Tips: Please check carefully about your laptop model name/battery part number/battery shape and size to make sure you purchase the correct battery. 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 XPS 14 Series(All) FOR DELL XPS L401x Series FOR DELL XPS 15 Series(All) FOR DELL XPS L501x Series FOR DELL XPS L502x Series FOR DELL XPS 17/17 3D Series(All) FOR DELL XPS L701x Series FOR DELL XPS L701x 3D Series FOR DELL XPS L702x Series FOR DELL XPS L721x Series FOR DELL XPS 15 Series FOR DELL XPS 15-1591 Series FOR DELL XPS 1591 Series Compatible Part Numbers: 312-1123 312-1127 453-10186 J70W7 JWPHF R795X WHXY3.