CWK 7800mAh 9 Cell Capacity Battery for HP EliteBook 2560p 2570p HSTNN-UB2L 632015-542 HP 632016-542 632423-001 632417-001 632419-001 632421-001 SX09 HP 463309-241 HSTNN-UB2K QK644AA QK645AA Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 11.1 Volt (10.8 Volt compatible) Capacity: 8800mAh / 12 Cell 90 Day Money Back. Buy with confidence!