Get up to 5 hours of battery life and improved laptop performance with an extended life Dell TM777 battery. This long run TM777 battery will run at least 50% longer than your original battery. The added run time is achieved with an additional 3 cells inside the cartridge. This TM777 battery is the same size as the smaller capacity battery but provides an additional 2 hours of battery life.
This Dell TM777 battery is compatible with the Dell Inspiron E1505, 1505, 1501, 6400, Latitude 131L, and Vostro 1000 series of laptops. Additional compatible laptop models and battery part numbers are listed below. Don't see yours? Check out our Dell battery catalog for the complete list, or call our customer support for help.
Estimated run time with this battery is 3-5 hours. Longer run times can be achieved by minimizing the power use, especially the screen brightness. We use the highest quality lithium-ion battery cells that charge faster and last longer than cheaper, lower quality batteries. Each battery is individually tested before shipment and backed by a 30 day complete satisfaction guarantee and a 2 Year warranty.
