The 65Wh Genuine MR90Y Battery for Dell Inspiron is a high-quality Li-Ion battery designed specifically for Dell laptops. It has a voltage of 11.1V and is compatible with various Dell Inspiron models such as 3421, 5421, 15-3521, 5521, and 3721. The battery comes in a classic black color and has a capacity of 4 to 6 battery cells, ensuring long-lasting power for your laptop. Ideal for use with Dell Inspiron, Vostro, and Latitude laptops, this genuine Dell battery provides reliable performance for your computing needs.