CYLINDRICAL LiFePO₄ CELL
F26700-40LT
3.2V 4Ah 12.8Wh
The F26700-40LT is a 26700 LiFePO₄ battery cell designed for reliable power, long cycle life, and operation across a wide temperature range. With 3C continuous discharge capability and discharge performance down to -40°C, it is engineered for demanding battery pack applications.
F26700-40LT Specifications
| Specification | Value |
|---|---|
| Part Number | F26700-40LT |
| Chemistry | LiFePO₄ (LFP) |
| Cell Type | Cylindrical 26700 |
| Nominal Voltage | 3.2V |
| Typical Capacity (0.2C) | 4000mAh |
| Minimum Capacity (0.2C) | 3950mAh |
| Diameter | 26.2 ± 0.3mm |
| Height | 70.3 ± 0.3mm |
| Weight | ≤94g |
| Internal Resistance | ≤16mΩ |
| Energy Density | 140Wh/kg |
| Max. Continuous Charge Rate | 1C |
| Max. Continuous Discharge Rate | 3C |
| Pulse Discharge Current | 20A / 5 sec |
| Charging Temperature | -10°C to +50°C |
| Discharge Temperature | -40°C to +60°C |
| Cycle Life | 1,500 cycles at 25°C, 0.5C |
Built for Demanding Operating Conditions
Wide Temperature Range
Designed for discharge operation from -40°C to +60°C, making it suitable for battery systems exposed to challenging environmental conditions.
3C Continuous Discharge
Supports continuous discharge rates up to 3C, with pulse discharge current up to 20A for 5 seconds.
Long Cycle Life
Rated for 1,500 cycles at 25°C and 0.5C under the specified test conditions.
Stable LiFePO₄ Chemistry
Lithium iron phosphate chemistry provides strong thermal stability, safety performance, and dependable cycle life.
Low Internal Resistance
Internal resistance of ≤16mΩ supports efficient power delivery and reduces internal losses.
Low Self-Discharge
Designed for applications requiring dependable energy retention during periods of storage.
Graphs
Charging Profiles at Different Rates
Supports continuous charging up to 1C.
Discharging Profiles at Different Rates
Up to 3C continuous discharge.
Low-Temperature Down to -40°C
Cell voltage and available capacity under different temperature conditions at a 0.5C discharge rate.
Cycle Life
Designed for Long-Term Battery Performance.
From Cell to Complete Battery Pack
Need More Than a Battery Cell?
PHD Energy can integrate the F26700-40LT into a custom LiFePO₄ battery pack engineered around your application's electrical, mechanical, environmental, and certification requirements.
- CELL
- MODULE
- BMS
- BATTERY PACK
APPLICATION
- Custom Pack Design
- BMS Integration
- Prototyping
- Testing & Validation
- Certification Support
- Scalable Manufacturing
F26700-40LT FAQ
What is the F26700-40LT?
The F26700-40LT is a 3.2V 4Ah cylindrical LiFePO₄ battery cell in a 26700 format, designed for rechargeable battery pack applications.
What is the discharge rate of the F26700-40LT?
The F26700-40LT supports a maximum continuous discharge rate of 3C and pulse discharge current of 20A for 5 seconds.
What temperature range can the F26700-40LT operate in?
The cell supports charging from -10°C to +50°C and discharge operation from -40°C to +60°C.
What is the cycle life of the F26700-40LT?
The F26700-40LT is rated for 1,500 cycles at 25°C and 0.5C under the specified test conditions.
Can PHD Energy build a custom battery pack using the F26700-40LT?
Yes. PHD Energy provides custom battery pack engineering and manufacturing, including cell selection, BMS integration, prototyping, testing, certification support, and scalable production.