This is a Brand New IBM 9 Cell Boxed Original Product.Stay unplugged longer with the help of a spare ThinkPad system battery. Help increase your productivity due to longer system run times. Get the power your need whenever and wherever you need it.This is a 9 Cell Li-Ion Battery. Compatible IBM Models: ThinkPad T40: T40, T40p. ThinkPad T41: T41, T41p. ThinkPad T42: T42, T42p. ThinkPad T43: T43...