ATC Laptop Replacement Battery for select HP, Compaq, HP Compaq models Laptop / Notebook / Compatible with HP DV4, CQ40, HP COMPAQ DV4, CQ40, HP Pavilion DV4, Pavilion DV5, Pavilion DV6, HP KS524AA, KS526AA, HP COMPAQ 462890-541, 462890-761, HSTNN-CB72, HSTNN laptop battery