Consistency & Traceability

Batch deviation <3%. Every cell carries a unique serial number for full production-cycle traceability from raw material to finished goods.

UPS Backup Power

BBU

Data Center Backup

Motorcycle Starting

Emergency Jump Starters

Start-Stop Systems

Power Tools

Defense Equipment

Engineering support: our team selects cells and tunes BMS parameters for your exact discharge profile — send us your load curve for a free simulation report.
ParameterValueUnit
ModelIFR26650-25B
ChemistryLiFePO₄ (LFP)
Nominal Capacity2.5 (2,500)Ah (mAh)
Nominal Voltage3.2V
Internal Resistance≤6
Standard Discharge Current1C
Max Continuous Discharge20C
Short Pulse Discharge50C (<5s)
Long Pulse Discharge40C (<10s)
Standard Charge Current1C
Max Charge Current5C
Charge Temperature0 to 60°C
Discharge Temperature−20 to 60°C
Cycle Life≥2,000 @ 5C/5Ccycles
High-Temp Cycle Life1,000 @ 45°C (90% retention)cycles
Energy Density96Wh/kg
Weight83±2g
Case MaterialStainless steel + PET shrink film
Diameter26.3±0.2 (max 26.5)mm
Height65.3±0.3 (max 65.6)mm

Customer Cases

Case studies are being compiled. To learn about reference projects for your specific application, please contact our sales team — we can share comparable deployments.

Datasheet & Certifications

Full specification PDF, UN38.3 test report and material declarations available in the download center.

Need This Cell Built Into a PACK?

Share your voltage, capacity and communication requirements — receive a PACK + BMS proposal within 12 hours.

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