CWK New Replacement Laptop Notebook Battery for HP ProBook 4710S 536418-001 572032-001 4510S 591998-141 591998-361 HP ProBook 4510s 513130-321 535753-001 4710s 535806-001 535808-001 HP ProBook 4510s 4710s 513129-121 513129-141 513129-361 513129-421 Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 10.8 Volt (11.1 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!