Specification: Battery type: Li-Polymer Voltage: 11.4V Capacity:47Wh （Short Size）-Only Fit for 42Wh Battery!!! Cell:3 Cells recharge cycles： 500 Operation time: Around 1.5-3hours Compatible Part Number: NGGX5 954DF JY8DF XWDK1 451-BBUM 451-BBUJ XKWC7 451-BBUJ 53VJ6 451-BBUL Compatible Model: For Dell Latitude 12 E5270 Series Notebook Series For Dell Latitude 14 E5470 Series Notebook Series For Dell Latitude 15 E5570 Series Notebook Series For Dell Precision 15-3510 (P48F001) Series Notebook.