BTI 66DWX-BTI BatteryPower your Dell Latitude with uninterrupted productivity using the BTI 66DWX BTI Battery. This compact, high efficiency replacement is engineered for the Latitude 7340, 7440, and 7640 series, delivering dependable runtime in a lighter, smaller package. At 11. 4V and 57Wh, the 3 cell Li ion design packs substantial energy into a slim form factor, helping you squeeze more work into each charge without weighing down your laptop. Built with a proprietary