593576-001 Battery Replacement for HP Probook 4720s Voltage: 14.4V/14.8V Capacity: 4400mAh/5200mAh No. of cell: 8 Elitebook 8560W Mobile Workstation, Elitebook 8570W Mobile Workstation, Elitebook 8760W Mobile Workstation, Elitebook 8770W Mobile Workstation, FIT for : HP Probook 4510S / 4510s/CT / 4515S / 4515S/CT / 4710S / 4710S/CT 100% new replacement item, fast shipping from US, 1 Year Warranty, 30 days money back guarantee! Any problem, please contact us directly. Please make sure that the battery part numbers listed in the description matches the battery part number on your original battery before you purchase