Get even longer battery life new long Run Dell 85 Whr battery. This long-run battery is compatible with the Latitude D531, D820, D830, D840 and the Precision M4300 laptop models.

This Latitude battery is typically superior to the original battery and is 100% compatible with your Dell laptop. Each battery is factory tested and inspected and backed by a 30-day complete satisfaction guarantee and a 2 Year warranty.

This battery will deliver 20% more run time than cheaper 9 cell versions and 77% more run time than cheaper 6 cell versions of this battery. If you prefer the 6 cell battery, click here for the standard 6 cell battery Dell laptop (our Dell-65).