Need a battery for HP Laptops/Notebooks with the following model numbers: Elitebook 8530p, 8530w Mobile Workstation, ? BTI has you covered with our premium 8 cell LiIon battery. This product has been engineered to meet or exceed the original manufacturer's specifications and replaces the original HP part numbers KU533AA, 458274-341, 458274-422, 484788-001, 501114-001, NBP8A82, 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.