This IBM ThinkPad 1436i AC Adapter is 100% compatable with the TI1507 IBM ThinkPad 1436i AC Adapter. 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 IBM ThinkPad 1436i AC Adapter includes a warranty to guarantee that it has no manufacturing defects.