The product is a lot of two black Li-Ion laptop batteries compatible with various Dell Latitude models such as 3340, 3440, 3540, 3480, 3580, 5340, 5540, and 5440. These batteries have a capacity of 54Wh, a voltage of 11.4V, and are manufactured by Dell. They come with a one-year manufacturer warranty and are designed specifically for Dell Latitude laptops.