Xiaomi mice usually use a size 5 battery, which is one of the most common battery models.
Mice such as the Mi Wireless Bluetooth Dual-Mode Mouse Silent Edition, the Custom Wireless Tri-Mode Mouse E318, the Mi Wireless Mouse Youth Edition 2 and the Youth Edition 3 all use No. 5 batteries.
However, there are also some Xiaomi Bluetooth mice that use a built-in rechargeable battery, such as the Xiaomi Xiaoai Mouse, which does not require the use of a normal battery because it has a built-in lithium-ion rechargeable battery.
If you need to replace the battery of your Xiaomi mouse, make sure you buy the correct battery model. The size 5 battery is a common battery model that can be purchased in many stores and online. If you are not sure how to replace the battery, you can check the user manual or **tutorial of your Mi Mouse to learn the correct replacement steps.
Please note that if you are using a Xiaomi Bluetooth mouse with a built-in rechargeable battery, you can charge the mouse via a USB cable without replacing the battery.
While charging, the mouse's indicator will show the charging status. When the battery is fully charged, the indicator light will turn off and the mouse can be used for a while.