In Stock. Asus Smartwatch Battery Li-polymer Battery Fits Asus, W1502qf, Zenwatch 2, 3.7v, 270mah CS-AUW502SH $32.43 All our batteries are brand new, The battery is an equivalent battery to the manufacturers as shown below. They are made with premium Lithium Ion cells and are rated as shown in the specifications. We want you to get the right battery first time. We will select the appropriate battery for you and guarantee that fitment. Email or live chat and you can... Add to cart