Product Description of High Quality HP Pavilion dv6-2056el Series Laptop Battery: Capacity: 4000 mAh(based on Quality Original Has more ) | Voltage: 10.8 V | Number of cells: 6 (if Original then 12 cell) Quality HP DV4 Battery – 100% compatible with your laptop, identical size, including all electronic safety measures. Highly Compatible HP DV4 Battery for HP DV4, Compaq Presario CQ40, CQ45, CQ50, CQ60, CQ70 laptops. Compatible Parts Numbers: 462889-121, 462889-122, 462889-141, 462889-142, 462889-242, 462889-261, 462889-262, 462889-421, 462889-422, 462889-541, 462889-542, 462889-721, 462889-722, 462889-741, 462889-742, 462889-761, 462889-762, 462890-121, 462890-141, 462890-142, 462890-151, 462890-161, 462890-241, 462890-251, 462890-252, 462890-421, 462890-422, 462890-541, 462890-542, 462890-721, 462890-722, 462890-741, 462890-742, 462890-751, 462890-761, 462891-141, 462891-142, 462891-161, 462891-162, 462891-422, 462891-542, 463665-007, 481193-001, 482186-003, 484170-001, 484170-002, 484171-001, 484172-001, 485041-001, 485041-002, 485041-003, 487296-001, 487354-001, 497694-001, 497695-001, 498482-001, 500028-131, 500028-141, 509458-001, 509459-001, 511872-001, 511872-002, 511883-001, 511884-001, 512413-002, 513775-001, 516477-191, 516915-001, 534115-291, 536436-001, 597598-001, 7F08A4, 7F0914, DQ-EV06055-6, EV03, EV06, EV06047, EV06055, EV12, EV12095, HSTNN-C51C, HSTNN-C52C, HSTNN-C53C, HSTNN-CB72, HSTNN-CB73, HSTNN-D875, HSTNN-DB72, HSTNN-DB73, HSTNN-I58C, HSTNN-IB72, HSTNN-IB73, HSTNN-IB79, HSTNN-IB96, HSTNN-LB72, HSTNN-LB73, HSTNN-LB79, HSTNN-N50C, HSTNN