HP Business 6720s, 6730s, 6820s, 6830s, HP 550 Li-ion 10,8V 5200mAh /56Wh cS

451085-141, 451086-121, 451086-142, 451086-161, 451568-001, 456864-001, GJ655AA, HSTNN-IB51, HSTNN-IB52, HSTNN-XB51, HSTNN-XB52, HSTNN-OB51, KU532AA, NBP6A96B2, 491278-001HP / COMPAQ: 510, 511, 550, 610, 615, Business Notebook 6720s, Business Notebook 6720s/CT, Business Notebook 6730s, Business Notebook 6730s/CT, Business Notebook 6735s, Business Notebook 6820s, Business Notebook 6830s