How to extend the battery Xiaomi: from calibration to hidden settings MIUI

Xiaomi smartphones are famous for their value for money, but even the most advanced models of Redmi, POCO Or Mis have a problem with fast battery discharge, and it's not just because of the battery capacity, but because of the firmware. MIUI, This article will not just list the standard tips like “reduce the brightness of the screen”, but will reveal the hidden mechanisms of power consumption in Xiaomi, which the manufacturer rarely advertises.

We analyzed the data from the forums. 4PDA Xiaomi Community, DXOMark Lab Tests (Battery Section) and internal documentation MIUI, highlight 15 The most efficient methods are from basic to advanced. 7/8 The series and MediaTek Dimensity, where the problems with autonomy are most pronounced. 13 Ultra sits down for 6 hours, and the Redmi Note 12 Pro+ It doesn’t live to the evening – here you will find system solutions, not superficial recommendations.

1. Battery calibration: why Xiaomi shows wrong percentage of charge

Many Xiaomi users are faced with a situation where the smartphone suddenly turns off when the smartphone is not used. 15-20% charge or, conversely, charge up to 100% post 10 This is due to a failure in the battery controller, which is responsible for monitoring the actual capacity of the battery. 3 months, but this is often overlooked in the instructions.

For calibration, follow the following steps:

• 🔋 Discharge the phone before automatically turning off (don’t manually turn off!).
• 🔌 Connect the original RAM and charge for at least 8 hours without interruptions (even if the indicator shows 100%).
• 📱 Turn off the power, turn on the smartphone and wait for the full load MIUI.
• 🔄 Repeat the discharge/charging cycle again (critical for battery models) >5,000 mAh).

After calibration, check the actual battery capacity through the engineering menu:

##4636## → Battery → Charge level

If the health value is below 80%, the battery needs to be replaced.

⚠️ Attention: Calibration won't restore a physically worn-out battery, but will eliminate charge display errors. POCO F5 Xiaomi 12T After calibration, you may need to reset settings → Memory. → Resetting settings (without deleting data).

2. Hidden settings MIUI, battery-eating

Firmware MIUI It is known for its abundance of background processes, many of which work even when the screen is off, for example, the Mi Share feature consumes up to 5% of charge per hour, if not explicitly disabled. Xiaomi Cloud syncs data every 15 minutes, whether you want it or not.

Open the Settings. → Special facilities → Battery and performance and perform:

• 🛑 Turn off Auto Optimization – it often resets your energy saving settings.
• 🔄 Set Performance Mode to Balanced (not Energy Saving, as it limits the power supply). CPU too aggressively).
• 📴 Deactivate “Update Check in the background” (located in Settings) → The phone. → Updating the system).

For models with Snapdragon 8 Gen 2 (such as Xiaomi 13 Pro), additionally disable the Game Turbo in the game settings – this feature overclocks the processor even in simple games, which leads to overheating and accelerated discharge.

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If after turning off background services, the smartphone became slower to open applications, turn on Settings → Annexes → Memory management → Auto-Run only for messengers and social networks.

3. App optimization: which programs are draining Xiaomi the most

Analysis of data from AccuBattery (battery monitoring app) shows that the top-5 "The power thieves on Xiaomi are:

1. TikTok – up to 12% charge per hour due to constant video uploads 4K.
2. Facebook — 8-10% due to background activity and autoplay of rollers.
3. Google Play Services — 5-7% (Synchronization, geolocation, push notifications).
4. MIUI Launcher — 4-6% (animations, widgets, search by device).
5. Telegram — 3-5% (background downloading of media and chat).

To limit their appetites:

• 🚫 For TikTok and Facebook, turn off Autoplay in the app settings.
• ⚙️ For Google Play Services, ban background activity: Settings → Annexes → Google Play Services → Battery → Background activity → Limit.
• 🔍 For MIUI Launcher reduce the number of widgets on the home screen and turn off animation effects in Settings → Screen.

In the models with MIUI 14+ And we've got a Deep Energy Saving feature for individual applications:

Settings → Battery → Applications → [select program] → Deep energy saving

⚠️ Warning: Do not apply Deep Energy Saving to messengers (WhatsApp, Viber) – they will stop receiving notifications.

Disable auto-reproduction in TikTok/Facebook|Limit background activity of Google Play Services|Remove unnecessary widgets from the main screen|Enable "Deep Energy Saving" for rarely used applications|Update all programs to the latest version-->

4. Energy saving modes: which to choose and when

MIUI It offers three basic energy saving modes, but their effectiveness depends heavily on the smartphone model. POCO X5 Pro mode Overpower saving turns off 5G restrictive CPU up to 1.8 GHz, which gives +40% autonomy, but makes the phone almost unusable for gaming. On the Xiaomi 13 Lite, the same mode only reduces the brightness of the screen and turns off the screen. AOD (always-on display).

We will discuss each mode in detail:

To activate the hidden mode "Adaptive battery" (available on the MIUI 13+ for flagships, please:

Settings → Battery → Three dots (menu) → Adaptive battery

This mode analyzes your habits and automatically limits the background activity of underused applications.

On models with Snapdragon 8+ Gen 1 (for example, Xiaomi 12S Ultra) additionally enable "Battery cooling" in Settings → Battery: This feature prevents the battery from overheating when charging, which prolongs its life by 20-30%.

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Overpower Saving turns off mobile internet for all apps except phone calls. To get instant messengers back, add them to the battery settings exceptions.

