EPC CBD&trade; 9-Cell Battery For HP EliteBook 8440W 8440P 6930p Compaq 6735b 6730b 6700b 6535b Battery type: Li-ion; Capacity: 7800mAh; Cells: 9-cell; Voltage: 10.8v 100% New from Manufacturer CE-/FCC-/RoHS-Certified for safety Built-in circuit protection ensures both safety and stability 30 days money back guarantee & 60 Days warranty