Get longer battery life and improved laptop performance with a new Asus B21N1818 battery. This Asus B21N1818 battery is compatible with the ExpertBook P1, VivoBook 15 and VivoBook 17 models. Additional compatible models are listed below.

Asus made four different versions of the B21N1818 battery. This is the Type 4 version of the B21N1818 battery. This battery has two tabs on the top and two tabs on the bottom. To make sure you order the correct battery you may need to open up your laptop and see what replacement battery you may need. It should match up with the photo on this page. To compare the different batteries and make sure you order the correct replacement, visit our B21N1818 battery page for all the versions.

We use the highest quality lithium-ion batteries that charge faster, last longer and weigh less than cheaper, lower quality batteries. Lower quality batteries can wear out in as little as six months. Our batteries can last up to 5 years if properly cared for.

This Asus B21N1818 battery is 100% compatible with the original Asus battery specifications and is individually tested and backed by a 1 Year warranty.