Fancy Buying&reg; HP8530-8 - 8 cells - Laptop Battery For Hp EliteBook 8530p 8530w 8540p 8540w 8730p 8730w 8740w P/N's: 501114-001 458274-341 HSTNN-OB60 HSTNN-LB60 (5200mAh) Battery type: Li-ion; Capacity: 5200mAh/77Wh;Voltage: 14.8V;Cells: 8-cell. Fancy Buying products are Certified by CE, FCC for safety. Strict guidelines for compatibility, and standards compliance for environment safety. Compatible Models: HP EliteBook 8530p / 8530w / 8540p/ 8540w / 8730p / 8730w / 8740w; HP ProBook 6545B Compatible Part Numbers: 458274-421 / 484788-001 / 493976-001 / 501114-001 / HSTNN-LB60 / HSTNN-OB60 / HSTNN-XB60 / KU533AA Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Brand new from Manufacturer. Up to 500 recharge cycles over the life of the battery. Operation time for standard batteries(8-cell, 5200mah): Around 3-4 hours, the actual operation time will depend on how much electricity is required by the device and how you use it. 24 x 7 email support, 12-month service.