Battery savings are one of the most pressing topics for Xiaomi smartphone owners, especially when it comes to budget models with a battery capacity of up to 4000 mAh or flagships that actively use resource-intensive functions. Even with the optimizations in MIUI 14/15, many users find that the phone runs out in half a day at moderate load, the reason lies not only in the hardware, but also in the wrong power settings, which are by default focused on performance, not autonomy.
In this article, we’ll break down all the optimization options available, from the basic settings in the battery menu to hidden features that Xiaomi doesn’t advertise. You will learn how to disable unnecessary background processes, configure application autoruns, use ultra-low consumption modes and even modify system parameters without root rights. MIUI, which are not in the stock Android, for example, "deep optimization" and adaptive lighting AMOLED-screen.
Important: all instructions are relevant for Xiaomi, Redmi and POCO smartphones based on MIUI 12-15 (including global and Chinese firmware versions). If you have a HyperOS device, some of the points may differ, we will also mention this separately.
1. Basic power consumption settings in MIUI
Start by checking the basic parameters that directly affect battery consumption, most of which are available through the standard menu, but many users ignore them, relying on "automatic optimization."
Open Settings → Battery. Here you are interested in three key sections:
- 🔋 Battery mode is a choice between Balanced, Energy Saving and High Performance. For maximum autonomy, choose Energy Saving, but note that this will limit background activity and reduce the brightness of the screen.
- 📊 Usage statistics show which apps are most consuming, and if messengers or social media are leading the way, they need to be optimized separately (more on this below).
- ⚡ Fast charging -- turn it off if you recharge your phone 10 to 20 percent frequently. Fast charging heats the battery, which accelerates cell degradation.
Note Battery Optimization (some firmwares have it hidden under "Advanced"), where you can manually add apps to your optimized list, which will limit their background activity, for example, if you rarely use TikTok or Instagram, add them to this list.
2. Optimization of background processes and autostart
One of the biggest power leaks is apps that run in the background even when you're not using them. MIUI allows you to flexibly manage autoruns and background activity, but those settings are hidden deep in the menu.
Go to Settings → Applications → Application Management → Auto Run. Here you will see a list of all programs that are allowed to run automatically when you turn on your phone or connect to the network. Turn off autorun for all applications except mission-critical ones (such as instant messengers or banking programs).
Check the background activity:
- Open Settings → Battery → Battery Optimization
- Click on the three dots in the top right corner and select All Apps.
- For each application, set the Background Activity Limit mode or Deep Optimization (if available).
Disable Auto-Run for Unnecessary Applications
Install “Deep Optimization” for rarely used programs
Check the "Exceptions" list in the battery settings
Reboot your phone after the changes-->
Be careful with system applications (e.g. com.miui.securitycenter) that may cause MIUI to work in an unstable way. If you are not sure, leave it by default.
⚠️ Note: Some apps (such as WhatsApp or Telegram) may stop receiving notifications if their background activity is completely turned off.In this case, leave them the No Limits mode, but turn off auto-run.
3. Hidden MIUI settings for advanced users
MIUI has a few hidden features that don’t appear in the standard interface, but have a significant impact on power consumption, and can be accessed via Settings → About Phone → MIUI (tap 7 times to activate developer mode), or via ADB commands.
The most useful hidden options:
- 🔍 Deep battery optimization – enabled via command: adb shell dumpsys deviceidle force-idle After executing this command, the phone aggressively restricts background processes but may skip notifications.
- ⚙️ Shutdown AOD (Always on Display – even when it’s off AMOLED-The screen consumes energy. Turn off this function in Settings → Screen. → Always On Display.
- 📶 Limitation of scanning Wi-Fi/Bluetooth In the background - go to Settings → Connections → Wi-Fi → Additionally. → Scanning is always available and disable this option.
For HyperOS devices, some of these settings may not be available or may be moved to other menus, such as the deep battery optimization in HyperOS called Ultra Battery Saver and included in Settings → Battery → Battery Modes.
What to do if after ADB-The phone was going to be lag?
4. Screen and backlight settings to save charge
The screen is the main battery eater, especially on models with AMOLED-matrixes (for example, Xiaomi 13 Pro or Redmi K60), even small changes in the display settings can extend the autonomy by 15-20%.
Optimal parameters for savings:
| Parameter | Recommended value | Saving charge |
|---|---|---|
| Brightness | Autobrightness (max. 60%) or manual 40-50% | 30% |
| Frequency of update | 60 Hz (instead of 90/120/144 Hz) | 25% |
| Dark subject. | Included (for AMOLED) | 10% |
| Screen waiting time | 15 seconds. | 5% |
| Adaptive illumination | Disabled (if not needed) | up to 8% |
In the models with AMOLED-screens (Xiaomi) 12T Pro, POCO F5) Turn on the dark theme and set the wallpaper with a predominance of black. AMOLED They do not consume energy when displaying black, which gives additional hours of operation.
For devices with LCD-Displays (Redmi Note 12, POCO M5) Dark theme will not give such an effect, but reducing the brightness and refresh rate will still save charge.
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If you want a high refresh rate (for example, for games), but want to save battery – use the function Adaptive refresh rate in Settings → Screen. It automatically lowers Hz for simple tasks (reading, instant messengers) and increases in games.
