Lithium-Ion batteries are longer lived than conventional batteries and do not require replacement as often. This 6-Cell Lithium-Ion battery from Dell helps you power up your system for business trips and vacations. With a capacity of 56 WHr this battery lets you work seamlessly when you are on the move. This product has been tested and validated on Dell systems to ensure it will work with your computer and is Compatible with Dell Notebook. It is supported by Dell Technical Support when used with a Dell system. - Provides 56 WHr capacity - Offers reliable power for dependable performance - Powers up your system for business trips and vacations - This product has been tested and validated on Dell systems to ensure it will work with your computer - Supported by Dell Technical Support when used with a Dell system. Compatibility - XPS 14 (L401X) - XPS 15 (L501X) - XPS 15 (L502x) - XPS 17 (L701X) - XPS 17 (L702X).