[Related: Dell's Latitude 7390 2-in-1 Is Our Favorite Latitude Yet ... The Latitude 7390 is also strong on battery life, with our tryout getting 7.5 hours of heavy usage with the brightness ...

Dell has even loftier promises for the Latitude 7390 2-in-1, though -- with the company saying the convertible laptop should be able to get up to 17 hours of battery life before needing a re-charge.