Work Longer, Play Longer and Last Longer Dell Latitude battery is the original battery from the house of Dell which helps it perform better. You can work and play longer as the battery last longer. This is the best rechargeable lithium-ion battery which helps the laptop perform better for longer hours. If you are looking for upgrade, this battery is the best option. It can hold charge at full load for 3 hours and +/- 6 hours at mid levelusag.