Description Stay unplugged longer with this Genuine Official Original DELL 451-11977 Laptop Battery batteries. These rechargeable batteries use Lithium-Ion technology and can be used as replacement for aging system batteries or as a convenient spare battery. Always on the go? No more worries about running out of battery power! You can power your Laptop with this 6-cell Lithium-Ion Battery from Dell™. With a capacity of up to 60W/HR, the battery lets you work seamlessly when you are on the move for business trips or vacations. This battery provides uninterrupted reliable performance you need to get the most out of your system. Dell Certified Parts undergo rigorous testing by qualified engineers to ensure compatibility and reliability in your Dell system Our sustaining qualification process allows for testing and certifying the newest in technology on your Dell system Warranty Our Limited One Year Warranty guarantees that if our Dell Certified Parts should fail, we will replace them Dell Certified means no worry of voiding your system’s hardware warranty Features: Battery technology: Lithium-Ion (Li-Ion) Made for : Notebook/Tablet Number of battery cells 6 Battery capacity (Watt hours) 60 Wh Compatible Models:  Dell Latitude E5420 Dell Latitude E5420m Dell Latitude E5430 Dell Latitude E5520 Dell Latitude E5520m Dell Latitude E5530 Dell Latitude E6420 Dell Latitude E6420 ATG Dell Latitude E6420 XFR Dell Latitude E6430 Dell Latitude E6430 ATG Dell Latitude E6440 Dell Latitude E6520 Dell Latitude E6530 Dell Latitude E6540