TPE New Laptop Battery for Asus A42-UL50 UL30 A31-UL30 A32-UL30 A41-UL30 -12 Months Warranty [Li-ion 14.4V 5200mah] Battery type: Li-ion; Capacity: 5200mAh; Cells: 8-cell; Voltage: 14.4V; 100% brand new from manufacturer. Under 100% Aging Test. Up to 501 cycles life, low self-discharge, no memory effect; Dual IC chips provide protection against short circuit, over-discharge, overcurrent. CE/FCC/RoHS certified for product safety. 24/7 email support, 13-month hassle-free warranty. Grade A Cell ensures fast charging and low power consumption; Built-in circuit protection ensures both safety and stability. Operation time for standard batteries(6-Cell, 4400mAh): Around 3 hours, the actual operation time will depend on how much electricity is required by the device and how you use it.