Remember, don't ever use the ASUS battery in high temperatures places

Charging or storing a battery in high ambient temperatures may result in permanent damage to the battery power capacity and rapidly shorten battery life. If the battery temperature is too high, the system may reduce the battery power charging capacity or even stop charging to protect the battery.

asus vivobook 14 x415ea battery

Brand new asus vivobook 14 x415ea-bv336t 7.7V 4805mAh laptop batteries
   

    Price: 109NZD
    Voltage: 7.7V
    Capacity: 4805mAh (37Wh)
    Battery cells: 2-cell
    Chemical: Li-Polymer
    Battery Color: black
    Condition: new original battery
    Warranty: 9 months

You need to make sure your original battery model number is C21N1818. And the battery has 2 versions, may check the picture above as reference.

You can have more information here: https://www.storebattery.co.nz/asus-vivobook-14-x415ea-bv336t-7.7v-4805mah-laptop-battery-store-for-new-zealand-p-465165.html