This product is a lot of 6 Dell Chromebook 3100 batteries with a capacity of 42Wh and a voltage of 11.4V. The batteries are black in color and have 3 cells. They are compatible with Dell Chromebook 3100 laptops and are designed specifically for Dell Latitude and Chromebook models. These Lithium-Ion batteries come with an item length of 253mm, height of 3mm, and width of 97mm, making them perfect for extended use. The batteries do not come with a manufacturer warranty, but they are reliable and high-quality components from Dell.