HP 550 . COMPAQ 510 511 610 615 . Business Notebook 6720s 6720s/CT 6730s 6730s/CT 6735s 6820s 6830s / PART: 451085-141 451086-121 451086-161 451568-001 456864-001 GJ655AA HSTNN-IB51 HSTNN-IB52 HSTNN-IB62 HSTNN-OB62 HSTNN-XB51 HSTNN-XB52 GJ655A HSTNN-I48C-A HSTNN-I48C-B HSTNN-I49C HSTNN-LB51