ORIGINAL MODEL NUMBER 451085-141, 451085-661, 451086-001, 451086-121, 451086-121, 451086-161, 451086-161, 451086-361, 451086-421, 451086-621, 451545-361, 451568-001, 451568-001, 456623-001, 456864-001, 456865-001, 491278-001, GJ655AA, GJ655AA, HP-6520, HP6720BAT-11, HSTNN-FB51, HSTNN-FB52, HSTNN-I39C, HSTNN-I40C, HSTNN-I48C, HSTNN-I48C-A, HSTNN-I48C-B, HSTNN-I49C, HSTNN-I50C-B, HSTNN-I54C, HSTNN-I54C, HSTNN-IB51, HSTNN-IB52, HSTNN-IB62, HSTNN-LB51, HSTNN-OB51, HSTNN-XB51, HSTNN-XB52, 451086-362, DD06, HP615 SUITABLE MODEL Compaq 510 550 610 615 HP 510 550 610 615 HP BUSINESS NOTEBOOK 550 6000 6720 6720S 6720S/CT 6730S 6730S/CT 6735S 6820 6820S 6830 6830S What's in the box 1 X Battery