This SONY VAIO 505TR, 505TS Super Slim Series Resume Battery is 100% compatable with the FL6/V11H-MFX SONY VAIO 505TR, 505TS Super Slim Series 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 SONY VAIO 505TR, 505TS Super Slim Series Resume Battery includes a warranty to guarantee that it has no manufacturing defects.