CSE Asus Replacement Battery for Asus A42-G73 G73JH G73JH-A2 G73JH-B1 G73JH-X1 G73JH-RBBX05 G73JW G73JW-A1 G73JW-XN1 G73SW G73SW-A1 G73SW-BST6 G73SW-XC1 G73SW-XN2 G73SW-XT1 series NoteBook PCs attery type: Li-ion; Capacity: 5200mAh/77WH; Cells: 8-cell; Voltage: 14.8V. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. CE-/FCC-/RoHS-Certified for safety. 24 x 7 email support,12-month hassle-free warranty. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Operation time for standard batteries(6-cell, 4400mah): Around 2 hours, the actual operation time will depend on how much electricity is required by the device and how you use it.