5200mAh 10.8V Replacement Battery 4430S Compatible with HP Probook 4530S 4540S 4440S 4545S 4535S 4330S, fits P/N 633805-001 PR06 PR09 QK646UT QK646AA HSTNN-OB2R HSTNN-IB2R 650938-001 6-Cell