How to save battery power on Xiaomi: proven methods for MIUI

Xiaomi smartphones (including the Redmi line and POCO) They're famous for their powerful iron, but even the most advanced models with 5,000 mAh batteries are discharged faster than you'd like, and not only because of the battery capacity, but also because of the optimization. MIUI, This article is not about obvious tips like "reduce brightness" - it's a collection of deep settings that give a real increase in battery life.

We tested the methods on Xiaomi models 13 Pro, Redmi Note 12 Pro+ and POCO F5 latest-edition MIUI 14/15 (Android 13/14). Some tricks require superuser rights (root), but most work without them.Important: on new Xiaomi smartphones with Snapdragon chips 8 Gen 2+ Dimensity 9200+ Saving charge by shutting down the processor cores can lead to overheating due to uneven load – check the temperature in Settings → Battery → Battery status.

1. MIUI Optimization: Hidden Energy Saving Settings

The manufacturer hides some of the battery-saving features in deep menus, such as the Ultra Battery Saver mode in the Ultra Battery Saver. MIUI limits not only background processes, but also the clock frequency of the processor to 1.8 GHz, what gives +20-30% It's autonomous. It's activated:

• 🔋 Go to Settings. → Battery → Battery modes
• 📱 Select an Extreme Battery (some models call it Extreme Mode)
• ⚙️ Turn on the option Automatically at 5% charge (default disabled!)

Another secret is to disable smart optimization MIUI, which often works against the user. Go to the settings → About the phone, tap 7 times on the version MIUI, to open Advanced Settings. Turn it off there:

• 🤖 Auto-optimization of performance (interfering with manual settings)
• 🔄 Adaptive brightness on schedule (uses) GPS adjustable)
• 📡 Optimizing the network in the background (boosts ping, but eats the battery)

⚠️ Attention: On devices with MIUI Global may have lags in games after disabling Auto-Performance Optimization. In this case, add games to exceptions through Settings → Annexes → Battery management → Choice of applications.

2.Background Process Control: What Really Kills the Battery

The main charge eaters on Xiaomi are not so much games as system services and applications with constant activity. XDA Developers, up to 40% of the energy in standby mode is accounted for:

• 📍 Geolocation Services (Google Services, Mi Location)
• 📶 Networking (Wi-Fi/Bluetooth scan)
• 🔔 Push notifications (especially messengers)
• 🔄 Auto Sync (Google Account, Mi Cloud)

To limit them:

1. Open the Settings. → Annexes → Battery management
2. Select Background Limitation for Unnecessary Apps (e.g. Mi Video, Mi Browser)
3. B Settings → Memory. → Autorun disable autorun for all applications except instant messengers
4. B Settings → Google → Google settings → Account Management Disable Data Sync for Unnecessary Services

Disable auto-run of unnecessary applications |

Limit background activity through "Battery management"|

Disable Google Sync for Unused Services|

Ban the scanning. Wi-Fi/Bluetooth background-->

For advanced users: use them. ADB, To completely disable unnecessary system services, such as a command to disable Mi Location Service:

adb shell pm uninstall -k --user 0 com.miui.daemon

⚠️ Note: Disabling system services through ADB may disrupt MIUI. Before experimenting, back up through Settings → Additionally. → Backup.

3. Screen settings: beyond brightness

The screen is the main consumer of energy, but just reducing the brightness is not enough. AMOLED-displays (all flagships Xiaomi and POCO from 2020 onwards) key parameters:

• 🎨 Color temperature: cold tones (6500K+) They consume 12% more energy than warmer ones (4000K)
• 🔄 Upgrade frequency: 120 Hz vs 60 Hz gives a 25% difference in autonomy
• ⏱️ Screen timeout: optimally 15-30 Less is uncomfortable, more is wasteful)

How to set up:

1. Go to Settings → Display
2. Set the refresh rate to 60 Hz (or Adaptive if it actually works)
3. In the Color Scheme, select Warm Tones or Reading
4. Activate Dark Mode and Always Use Dark for All Apps

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On Xiaomi AMOLED-screens (e.g. Xiaomi 13 Ultra) enable the Always on screen function in black and white mode – it spends everything ~1% charge per hour thanks to technology LTPO.

4. Communication optimization: Wi-Fi, 5G and GPS

Communications are the second largest consumer of power after the screen, especially when it comes to the screen. 5G double SIM (Tests show that:

• 📶 5G In standby mode consumes 40% more than 4G
• 🔄 Constant switching between 4G/5G eat up 5-7% charge
• 📡 Wi-Fi 6E (Xiaomi 13/14) more cost-effectively 5, But only with a stable signal.

