Keep your Asus VivoBook running smoothly with this genuine replacement battery!

Designed specifically for models A509, D509, F509, M509, X509, A409, D409, F409, M409, and X409, as well as the F509M, F509MA, X509M, X509MA, X509DA, X509BA, X509F, X509FA, X509FB, X509FJ, X509FL, X509J, X509JA, X509JB, and X509JP series, this B21N1818-3 battery ensures reliable power for your daily tasks.

Enjoy longer work sessions and seamless entertainment without the worry of a dying battery. With its high capacity and efficient design, you can power through presentations, creative projects, and even marathon gaming sessions.

Upgrade your laptop's performance and stay connected with confidence using this original equipment manufacturer (OEM) replacement battery.