Specifications: 9 Cell, Li-ion battery, Rated at 11.1V 7800mAh Compatible Models: HP Compaq Business Notebook 6500b 6530b 6535b 6700b 6730b 6735b HP EliteBook 6930p 8440p 8440w HP ProBook 6440b 6445b 6450b 6540b 6545b 6550b 6555b Fits Parts Number list: 458640-542 482962-001 484786-001 HSTNN-144C-A HSTNN-144C-B HSTNN-145C-A HSTNN-145C-B HSTNN-C66C-4 HSTNN-C66C-5 HSTNN-C67C-4 HSTNN-C67C-5 HSTNN-C68C HSTNN-CB69 HSTNN-IB68 HSTNN-IB69 HSTNN-UB68 HSTNN-UB69 HSTNN-XB24 HSTNN-XB59 HSTNN-XB61 HSTNN-XB68 HSTNN-XB69 KU531AA CE-/RoHS-/FCC- Certified and Built-in circuit protection ensure both safety and stability.100% Brand New from Manufacturer. Rechargeable Up to 600 times over life of battery; Equipped with Higher Quality Cells yet has Same Size & Shape as an OEM Battery This Product has 12 Months Replacement Warranty! With Hassle-free Customer Service