1, turn on the computer, Baidu search keyword "Xiaomi official website".
2. After entering Xiaomi official website, drop down and find the "after-sales policy".
3. Find the "price inquiry of Xiaomi's out-of-warranty maintenance materials" and click "Learn more" next to it.
4. Select the model of the mobile phone that needs to replace the battery, and enter the picture verification code number on the webpage to find the price of replacing the battery, as shown in the figure below.