The HP D03XL Laptop Battery is a high-quality Lithium-Ion replacement battery designed for compatibility with select HP Envy 13-AD series laptops. With a voltage of 11.55V and a capacity of 11.55Wh, it ensures reliable performance and extended battery life. Featuring genuine HP components, this battery is engineered for optimal efficiency and durability. It is compatible with part numbers AD03XL, HSTNN-DB8D, 921409-2C1, 921439-855, and 921409-271, making it an ideal replacement for worn-out or faulty laptop batteries.