Original Model Number: 513130-321, 535753-001, 535808-001, 572032-001, 591998-141, 593576-001, HP4510BAT-11, HSTNN-1B1D, HSTNN-I60C-5, HSTNN-I61C-5, HSTNN-I62C-5, HSTNN-I62C-7, HSTNN-IB88, HSTNN-IB89, HSTNN-IC61C-5, HSTNN-LB88, HSTNN-OB88, HSTNN-OB89, HSTNN-W79C-7, HSTNN-XB88, HSTNN-XB89, NBP8A157B1, NBP8A157B1, NZ375AA, 513129-421, HSTNN-162C-7, HSTNN-161C-5, HSTNN-160C-5 Suitable Model: HP Probook 4510s, 4515s, 4710s, 4720s, 4510s/CT, 4515s/CT, 4710s/CT, 4720s Base Model, 4720s(ENERGY STAR) What's in the box 1 X Battery