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：

 For Dell Latitude E5440 E5540 

 

Compatible Part Numbers：

0K8HC 0M7T5F 1N9C0 7W6K0 F49WX N5YH9 NVWGM VVONF WGCW6