Recommendations:

1. Turn it off. 5G In Settings → SIM-maps and mobile networks → Preferred type of network if not used
2. B Settings → Wi-Fi → Turn it off: 🔍 Scanning is always available (uses) GPS network-search) 🔄 Auto-connection to open networks

duality-SIM

3-5%

5. Hardware tricks: firmware, cores and cooling

At the level of "iron" charge savings can be achieved through:

• 🔧 Castomic nuclei (e.g. FrancoKernel for Snapdragon)
• ⚡ Undervolting (reducing the voltage on the processor)
• 🧊 Clock speed limit (e.g., to 2.4 GHz instead of 3.2 GHz)

This will require:

1. Unlock the bootloader through Mi Unlock Tool (official Xiaomi utility)
2. Install custom recovery (TWRP Or OrangeFox)
3. Sweep the kernel with support EAS (Energy Aware Scheduling)

Example of configuration for POCO F5 (Snapdragon 7+ Gen 2):

• 📉 Limiting the maximum frequency of large cores to 2.5 GHz (instead of 2.9 Hz)
• 🔋 Disabling two small cores in standby mode (saves up to 8%)
• 🌡️ Activation of passive cooling at temperatures below 40°C

⚠️ Note: On devices with MediaTek Dimensity processors (e.g. Redmi Note 12 Pro)+) undervolting can lead to spontaneous reboots due to an unstable power controller.Before experimenting, check the compatibility of the core with your model on the forum XDA.

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On the new Xiaomi smartphones with Snapdragon 8 Gen 2 chips+ (For example, Xiaomi 14 Ultra) limiting the cores of the processor can lead to overheating due to uneven load.

6. Battery killer apps: how to find and neutralize them

Even if you turn off all unnecessary services, some apps continue to drain the battery.

• 🎮 Games (especially with background activity: Genshin Impact, PUBG Mobile)
• 📸 Social networks (TikTok, Instagram - used) GPS and a microphone in the background)
• 📊 Fitness trackers (Mi Fitness, Google Fit) – constant monitoring of sensors)

How to stop them:

1. B Settings → Battery → Battery usage check out the top consumers in the last 24 hours
2. For each "glutty" application: 🚫 Disable Auto-Run in Settings → Annexes → Battery management 📵 Turn off background data in the application settings 🔕 Prohibit access to GeoDan and Microphone

Greenify

root

For Facebook and Instagram, it is better to use the lightweight versions (Facebook Lite, Instagram Lite) or the web version through a browser with JavaScript disabled (Kiwi Browser has this option).

7. Charging by science: how to extend the life of the battery

Not just discharge, but improper charging reduces autonomy. - Xiaomi batteries (usually 4500-5000 mAh lose to 20% annual capacity in case of violation of the rules:

• ⚡ Fast charging (>30W) Continuously reduces cycles by 15%
• 🔥 Overheating during charging (>40°C) accelerates degradation
• 🔋 100% or 0% storage damages battery chemistry

The best strategy:

• 📈 Keep the charge in range. 20-80% (Use AccuBattery for alerts)
• ⚡ Turn off fast charging in Settings → Battery → Charging settings, if you do not hurry
• 🌡️ Charge at temperature 10-30°C (use Cool Master for monitoring)
• 🔌 Avoid wireless charging – it’s 30% less efficient and heats your phone

On new models (Xiaomi) 13/14, Redmi Note 12 Turbo) has a hidden function called “Adaptive Charging” which automatically limits the charge to 80% To turn it on at night:

1. Activate the developer mode (7 taps according to the version) MIUI)
2. Go to Settings → Additional → For Developers
3. Find the charging limit and set 80%

8 Extreme measures: when nothing helps

If after all the optimizations, the battery still sits down in half a day, the reasons may be hardware:

• 🔋 Battery degradation (capacity) <50% starting-point)
• 📱 Problems with the power controller (most often on MediaTek)
• 🔌 Faulty connector USB-C (bad-face → high-current)

How to diagnose:

1. Check the battery status in Settings → Battery → Battery status or through AccuBattery
2. If the capacity <80%, Replacement of the battery (cost for Xiaomi — 1500-3000₽)
3. To check the power controller, use the test: adb shell dumpsys battery Look for health settings (should be 2 — "good) and voltage (normal) 3.7-4.2V)

If the problem is the connector:

• 🔍 Check for oxidation (wiggle the cable when charging - if the current jumps, the connector is faulty)
• 🛠️ Clean the contacts with alcohol or replace the connector (price) 800-1500₽)

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On Xiaomi with wireless charging support (e.g. Xiaomi 13 Pro) check the settings Reverse Charging in Settings → Battery: This feature can accidentally activate and discharge the phone even if nothing is connected.

FAQ: Frequent questions about battery saving on Xiaomi