CSEXCEL New Laptop Battery [Li-ion 8-cell 5200mAh] for Asus U30JC,U30SD,U35F,U35JC,U40SD,U45JC,UL30A,UL30VT,UL50AG,UL50A,UL50V,UL50VG,UL50VT,UL80V,UL80VT,UL80A,UL80VS,UL80AG,UL80JT-12 Months Warranty Battery 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: the actual operation time will depend on how much electricity is required by the device and how you use it.