This refurbished battery is specially designed for the Lenovo ThinkPad T440P, T540P, W540 and L440 laptops. With a capacity of 4400mAh and a voltage of 11.1V, this battery is a reliable and durable replacement for your old or defective battery. By choosing a refurbished battery, you not only choose a cheaper option, but also an environmentally friendly choice. Refurbished batteries are batteries that have been previously used, but have subsequently been overhauled and restored to their original condition. This means you get a quality product for a lower price, while at the same time helping to reduce electronic waste. This refurbished battery is specifically designed for the Lenovo ThinkPad T440P, T540P, W540 and L440 models and is not suitable for the T440 and T440S models. The battery has been tested and certified to meet the highest quality standards, ensuring reliable and safe performance. With a capacity of 4400mAh, you can count on a long lifespan and long-lasting performance from this battery. Whether you're on the road or working in the office, this battery will provide you with the power you need to keep your laptop functioning optimally. In short, if you are looking for a reliable and affordable replacement battery for your Lenovo ThinkPad T440P, T540P, W540 or L440 laptop, this refurbished battery is the ideal choice. With its high capacity, durability and environmentally friendly nature, this battery will meet all your expectations.