The Dell RJ40G Latitude 5520 15.6" Genuine Laptop Battery is a high-quality Li-Ion battery designed specifically for Dell Latitude 5520 laptops. With a capacity of 63Wh and a voltage of 15.2V, this battery provides reliable power for extended use. It is compatible with the Dell Latitude product line and is manufactured in China. This genuine Dell battery ensures a perfect fit and optimal performance for your laptop, making it an essential accessory for on-the-go productivity.