The Toshiba Primary Extended Capacity Battery Pack is a 9-cell, rechargeable, Lithium Ion battery designed to work with various Toshiba series portable computers. Used as either a spare or replacement battery, the extended capacity battery pack gives you extended battery life for more computing time, watching more movies, playing more games or listening to more music. The battery pack attaches to the bottom of the notebook raising the back end by half of inch, giving you a comfortable angled typing surface. Take your office on the road without sacrificing performance, productivity or convenience with Toshiba Notebook battery packs. Battery power gives you the ability to use your computer around the house, on campus, in the office, and when you travel either on business trips or vacation. Enhanced battery life helps you stay connected and be productive wherever your work takes you. This battery pack meets or exceeds the specifications of the original battery that came with your notebook. It interfaces with the TOSHIBA Power Saver Utility on the notebook which features a charge indicator to help you monitor the available power. Features: - Snaps in and out of the battery slot in seconds - Genuine Toshiba quality and reliability - Extend the life of your Toshiba notebook while on the road! - Extended capacity battery for longer life - Take your office on the road without sacrificing performance, productivity or convenience. - Meets or exceeds the specifications of the original battery that came with the notebook - An additional battery pack provides extended power to work and play without worries - Get a spare to extend the battery life on the go for lengthy meetings, on campus and flights.