BATERIJA ZA HP Compaq 6720s 6730s 6735s 6820s 6830s 10.8V 4400 mAh Neki od odgovarajućih modela su HP 550 HP Business Notebook 6720S 6720s 6730s 6735s 6820s 6830 Compaq 511 515 520 550 610 615 Odgovarajuće oznake baterija su HSTNN-IB52 451085-141 451086-121 451086-161 451568-001 456864-001 GJ655AA HSTNN-IB51 HSTNN-OB51 HSTNN-XB51 HSTNN-XB52 491278-001 HSTNN-LB51 HSTNN-XB51 451085-141 451086-121 51086-161 451568-001 456864-001 GJ655AA HSTNN-IB51 HSTNN-IB52 HSTNN-OB51 HSTNN-XB52 491278-001 HSTNN-LB51