CYLINDRICAL LiFePO₄ CELL
F26650-25D
3.2V 2.5Ah 8Wh
The F26650-25D is a high-power 26650 LiFePO₄ battery cell engineered for applications requiring high discharge rates, fast charging, and reliable operation across demanding temperatures. With up to 80C pulse discharge, 7C charging capability, and operation down to -40°C, it is designed for high-performance battery pack applications.
F26650-25D Specifications
| Specification | Value |
|---|---|
| Part Number | F26650-25D |
| Chemistry | LiFePO₄ (LFP) |
| Cell Type | Cylindrical 26650 |
| Nominal Voltage | 3.2V |
| Nominal Capacity (0.5C) | 2500mAh |
| Diameter | 26.3 ± 0.2mm |
| Height | 65.3 ± 0.2mm |
| Weight | 83 ± 2g |
| Internal Resistance | ≤6mΩ |
| Standard Charge | 2500mA, 3.65V, 50mA cut-off (CC-CV) |
| Standard Discharge | 2500mA, 2.0V cut-off (CC) |
| Maximum Charging Current | 7C |
| Charge Temperature | -20°C to +60°C |
| Discharge Temperature | -40°C to +60°C |
| Cycle Life | 2,000+ cycles at 25°C, 12.5A |
Built for High-Power Applications
80C Pulse Discharge
Supports pulse discharge up to 80C for 1 second, providing high instantaneous power with reduced voltage drop.
7C Fast Charging
Supports charging rates up to 7C, with published testing showing up to 94% SOC in 8 minutes under specified conditions.
Wide Temperature Range
Designed for discharge operation from -40°C to +60°C and charging from -20°C to +60°C.
Low-Temperature Charging
Supports charging at temperatures down to -20°C, making it suitable for battery systems exposed to challenging cold environments.
Safety-Focused Design
Features CID overcharge protection and pressure-release venting and has passed penetration testing as part of its documented safety performance.
Long High-Rate Cycle Life
Rated for 2,000+ cycles at 25°C and 12.5A under the specified test conditions, supporting demanding high-rate applications.
Graphs
High Rate Discharge (pulse discharge at room temperature)
- Pulse (1 sec) discharge ratio up to 80C. More power with less voltage drop.
- Suitable for start-stop, power tools and other high instantaneous power requirements.
Fast Charging
- Fast charging rate up to 7C, constant current ratio is greater than 94%, 8 minutes fast charging up to 94% SOC.
- Suitable for fast charging applications.
Low Temperature Charging
- Achieving charging at low temperature -20°C.
- -20°C Charging capacity >70%, -20°C Charging capacity >60%, meeting the needs of low-temperature charging applications.
From Cell to Complete Battery Pack
Need More Than a Battery Cell?
PHD Energy can integrate the F26650-25D into a custom LiFePO₄ battery pack engineered around your application's power, charging, electrical, mechanical, environmental, and certification requirements.
- CELL
- MODULE
- BMS
- BATTERY PACK
APPLICATION
- Custom Pack Design
- BMS Integration
- Prototyping
- Testing & Validation
- Certification Support
- Scalable Manufacturing
F26650-25D FAQ
What is the F26650-25D?
The F26650-25D is a 3.2V 2.5Ah cylindrical LiFePO₄ battery cell designed for high-power, fast-charging, and wide-temperature battery pack applications.
What is the pulse discharge capability of the F26650-25D?
The F26650-25D supports pulse discharge up to 80C for 1 second, providing high instantaneous power for demanding applications.
How fast can the F26650-25D charge?
The cell supports a maximum charging current of 7C. Published performance data shows charging up to 94% SOC in approximately 8 minutes under the specified test conditions.
Can the F26650-25D charge at low temperatures?
Yes. The F26650-25D supports charging at temperatures down to -20°C, while its specified discharge temperature range extends down to -40°C.
What is the cycle life of the F26650-25D?
The F26650-25D is rated for more than 2,000 cycles at 25°C and 12.5A under the specified test conditions. Actual cycle life varies with operating conditions.
What safety features are built into the F26650-25D?
The cell incorporates CID overcharge protection and pressure-release venting and has passed penetration testing according to PHD Energy's published product information.
Can PHD Energy build a custom battery pack using the F26650-25D?
Yes. PHD Energy provides custom battery pack development including cell integration, BMS integration, prototyping, testing, certification support, and scalable manufacturing.