The Lenovo Internal Lithium-Ion Battery 3-Cell 45Wh (L17L3P51) offers a robust power solution for your laptop, boasting a capacity of 4050 mAh. Engineered for longevity and reliability, this battery enhances your device's performance, ensuring you can enjoy extended usage without the hassle of frequent recharges. Its sleek design fits perfectly within your laptop, providing a seamless integration that supports your productivity and entertainment needs effortlessly.