TAUPO New Laptop Battery Replacement for HP EliteBook 8440p 6930p 8440w ProBook 6550b 6455b 6440b 6540b 6545b Compaq 6730b 6530b [6-Cell, 11.1V] Battery type: Li-ion; 6-cell; Capacity: 49Wh; Voltage: 11.1V Compatible part numbers: 458640-542 482962-001 484786-001 HSTNN-UB68 HSTNN-UB69 HSTNN-XB24 HSTNN-XB59 HSTNN-XB61 HSTNN-XB68 HSTNN-XB69 KU531AA Brand New Replacement Product, Works as Genuine Parts Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability CE-/FCC-/RoHS-Certified for safety 12 months hassle-free warranty