How to extend the life of the battery on Xiaomi: MIUI secrets and hardware life hacks

Xiaomi smartphones are famous for their price-quality ratio, but even flagship models like the Xiaomi 14 Ultra or the budget Redmi Note 13 face one problem: the battery goes down faster than you would like. The reason is not always the battery capacity – often the fault of background processes, unoptimized MIUI settings or hardware features that users do not even know.

In this article, we’ll look at 15 proven ways to keep your battery power on any Xiaomi smartphone, from basic settings to hidden firmware features. You’ll learn how to turn off MIUI’s energy-intensive services, which run even in standby mode, which apps devour battery power in the background, and how to properly charge your battery so it lasts longer. All methods have been tested on 2020-2026 models and do not require root rights.

1.Diagnostics: What applications and processes drain the battery

Before you optimize, you need to understand what's eating the charge. MIUI has a built-in monitoring tool, but it hides some of the data. Here's how to get the whole picture:

Go to Settings → Battery and Performance → Battery Use. Here you will see a flow chart for the last 24 hours or 7 days.

• 🔋 Screen – If it takes up more than 30% of the flow rate, the brightness or latency is too high.
• 📱 Android system – if it’s over 15%, unnecessary processes are running in the background.
• 📊 Applications — social networks (Facebook, TikTok), instant messengers (Telegram, WhatsApp) and games are often to blame for the quick discharge.

For a detailed analysis, use third-party utilities like AccuBattery (available on Google Play) that will show real battery capacity, standby discharge rate, and even estimate battery health as a percentage, for example, if the capacity has dropped below 80%, it's time to change the battery.

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In AccuBattery, turn off the option “Monitoring Charging” – it consumes up to 5% of the charge per day.

2. MIUI optimization: hidden energy saving settings

MIUI has a lot of built-in features to save power, but most of them are disabled by default or hidden in the back of the menu.

A. Enable "Super Energy Saving"

This mode aggressively restricts background activity and reduces performance, but can extend the operating time by 30-50%.

1. Open Settings → Battery and Performance → Battery Modes
2. Choose Super Energy Saving.
3. Click Set up and add critical apps (e.g. Telegram for notifications) to the exceptions.

B. Disable Auto-Run Unnecessary Applications

Many programs (Mi Video, Mi Browser, GetApps) are launched at the start of the system and hang in the background.

1. Go to Settings → Applications → Application Management → Autorun.
2. Turn off auto-run for all applications except instant messengers and system services.

C. Set up "Background Lock"

This feature forcibly closes applications after they leave. Enables in Settings → Battery and Performance → Background Lock. We recommend that you leave only messengers and navigators in the exceptions.

Enable "Super energy saving" | Turn off auto-run of unnecessary applications |Configure "Background Lock" | Check battery usage once a week-->

3.Screen: The main charge eater

The display consumes up to 40-60% of the charge in active use, and if you optimize its settings, you can extend the life by 1-2 hours.

A. Reduce brightness and adaptive lighting

• 🌞 Set the manual brightness at 40-50% (in Settings → Display → Brightness).
• 🌓 Turn off Adaptive Brightness – it often overstates the backlight.
• 🌃 Turn on Dark Theme (in Settings → Display → Dark Theme). On AMOLED- screens (e.g., Xiaomi 13T), this saves up to 15% charge.

B. Reduce screen waiting time

By default, the screen goes out after 30 seconds of inactivity. Reduce this time to 15 seconds in Settings → Display → Sleep after.

C. Turn off the high refresh rate

Screens with 90Hz, 120Hz or 144Hz (as in POCO F5) look smoother, but consume 20-30% more power. Switch to 60Hz to Settings → Display → Screen refresh rate.

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4. Connections: Wi-Fi, mobile network and Bluetooth

Wireless communication modules are another hidden source of consumption, and even in standby mode, they can eat up to 10 percent of the charge overnight.

A. Set up Wi-Fi and mobile data

• 📶 Turn off Wi-Fi network search in sleep mode (Settings → Wi-Fi → Additional → Sleep mode network search → Never).
• 📡 Switch to 3G instead of 4G/5G unless you need fast internet (Settings → SIM-maps and mobile networks → Preferred network type).
• 🔄 Enable Automatic Switching between SIM- cards only if you use two SIMs (Settings → SIM- cards and mobile networks → Dual SIM and an access point).

