Always on the go? No more worries about running out of battery power! You can power your Laptop with this 4-Cell Lithium-Ion Battery from Dell. With a capacity of up to 47 WHr, the battery lets your laptop work seamlessly when you are on the move. - Genuine Dell-branded parts undergo rigorous testing by qualified engineers to ensure compatibility and reliability in your Dell system. - Our sustaining qualification process allows for testing and certification of the newest technology on your Dell system. - Dell uses only OEM grade quality components.