Are you tired of sub-standard batteries? With Amstron brand batteries, you will get a high performance and reliable replacement for your Toshiba Laptop. The LTO-20 is designed and manufactured to be 100% compatible with Toshiba OEM part numbers PA3098U-1BAS and PA3098U-1BRS. This battery has been put through test after test to insure quality and compatibility with the Toshiba Satellite 3000 series Battery. • Chemistry: Li-Ion • Ratings 14.8V 3900mAh Capacity • Will meet or exceed original specifications • Warranty: 1 Year