Intelligent Battery Pack This is a 6 cell Li-Ion rechargeable battery for Fujitsu Siemens Amilo A1640, A7640, M1405, M1424, M1425, M7405, M7424 , M7425, Pro V2020 and Uniwill 245, 255, 259 and WinBook V300 series laptop and notebook computers. This battery ships fully charged, tested and ready to work. This ENERGY+ item is built with the highest quality standards, safety features and has a 12 month warranty.