High Performance Lithium Ion Main Battery Pack for Hewlett-Packard Pavilion Notebook dv4-1047tx OEM Part # equivalent: HSTNN-IB79, HSTNN-Q34C,HSTNN-C51C, HSTNN-C52C, HSTNN-C53C, HSTNN-W48C, HSTNN-W49C, HSTNN-W50C, HSTNN-DB72, HSTNN-IB72, HSTNN-UB73, B-5326H |