Extended Battery for Hewlett Packard iPAQ hx2000 series High Quality, high capacity, light weight rechargeable DC 3.7V Li-Ion 2880mAh battery. Longer battery life than the original battery that comes with the PDA. Best replacement for the original HP iPaq hx2000 / hx2190 / hx2400 / hx2415 / hx2490 / hx2495 / hx2700 / hx2755 / hx2790 / hx2795 series battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection, with built-in battery life microchip.