This IBM ThinkPad 385, 385D, 385ED 2 Position Battery Charger is 100% compatable with the CHS-TP38 IBM ThinkPad 385, 385D, 385ED 2 Position 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 IBM ThinkPad 385, 385D, 385ED 2 Position Battery Charger includes a warranty to guarantee that it has no manufacturing defects.