Specification: Battery type: Li-ploymer Voltage: 7.6 V(Compatible with 7.4V) Capacity: 5000mAh/38Wh Cell:3Cells recharge cycles: 500 Operation time: Around 1.5-2hours Compatible Part Number: C21N1347 2ICP4/63/134 Fit laptop models: For Asus X555 X555LA X555LD X555LN.