The T54FJ 8858X M5Y0X E6420 E6430 Laptop Battery is a black Li-Ion battery designed for various Dell Latitude models including E5420, E5430, E5520, E6530, E6540, and more. With a capacity of 65WH and 6 battery cells, this unit is compatible with Dell Inspiron, Vostro, and Latitude laptops. Manufactured by natno and backed by a 1-year warranty, this high-quality battery ensures reliable performance and long-lasting power for your Dell laptop. Made in China, this battery is a fantastic choice for those looking to extend their laptop's battery life and keep their device powered up for extended periods.