Adaptive Battery on the Xiaomi 15 Ultra is designed to extend battery life, but sometimes it does the opposite. You may notice your phone losing power faster than expected even with light use. This usually happens when background restrictions, app behavior, or system learning conflicts cause excessive drain instead of savings. The fixes below focus on restoring balance so Adaptive Battery works as intended in 2025.
Why Your Xiaomi 15 Ultra Battery Drains Quickly With Adaptive Battery On
- Adaptive Battery is still learning your usage patterns.
- Certain apps are restricted too aggressively and keep restarting.
- Background activity limits cause repeated wake-ups.
- System optimization settings are conflicting with battery management.
- Recent updates introduced temporary power management bugs.
Restart the Phone to Reset Battery Services
Adaptive Battery relies on background services that can become unstable over time. Restarting the device refreshes these services and clears temporary system processes that may be draining power.
Open Settings, and then tap About phone.
Tap Restart, and confirm the action.
After rebooting, monitor battery usage for a few hours.
Temporarily Turn Off Adaptive Battery
Disabling Adaptive Battery helps determine whether it is the actual cause of the drain. This also resets its learning behavior, which can become inaccurate after updates or usage changes.
Open Settings, and then tap Battery.
Tap Adaptive Battery, and turn it off.
Use the phone normally for a day and compare battery performance.
Check Battery Usage by Apps
Some apps consume more power when Adaptive Battery limits them incorrectly. Reviewing battery usage helps identify apps that are causing constant background activity.
Open Settings, and then tap Battery.
Tap App battery usage, and review the top consumers.
Restrict or uninstall apps that show unusually high usage.
Set Important Apps to No Restrictions
Messaging, navigation, and cloud apps may misbehave when restricted too aggressively. Allowing them to run normally prevents repeated restarts that drain battery.
Open Settings, and then tap Apps.
Select the app, tap Battery saver, and choose No restrictions.
Repeat this for apps you use frequently.
Update System and Apps
Battery drain issues are often addressed through system updates and app optimizations. Running outdated software can cause Adaptive Battery to behave inefficiently.
Open Settings, and then tap About phone.
Tap System update, and install any available updates.
Afterward, open the Play Store and update all apps.
Recalibrate the Battery
Battery calibration helps the system correctly estimate remaining charge. Incorrect estimates can cause Adaptive Battery to overcompensate and drain power faster.
Charge the phone to 100 percent, and keep it plugged in for 30 minutes.
Use the phone until it drops below 10 percent, then power it off.
Charge it back to full without interruption.
Adaptive Battery should help your Xiaomi 15 Ultra last longer, not shorter. Once conflicts are resolved and usage patterns stabilize, battery performance usually improves within a few days.
FAQs
Does Adaptive Battery need time to learn my habits?
Yes. It can take several days of normal use before Adaptive Battery accurately adjusts background activity.
Should I keep Adaptive Battery on or off?
Keep it on if your battery improves after recalibration and app adjustments. Turn it off if you consistently experience faster drain.
Can third-party apps interfere with Adaptive Battery?
Yes. Task killers, cleaners, and aggressive optimization apps often conflict with built-in battery management and should be avoided.
