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. New High Capacity Battery for HP EliteBook 8440P 8440W ProBook 6450B 6455B 6540B 6545B 6550B 6555B 6930p 8440p 8440w 458640-542 6440b KU531AA TD06 TD06055 HP Compaq 6535b 6530b 6730b 6735b 6930p KU531AA 6700b 6500b HP HSTNN-XB69 HSTNN-XB68 HSTNN-XB61 HSTNN-XB59 HSTNN-UB69 HSTNN-IB69 HP EliteBook 6930p 8440p 8440w HSTNN-IB68 HSTNN-IB69 HSTNN-I45C HSTNN-UB68 HSTNN-UB69 486295-001 HSTNN-I44C HSTNN-I45C Compatible 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 Security & Reliability: Our batteries are assembled from top quality material and circuit boards to ensure fast charges and low power consumption, 100% New from Manufacturer, Overcharge and Overdischarge Circuit Protection, Ov