Get longer battery life and improved performance with a new replacement Dell N5YH9 battery.

This battery is compatible with the Dell Latitude E5440 and E5540 laptop models. Additional compatible models and part numbers are listed below.

We use the highest quality lithium-ion battery cells that charge faster and last longer than cheaper, lower quality batteries. All our products carry a full 2 Year warranty and every battery is charged and tested before it ships. We provide a 30 day money back guarantee if you are not completely satisfied.

Laptop Battery Express is a US based business with knowledgeable support staff to assist you before and after the sale. Yes, we have a phone number and real people answer your call! Free technical support is available if you need additional help in diagnosing power problems with your battery, ac power adapter or battery meter software.