CWK 7800mAh 9 Cell New High Capacity Battery for HP EliteBook 2560p 2570p 632015-542 632417-001 SX03 SX09100 HP QK645UT SX03 SX03031 SX06 SX06055 SX06055XL SX06XL SX09 HP HSTNN-UB2L HSTNN-XB2J HSTNN-XB2L QK644AA QK644UT QK645AA Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 11.1 Volt (10.8 Volt compatible) Capacity: 7800mAh (Better than 6600mAh) 90 Day Money Back. Buy with confidence!