5. Charging according to the rules: how not to kill the Xiaomi battery in a year

The life of lithium-polymer batteries in Xiaomi is 400-600 If you're not using it properly, that number can be reduced to 200 cycles, which means that the battery needs to be replaced 1.5 Main user errors of the year:

• 🔌 Use of non-original chargers (especially with power output) >30W For models that do not support fast charging).
• 🌡️ Charging at below 0 temperature°C or higher than 40°C (Critical for Redmi Note with 5000 battery)+ mic).
• 📵 Long-term storage of a smartphone with a charge of 0% or 100%.
• 🔄 Frequent charging before 100% (range — 20-80%).

Follow these rules for maximum service life:

1. Use only original cables and adapters (for Xiaomi 13 Pro with a new version) 120W Only a complete charger will fit the charger. MDY-12-ED).
2. Don’t play heavy games while charging – this heats up the battery to 45°C, which reduces its resource.
3. If you leave your phone on charge overnight, activate Settings → Battery → Fast charging. → Disable after 80% (available on the MIUI 14+).
4. Once a month, perform a full cycle of discharge / charging (0-100%) controller-calibration.

To check the status of the battery, use the code:

##6484## → Battery info

Meaning MB_06 (Or similar) will show the actual capacity in mAh. 80% From the factory, it is time to change the battery.

The dark subject and AOD: myths and the reality of economy

Many people think that dark theme and always-on display (AOD) They save a lot of charge. In practice, it depends on the type of screen:

• 📱 AMOLED-screens (all flagships Xiaomi and POCO F/Pro-series: The dark theme gives +10-15% Autonomy, because black pixels are not illuminated.
• 📱 IPS-screens (Redmi Note) 10/11, POCO M4/M5): savings are minimal (1-3%), Because the lighting is always working.

To minimize consumption AOD:

• 🕒 Set a timer to turn off: Settings → Screen. → Always-On Display → Schedule (for example, only from 8:00 to 22:00).
• 🎨 Choose a minimalist display style (only time without animations).
• 🔄 Turn off the “Wake Up” feature – this feature consumes up to 5% of the charge per day due to constant scanning of the motion sensor.

In the models with AMOLED and MIUI 14 the function "Adaptive" is available AOD", It automatically reduces the brightness of the screen in the dark:

Settings → Screen → Always-On Display → Adaptive Brightness

⚠️ Attention: On Xiaomi 12T 13 Lite with AMOLED 120 Hz AOD It can consume up to 1% charge per hour at maximum brightness. If the autonomy is critical, turn it off completely.

7.Geolocation and mobile Internet: how to reduce consumption without loss of functionality

Geolocation services and mobile Internet are the main after-screen battery eaters, such as Google Maps in navigation mode drains the Redmi Note 12 Pro+ 1% in 2 minutes, and background location (for weather, advertising) up to 3% per hour:

For geolocation:

• 📍 Turn off "Exact Location" for unnecessary applications: Settings → Confidentiality → Permits → geodata.
• 🗺️ In Google Maps, activate Settings → Navigation → Saving traffic (reduces the frequency of updates) GPS).
• 🚗 To navigate in the car, connect your phone to a lighter - this will prevent discharge during the trip.

For mobile Internet:

• 📶 Switch from 5G on 4G (LTE), If the maximum speed is not critical: → SIM-maps and mobile networks → Preferred type of network → 4G.
• 🔄 Turn off Network Search (constantly scans available networks): Settings → Mobile network → Network search engine.
• 📴 Use "Airplane Mode" in subways or places with poor signal - constant attempts to connect eat up to 7% of the charge per hour.

On dual-SIM models, disable the second SIM if not in use: → SIM-map → Turn it off. SIM 2.Even in standby mode, the second SIM card consumes up to 2% of the charge per day.

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If you need internet but don’t need calls (such as roaming), turn off voice via Settings. → Mobile network → Turn off VoLTE. That'll reduce battery consumption. 10-15%.

8 Advanced methods: shutting down the cores CPU and substitution DPI

For power users willing to sacrifice some performance for autonomy, there are a few hidden methods: they require unlocking the bootloader and root rights, but they give a significant increase in uptime.

1. Disconnecting the excess processor cores

On Snapdragon. 888/8 Gen 1 (for example, Xiaomi 11T Pro) may be deactivated 2-3 nucleus 8, Because they're rarely involved in everyday tasks:

Install Kernel Adiutor (Magisk required)


Go to CPU → Hotplug




Turn off cores 5-7 (leave 0-4 for basic tasks)

2. Substitution of value DPI

Reducing the pixel density (DPI) reduce the load GPU. Optimal value for Xiaomi — 400-440 (standard — 480). You can change it through ADB:

adb shell wm density 400


adb shell wm size reset

3. Replacement of the I/O scheduler

By default, MIUI It uses cfq, which is not optimized for energy saving. Replace it with bfq or kyber:

echo "bfq" > /sys/block/sda/queue/scheduler

⚠️ Attention: These methods can lead to unstable system operation or overheating.Before experiments, back up through TWRP On models with MediaTek (for example, Redmi Note 12) disabling cores CPU Could cause problems with the modem.

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Nuclear shutdown CPU giveaway +20-30% It's autonomous, but it reduces performance in games and benchmarks, and it's optimal for office tasks and content browsing.

FAQ: Frequent questions about Xiaomi battery