When Power Saving mode is not working on your Xiaomi 15 Ultra, the phone may continue draining battery faster than expected. You might notice background apps still running, high screen activity, or performance staying the same even after enabling the feature. This usually happens because certain system settings, app permissions, or battery optimizations are preventing Power Saving mode from applying correctly.
Why Power Saving Mode Is Not Working on Your Xiaomi 15 Ultra
- Battery optimization is disabled for key system apps.
- Performance mode is overriding power restrictions.
- Background apps are exempt from battery limits.
- System cache or temporary glitches are interfering.
- Software bugs after a recent update.
1. Make Sure Power Saving Mode Is Actually Enabled
Sometimes Power Saving mode appears enabled, but the system does not fully apply the restrictions. Turning it off and back on forces the phone to reapply battery limits properly.
Open Settings, and then tap Battery.
Tap Power saving mode, and then toggle it off and back on again.
Lock the screen for a few seconds and check if background activity reduces.
2. Turn Off Performance or Boost Modes
Performance modes prioritize speed and responsiveness. When enabled, they can override Power Saving mode and prevent it from working as intended.
Open Settings, and then tap Battery.
Tap Performance mode, and then turn it off.
Re-enable Power Saving mode and monitor battery behavior.
3. Check App Battery Restrictions
Some apps are allowed to run freely in the background, even when Power Saving mode is active. These apps can drain battery and make it seem like the feature is not working.
Open Settings, and then tap Apps.
Tap App battery saver, and then review apps set to No restrictions.
Change heavy apps to Restrict background activity.
4. Disable Background Activity for Problem Apps
Social media, streaming, and navigation apps often bypass power limits. Restricting them manually helps Power Saving mode work more effectively.
Open Settings, and then tap Apps.
Tap Manage apps, and then select a battery heavy app.
Set its battery usage to Restrict.
5. Restart the Phone
Temporary system glitches can prevent battery features from activating correctly. A restart refreshes system services and battery management components.
Press and hold the Power key, and then tap Restart.
Wait for the device to boot up fully.
Turn on Power Saving mode again and observe the battery drain.
6. Update the System Software
Battery management improvements are often included in system updates. Running outdated software can cause Power Saving mode to malfunction.
Open Settings, and then tap About phone.
Tap System update, and then check for available updates.
Install the update and test Power Saving mode again.
7. Reset Battery and Performance Settings
If nothing works, resetting battery related settings can remove conflicts without affecting your personal data. This restores default power management behavior.
Open Settings, and then tap Battery.
Tap Reset battery settings, and then confirm the action.
Enable Power Saving mode once the reset completes.
Power Saving mode on the Xiaomi 15 Ultra should noticeably limit background activity and extend battery life. Once conflicting settings are disabled and optimizations are applied correctly, the feature works reliably again and helps you get through the day with fewer charges.
FAQs
Why does my Xiaomi 15 Ultra still drain battery in Power Saving mode?
Some apps may be excluded from battery limits. Checking app level battery restrictions usually resolves this issue.
Does Power Saving mode reduce phone performance?
Yes, slightly. It limits background processes and reduces system performance to conserve battery, which is expected behavior.
Should I always keep Power Saving mode turned on?
It depends on your usage. Power Saving mode is helpful during long days or low battery situations, but you can turn it off when you need full performance.
