Premium 69Wh c1jkh battery: Our premium 69Wh c1jkh battery is designed specifically for your Dell laptop, providing you with long-lasting power and performance. This top-quality battery ensures maximum productivity for your device. Our 4RXFK battery is expertly designed to fit Dell XPS L421X, XPS 14 L421X, and XPS 14 Ultrabook laptops, ensuring a secure and reliable connection with part numbers 4RXFK, C1JKH, and FFK56. Grade A Polymer Cell l421x battery: The replacement battery for l421x contains Grade A Polymer Cells for optimal performance. These high-quality cells guarantee durability and high capacity, ensuring your device stays powered for longer periods. Experience longer-lasting power for your Dell L421X battery with a 69Wh capacity, allowing you to work, play, and stream without constant recharging.