Replacement Battery Details : Model HP DV4 Color Black Battey type Lithium-ion Capacity 4400 mAh/ 8800mAh Voltage 10.8V Cell 6 Compitable Battery P/N 462889-121 , 462889-421 , 462890-151 , 462890-161 , 462890-251 , 462890-541 , 462890-751 , 462890-761 , 482186-003 , 484170-001 , 484170-002 , 484171-001 , 485041-001 , 485041-003 , 487296-001 , 487354-001 , 497694-001 , 498482-001 , EV06055 , HSTNN-CB72 , , HSTNN-CB73 , HSTNN-DB72 , HSTNN-DB73 , HSTNN-IB72 , HSTNN-IB73 , HSTNN-LB72 , HSTNN-LB73 , HSTNN-UB72 , HSTNN-UB73, HSTNN-XB73 , KS524AA , KS526AA , HSTNN-XB72