DESC: Power up your system for business trips and vacations with this 9-Cell Lithium-Ion Primary Battery from Dell™.With a capacity of 85 WHr this battery lets you work seamlessly when you are on the move. Lithium-Ion batteries are longer lived than conventional batteries and do not require replacement as often. This product has been tested and validated on Dell™ systems to ensure it will work with your computer and is compatible with Dell™ Latitude™ D620 Notebook. It is supported by Dell™ Technical Support when used with a Dell system.