TPE New Laptop Battery for Asus A32-A8 A8 A8000 N80 F80 X80 Z99 70-NF51B1000 90-NF51B1000 NB-BAT-A8-NF51B1000 [11.1V 6-cell 5200mAh] Battery type: Li-ion; Capacity: 5200mAh 58WH; Cells: 6-cell; Voltage: 11.1V. 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.