This TOSHIBA T1200, T1200F, T1200FB, T1200H, T1200HD Resume Battery is 100% compatable with the P11AA-4T TOSHIBA T1200, T1200F, T1200FB, T1200H, T1200HD Resume Battery. Our batteries and accessories are made with high quality parts and are guaranteed to meet or exceed the original equipment manufacturers specifications at a reduced price. All batteries are tested for 100% quality control assurance. This TOSHIBA T1200, T1200F, T1200FB, T1200H, T1200HD Resume Battery includes a warranty to guarantee that it has no manufacturing defects.