Does the Xiaomi Smart Band 9 support battery saver mode?

Yes, you can directly set the band to the battery saver mode in the band settings. After turning the mode, the band will only record basic time, steps and basic sleep information.
The Bluetooth and other functions of the band (Raise to wake, Heart rate, Blood oxygen monitoring, etc.) will be turned off, and it cannot be connected to the APP for data synchronization.
In the battery saver mode, a dark interface will be displayed, and only press and hold the interface, it can exit (Press and hold for more than 0.5s to trigger the exit of the battery saver mode, and continue to press and hold for about 3s to exit the battery saver mode ). The battery saver mode does not support left, right, up, or down sliding.
To set the battery saver mode on your band, please refer to the following steps:
Enter the interface of the band >> select [Settings] >> [Battery Saver mode].
Exit the battery saver mode: Press and hold the band screen for about 3 seconds or plug in the charger, the band will exit power saving mode.
Note:
When the band is in the battery saver mode, Bluetooth will be automatically disconnected and the raise-to-wake function will also be turned off.