Need a battery for HP Laptops/Notebooks with the following model numbers: 6530b, 6535b, 6730b, 6735b; Elitebook 6930p? BTI has you covered with our premium 6 cell LiIon battery. This product has been engineered to meet or exceed the original manufacturer's specifications and replaces the original HP part numbers KU531AA, 463310-542, 484786-001, 486296-001, 491173-542, All BTI batteries are manufactured and tested under our stringent quality standards and come with an industry leading 18 month manufacturer's warranty. BTI... True to the original.