The Dell RJ40G 4145 mAh Li-Ion Laptop Battery is designed for Dell laptops, specifically compatible with Dell Precision and Dell Latitude models. With a voltage of 15.2, this black battery features 4 cells for reliable power. Whether you're working on-the-go or at home, this AC/Standard type battery ensures a consistent and long-lasting performance, perfect for keeping your device powered up throughout the day. Upgrade your laptop experience with this high-quality, compatible battery from Dell.