The HP 56Wh PK03XL Laptop Battery is a high-capacity 3-cell Lithium-Ion battery designed for select HP Pavilion and HP Envy laptops. With a 56Wh capacity and 11.55V output, it delivers extended power for uninterrupted productivity. Its lightweight, slim design ensures a perfect fit, while built-in safety features protect against overcharging, overheating, and short circuits. Ideal as a replacement or backup, this battery ensures reliable and long-lasting laptop performance.