B. Optimize Bluetooth and GPS

Turn off Bluetooth and Geolocation (GPS) when they're not needed. Even in the background, they consume up to 5% charge per hour.

• 📍 Use geolocation energy saving mode (Settings → Privacy → Permits → Geolocation → Energy saving mode).
• 🎧 Turn off Bluetooth after using headphones or smartwatches.

5. Background activity: how to stop the "energy vampires"

Many apps continue to work in the background even when you're not using them, update data, display notifications and eat up charge. Here's how to deal with them:

Limit background activity for unnecessary applications

MIUI has a built-in tool for this:

1. Open Settings → Applications → Application Management.
2. Select an app (like Facebook or AliExpress).
3. Click Battery Use and select Limit Background Activity.

B. Turn off automatic synchronization

Google, Mi Account and others are constantly syncing data (contacts, email, photos) to reduce the cost of:

• 🔄 Go to Settings. → Accounts and synchronization.
• 🚫 Turn off automatic sync for unnecessary accounts.
• ⏳ Set up manual synchronization (e.g., once a day).

C. Use “Deep Optimization”

MIUI 14+ has a Deep Optimization feature that analyzes and closes the background processes. Included in Settings → Battery and Performance → Deep Optimization.

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Limiting background activity for the 5-10 most voracious applications can extend the run time by 15-25%.

6. Charging: How to properly charge Xiaomi so that the battery lasts longer

Not only the discharge, but the charging process affects the longevity of the battery, and by following these rules, you will keep the battery capacity at 90% even after 2-3 years:

A. Avoid full discharge and recharge

• 🔋 Keep the charge level in the range of 20-80%. Full discharge (0%) and charging up to 100% reduce battery life.
• ⚡ Use Optimized Charging Mode (Settings → Battery & Performance → Battery Settings → Optimized Charging) It automatically stops charging by 80%.

B. Choose the right charger

Use original or certified Quick Charge charging (generally 33W, 67W or 120W for Xiaomi), and cheap Chinese charging can damage the battery and even cause a fire.

Do not charge your phone in extreme conditions

• 🌡️ Avoid charging at temperatures below 0°C or higher than 40°C.
• ☀️ Do not leave your phone in the sun or near heat sources (e.g., on a torpedo in a car).
• 🛏️ Do not charge your phone all night, which causes the battery to overheat and degrade.

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If you need to charge your phone quickly before you go out, use Fast Charging (up to 50 to 60%) and then turn off the power. This is less damaging to the battery than charging to 100%.

7 Hardware life hacks: what to do if software methods do not help

If you've tried all the settings, but the battery still goes down too fast, the problem may be the hardware.

A. Check the battery's health

The battery capacity decreases over time, to see what it's doing.

1. Enter the code ##4636## in the phone application.
2. Go to the Battery Information menu.
3. If you look at the health parameter, if it's below 80 percent, you should change the battery.

B. Chill the phone.

Overheating is the main enemy of lithium-ion batteries.

• 🧊 Remove the case (especially if it is thick or silicone).
• 🌬️ Do not use your phone while charging.
• 🚫 Close all background apps (especially games and navigators).

B. Calibrate the battery

If the phone suddenly turns off at 20 to 30 percent charge, the battery controller may have been calibrated to reset it.

1. Reduce the phone to 0% (until it turns off).
2. Charge to 100% without interruption.
3. Repeat the cycle 2-3 times.

8 Extreme measures: what to do if nothing helps

If all of these methods fail, there are radical ways that require more effort, but can bring the phone back to its previous range.

A. Reset to factory settings

Sometimes MIUI settings get broken and background processes get out of hand. A complete reset can solve the problem:

1. Make a backup of the data (Settings → About Phone → Backup and Reset).
2. Reset to Settings → About Phone → Reset settings.
3. After restarting, set your phone as new (don’t restore settings from backup!).

B. Installation of custom firmware

Some custom firmware (like LineageOS or Pixel Experience) are optimized better than standard MIUI. However, this method requires unlocking the bootloader and may be unwarranted.

B. Battery replacement

If the phone is older than 2-3 years, most likely, the battery is worn out. the original batteries for Xiaomi cost from 1,500 to 3,000 rubles (depending on the model), the replacement is better entrusted to the service center - if you install yourself, the risk of damage to the plumes or power controller.

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If the battery is replaced, check if the battery is fake, and Xiaomi's original batteries have a hologram and a serial number that can be checked on the manufacturer's website.

FAQ: Answers to Frequent Questions

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