Is running out of battery power in the middle of a project driving you crazy? This is something you won’t have to worry about with the LTO-48 by Amstron. This battery is precision engineered to be a reliable and high performance replacement for your Toshiba Portege 3500 series notebooks. The LTO-48 is designed to replace Toshiba OEM part numbers PA3228U-1BAS and PA3228U-1BRS. Now you can have the confidence to take your laptop to the local coffee shop, without worrying about finding an outlet. . • Chemistry: Li-Ion • Ratings 10.8 Volts 3600mAh Capacity • Will meet or exceed original specifications • Warranty: 1 Year