What to do if the Xiaomi Smart Band 9 Pro drains fast and has short battery endurance?

When the band is connected to the APP, the band can be used for 21 days in typical endurance mode by default. After enabling AOD, the band can be used for 10 days.
If the band drains fast and has short battery endurance, please refer to the following details:
1. It takes about 1 hour to charge the band, please confirm whether it is fully charged first;
2. After charging, update the band firmware to the latest version  for use;
3. Check whether breathing rate monitoring function is enabled in sleep settings, the advanced monitoring is enabled in sleep settings, AOD is enabled, the screen is always on during workouts, there are frequent message reminders and screen on, all-day stress monitoring is enabled, and all-day blood oxygen monitoring is enabled or blood oxygen monitoring is used frequently. The use of the above functions will cause the battery endurance of the band to shorten. You can disable them and restart it and then use it to observe;
4. If the function that consumes power quickly is not enabled, you can restore the band to factory settings, reconnect it, and continue to use it for observation;
5. If the function that consumes power quickly is not enabled and the band consumes power quickly, you can submit feedback on the Mi Fitness APP and the relevant technologies will be optimized.
Note:
The Xiaomi Smart Band 9 Pro supports the function of battery management. You can go to [Settings] >> [Battery] >> [Optimization] on the band to check the items enabled that consume more power. You can also check the battery endurance after disabling the functions.