This notebook battery is an ideal replacement for the Asus S410UN, S4200U and VivoBook 14S S410UQ laptops. With a capacity of 3553mAh and a voltage of 11.25V, this battery ensures that your laptop can be used wirelessly for hours again without having to constantly look for a socket. The big advantage of this battery is that it is a refurbished model. This means that the battery has been used before, but has then been completely overhauled and tested to ensure that it functions like new again. This makes it not only a sustainable choice, but also an economical option. Refurbished batteries like these are an excellent way to extend the life of your laptop without the high cost of a new battery. By choosing a refurbished model you also help reduce electronic waste, which is good for the environment. This battery is specifically designed for the mentioned Asus models and fits perfectly in the battery compartment of your laptop. Installing the battery is simple and requires no technical knowledge. This way you can quickly get back to work with your laptop without any hassle. In short, this refurbished notebook battery is a smart investment for anyone looking for an affordable and environmentally friendly solution to improve the battery life of their laptop. With this battery you never have to worry about an empty battery while working or studying.