For Dell Latitude E5440 E5540 Battery Type VV0NF 451-BBIE 7W6K0 F49WX N5YH9
F49WX NVWGM CXF66 WGCW6 N5YH9. VVONF VJXMC 0M7T5F 0K8HC 1N9C0 7W6K0. For Dell Latitude E5440. For Dell Latitude E5540. Battery type: Li-ion Battery. Number of Battery Cells: 6. Compatible Model ( Press " Ctrl+F " to Find your laptop model).