6720s Battery For HP Compaq 610 615 550 6735s 6820s 491278-001 HSTNN-IB51 6 cell
Battery for HP Compaq 610 615 550 6720s 6730s 6735s 6820s 491278-001 HSTNN-IB51. Compaq 610. For HP 550. Cell: 6 Cells. Step 3: Disconnect the cable connected to the battery and then take out the battery.