5. Connection management: Wi-Fi, mobile network, Bluetooth
Communications are the second-largest battery drain after the screen, and if you optimize it, you can extend the battery life by another 10 to 15 percent, start by checking the following parameters:
- 📶 Mobile network mode – if you have a weak signal (1–2 dividing, switch from 4G/5G on 3G or 2G. Constant search of the network severely drains the battery.
- 🔄 Autoconnect to Wi-Fi – disable the option to Connect to open networks automatically in Settings → Wi-Fi → Additionally.
- 🔌 Bluetooth and NFC — Turn them off if you're not using them. Even in standby mode, they use energy to scan the devices.
For 5G-enabled devices (Xiaomi 13 Ultra, Redmi K50 Pro) it is recommended to use 4G in most scenarios. 5G consumes 20-40% more power, and the real speed in everyday tasks (social networks, instant messengers) differs slightly.
If you are often in areas with poor coverage (metro, underground parking lots), turn on In-plane mode or manually activate Energy Saving, which will prevent constant network search, which can eat up to 1% of the charge per hour.
⚠️ Note: On some models (Redmi Note 11 Pro)+, POCO X4 Pro) when activating mode Only 2G Notifications from messengers may disappear. If it is critical, use it. 3G instead 2G.
6. Application Optimization: What to Disable First
Not all programs are equally voracious. Some applications can consume up to 5-7% of their charge per hour even in the background, and we analyzed the battery consumption statistics on different Xiaomi models and compiled a list of the most voracious programs that should be optimized first.
Top.-5 Applications that need to be restricted:
- Facebook and Instagram are constantly syncing data in the background. Turn off autoplay and background activity.
- TikTok – even when rolled up, it can consume up to 3% of the charge per hour due to video preloading.
- Google Play Services is a system application, but often overloads the processor. Limit its activity through Settings → Apps → All Apps → Google Play Services → Battery → Limit background activity.
- Mi Video and Gallery -- scan media files in the background. Turn off auto-update albums.
- AnyDesk/TeamViewer – Remote access programs consume a lot of power even in standby mode.
To check the exact charge consumption of applications, use the built-in Battery → Usage Statistics tool. If an application consumes more than 5% per hour with minimal use, it should be optimized or removed.
HyperOS models have a new feature called App Battery Optimizer, which automatically analyzes application behavior and offers optimal settings. To turn it on, go to Settings → Battery → App Battery Optimizer and activate the switch.
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The most voracious apps aren’t always games or videos, often system services (like Google Play Services) or messaging apps (like Viber) are to blame. Always check your spending statistics before optimizing!
7. ultra-low consumption modes: when you need to save charge urgently
If the battery is critically low (less than 15%) and there is nowhere to recharge, use emergency power saving modes. MIUI has several of them, and they vary in the level of constraints:
- 🔋 Energy saving – limits processor performance, reduces screen brightness and turns off background activity in most applications%.
- ⚡ Over-energy saving – leaves only basic functions (calls, SMS, Can extend the phone by 8-12 hours at 10% charge.
- 🛡️ Emergency mode (not available on all models) - turns off everything except the bells and alarm clock.
To activate super energy saving:
- Go to Settings. → Battery.
- Click on the gear icon (⚙️) top-right.
- Choose over-energy saving.
- Add to the list of allowed applications only those that are critical (for example, messengers or cards).
Some models (Xiaomi 12S Ultra, Redmi K40 Gaming) have an option called Power Saving Game Mode, which optimizes game consumption by reducing CPU and graphics load without significant FPS loss.
⚠️ Warning: In ultra-energy-saving mode, notifications from most applications, including instant messengers, are turned off. If you are waiting for an important message, add the app to the exclusion list or use the usual energy-saving mode.
8.Other tips: from firmware to physical battery care
In addition to software settings, other factors affect battery autonomy: firmware version, battery health, ambient temperature. Here are some tips to help maximize battery life:
- 📲 Update the firmware - in new versions MIUI HyperOS and HyperOS often improve power optimization. Check for updates in Settings → The phone. → Updating the system.
- 🔥 Avoid overheating – do not leave your phone in direct sunlight or near heat sources.The optimal temperature for lithium-ion batteries is 10-35°C.
- 🔌 Charge correctly - don't keep your phone charging more than 80% for a long time.Use Xiaomi's original Quick Charge-enabled chargers.
- 🔄 Battery calibration – if the phone suddenly turns off at 20-30%, complete the full discharge/charging cycle (0 to 100%) 2-3 times in a row.
If your smartphone is older than 2 years, check the battery status through the engineering menu:
- In the phone app, dial the code ##4636##.
- Select Battery Information.
- Check Battery Health, if it's below 80%, it's time to replace the battery.
For non-removable battery devices (Xiaomi 11T Pro, Redmi Note 10 Pro), the replacement is better entrusted to the service center. Self-repair can lead to damage to the plumes or failure of the warranty.
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If you often discharge your phone to 0%, it reduces battery life. The optimal charge range for lithium-ion batteries is 20-80%. Use charge notifications in Settings → Battery → Charge Notifications to monitor the process.