Dell FJTXY | 4-Cell 40WHr Battery 2690 Latitude E5440 E5540

Here are the technical specifications of the Dell 4-Cell 40WHr Battery 2690 Latitude E5440 E5540:

- Type: Lithium-Ion
- Capacity: 40WHr
- Number of Cells: 4
- Voltage: 11.1V
- Compatible Devices: Dell Latitude E5440, E5540
- Battery Life: Up to 6 hours

Helpful Notes:
- This battery is a genuine Dell product, ensuring compatibility and reliability.
- The 4-cell design provides a balance between battery life and weight.
- It is recommended to fully charge and discharge the battery at least once a month to maintain optimal performance.