CWK High Performance Battery for Asus A32-U53 A31-U53 A41-U53 A42-U53 for Asus U52 U52F Laptop Notebook Computer [14.4V 47Wh 5200mAh (4400mAh compatible)] 24 Months Warranty Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 14.8 Volt (14.4 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!