This TOSHIBA Satellite Pro 4260, 4280 Series Battery Charger is 100% compatable with the CHS-T400 TOSHIBA Satellite Pro 4260, 4280 Series Battery Charger. 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 Satellite Pro 4260, 4280 Series Battery Charger includes a warranty to guarantee that it has no manufacturing defects.