Portable Universal External Laptop Battery 5500mAh for Acer Sony Dell Gateway Toshiba HP IBM Samsung ASUS Compaq Epson Fujitsu Universal External Laptop Battery 5500mAh for Acer, Sony, Dell, IBM, Samsung, ASUS, Compaq, Epson, Fujitsu, Gateway, Toshiba, HP, Winbook, etc. Output Capacity: 61Wh(5500mAh) Output Voltage: 16V / 19V DC USB Output: 5.3V Charging Time: About 5 hours