Specifications: - Battery type: Li-ion - Voltage: 10.8V - Capacity: 4400 mAH - Brand: Unbranded /OEM Compatible Models. HP COMPAQ PROBOOK 4330S, HP COMPAQ PROBOOK 4331S, HP COMPAQ PROBOOK 4430S, HP COMPAQ PROBOOK 4431S, HP COMPAQ PROBOOK 4435S, HP COMPAQ PROBOOK 4436S, HP COMPAQ PROBOOK 4440S, HP COMPAQ PROBOOK 4441S, HP COMPAQ PROBOOK 4445S, HP COMPAQ PROBOOK 4446S, HP COMPAQ PROBOOK 4530S, HP COMPAQ PROBOOK 4535S, HP COMPAQ PROBOOK 4540S Compatible part numbers 633733-151, 633733-1A1, 633733-321, 633735-351, 633805-001, 650938-001, HSTNN-DB2R, HSTNN-I02C, HSTNN-I97C-3, HSTNN-I97C-4, HSTNN-I98C-5, HSTNN-I99C-3, HSTNN-I99C-4, HSTNN-IB2R, HSTNN-LB2R, HSTNN-OB2R, HSTNN-OB2T, HSTNN-Q87C-4, HSTNN-Q87C-5, HSTNN-Q88C-4, HSTNN-Q88C-5, HSTNN-Q89C, HSTNN-XB2E, HSTNN-XB2F, HSTNN-XB2G, HSTNN-XB2H, HSTNN-XB2I, HSTNN-XB2N, HSTNN-XB2O, HSTNN-XB2R, HSTNN-XB2T, HSTNN-XB3C, K646AA, LC32BA122, PR06, PR06Q, PR09, QK646AA, QK646UT, QK647AA What's in the box 1 X HP Probook 4530S PR06 Compatible Replacement Laptop Battery