Compatible 8 cell 5200 mAh battery for HP Elitebook 8530p 8540p 8540w 8730w For Notebook Battery Rechargeable 5200 mAh 69 Wh 14.4 V DC 1 - Office Depot
Amazon.com: NinjaBatt Battery for HP 8540W 493976-001 8740W 8540P AV08 8530P 8530W 8730W HSTNN-LB60 458274-363 458274-421 458274-422 HSTNN-I43C HSTNN-OB60 HSTNN-W46C High Performance [8 Cells/4400mAh/63Wh] : Electronics