Intelligent Battery Pack This is a 8 cell Lithium Ion rechargeable battery designed to fit Acer TravelMate 8100, 8101, 8102, 8103, 8104, 8106 and Ferrari 4000, 4001, 4002, 4003, 4004, 4005 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.