Li-ion 11.1V, 5200mAh

Replace:

HSTNN-IB51, HSTNN-IB52, HSTNN-IB55, HSTNN-I40C

HSTNN-I60C, HSTNN-I62C,  456864-001, 484785-001

Fits Models:

HP 550 Series

HP COMPAQ Business Notebook 6720s, 6820s Series