Get longer battery life and improved laptop performance with a new Dell F49WX type battery for the Latitude E5440 and E5540 series models.

This F49WX battery replaces the original battery found in Dell Latitude E5440 and E5540 laptop models as well as the F49WX battery part number. If you're looking for even longer battery life check out our 9 cell Dell Latitude E5440 battery.

We use the highest quality lithium-ion battery cells that charge faster and last longer than cheaper, lower quality batteries. Cheap batteries can wear in less than 100 recharge cycles. Our batteries can last for up to 500 recharge cycles.

This F49WX battery has a 2 Year warranty and each battery is inspected and tested before it ships. We provide a 30 day money back guarantee if you are not completely satisfied.