Amazon.com: AC Doctor INC Laptop Battery for Dell Latitude 14 15 5000 E5440 E5540 Series M7T5F VV0NF FT6D9 3K7J7 5200mAh 11.1V Replacement : Electronics
VV0NF - 6-Cell Battery for Latitude E5440 E5540 - CPU Medics
Amazon.com: SOLICE New VV0NF Laptop Battery for Dell Latitude E5540 E5440 0K8HC 1N9C0 CXF66 WGCW6 0M7T5F F49WX NVWGM 7W6K0[11.1v 65wh] : Electronics
Dell Latitude E5440 Battery
Battery for Dell Latitude E5440 P44G E5540 P44G001 Laptop 4400mAh | eBay
Replacement Battery Pack for Dell Latitude E5440 E5540 | Battery Mart
New Dell Latitude E5440 E5540 6-cell 65Wh OEM Original Laptop Battery VV0NF - Newegg.com