CWK&reg; HIGH PERFORMANCE Extended Battery for HP 6530b 6535B 6730b 6735b 6930p 8440p 8440w 6440b 6445b 6450b 6540b 6545b 6550b 6555b 458640-542 HSTNN-UB69 HSTNN-XB59 HSTNN-XB69 482962-001 HSTNN-XB61 484786-001 HSTNN-UB68 HSTNN-XB24 HSTNN-XB68 KU531AA - 9 Cell 24 Months Warranty Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 10.8 Volt (11.1 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!