Battery type: Li-ion; Cells: 6-cell; Capacity: 5200MAH; Voltage: 11.1V The battery is durable and has overcurrent protection, anti-overcharge, anti-overdischarge and temperature control functions. Fit with P/N: 458640-542 482962-001 484786-001 HSTNN-144C-A HSTNN-144C-B HSTNN-145C-A HSTNN-145C-B HSTNN-C66C-4 HSTNN-C66C-5 HSTNN-C67C-4 HSTNN-C67C-5 HSTNN-C68C HSTNN-CB69 HSTNN-IB68 HSTNN-IB69 HSTNN-UB68 HSTNN-UB69 HSTNN-XB24 HSTNN-XB59 HSTNN-XB61 HSTNN-XB68 HSTNN-XB69 KU531AA Compatible Models: HP Compaq Business Notebook 6500b 6530b 6535b 6700b 6730b 6735b HP EliteBook 6930p 8440p 8440w HP ProBook 6440b 6445b 6450b 6540b 6545b 6550b 6555b COMPATIBLE WITH THE ADDITIONAL FOLLOWING MODELS: 455771-001 455771-005 455771-007 458640-542 458640-542 463310-122 463310-124 463310-125 463310-141 463310-251 463310-542 463310-544 463310-724 463310-742 482961-001 484786-001 486295-001 486296-001 489961-001 491173-543 500350-001 500372-001 581972-001 581975-001 586030-001 586031-001 593578-001