BeOne&reg;Replacement Laptop Battery for Hp CQ40 CQ41 CQ45 CQ61 CQ70 CQ71 G50 G60 G61G70 G71 Series Pavilion DV4 Series Fits P/N:462890-161 462890-151 462890-251 462890-421,462890-541 511872-001 513775-001 516915-001 536436-001 HSTNN-C51C HSTNN-C52C HSTNN-C53C HSTNN-CB72 HSTNN-CB73 [Li-ion 6-cell 5200mAh/56WH]