The product is a rare, new, and tested battery compatible with HP OmniBook 800, 800CS, 800CT, and 600CT laptops. It is a black Li-Ion battery made in the United States specifically designed for the HP OmniBook product line. The battery is reliable and ideal for individuals looking to replace their old or worn-out laptop battery with a high-quality compatible option. Rare find in sealed unopen package. Open battery test to hold charge 100%. You will receive a Brand New Sealed in bag, not the open demo battery tested in the laptop. Laptop is not included in the sale listing. ASIS. Not return.