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Need a battery for Compaq-HP Laptops/Notebooks with the following model numbers: Presario CQ32, CQ42, CQ56, CQ62, CQ72, CQ430, CQ630; HP G4, G6, G7; Pavilion DV3-4000, DM4-1000, DV5-2000, DV6-3000, DV7-4000; HP Envy 17 (9-cells) ? BTI has you covered with our premium 9 cell LiIon battery. This product has been engineered to meet or exceed the original manufacturer's specifications and replaces the original Compaq-HP part numbers 593015-541, 593556-001, WD549AA, WD549AA#ABB, MU09, MU09XL. 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.