65WH Bateria Para Dell Latitude E5440 E5540 VVONF 451-BBIE 970V9 9TJ2J WGCW6 
Specification:
Battery type: Li-ion
Voltage: 11.1V (Compatible with 10.8V)
Capacity: 5200mAh
Cell: 6 Cells
recharge cycles： 500
Operation time: Around 2-3 hours
 
Compatible Models：
Dell Latitude E5440 E5540
Compatible Part Numbers：
0K8HC 0M7T5F 1N9C0 7W6K0 F49WX N5YH9 NVWGM VVONF WGCW6