How to increase the battery charge font on Xiaomi Redmi: from standard settings to ADB

Why users want to change the size of the battery charge font

The charge indicator on the Xiaomi Redmi lock screen is one of the most popular interface details. For some users, the standard digit size seems too small, especially on the large screens of the Redmi Note 10/11/12 series or POCO X3/X4. Others are hampered by font blur in bright sunlight, and others just want to personalize the appearance of the smartphone.

The manufacturer does not provide a direct function to resize this element in the basic MIUI settings, but there are several workarounds - from hidden menus to modification of system files. It is important to understand that not all methods are equally safe: some require unlocking the bootloader, others work only on certain versions of the firmware. In this article, we will discuss all the current ways to increase the battery font for Xiaomi Redmi, including those that are not mentioned in the official documentation.

Before you make any changes, consider that modifying system parameters can cause interface failures, and you do everything at your own risk.

Method 1: Using MIUI design themes

The easiest and safest method is to choose a design theme that has a larger charge indicator font, which does not require root rights or technical skills, but has a limitation: the choice of themes depends on the version of MIUI and the model of the smartphone.

How it works:

• 🎨 Open the “Themes” app** (Settings) → Topics).

The downside of the method: not all themes correctly display the enlarged font on all Redmi models. For example, on the Redmi Note 10 Pro with MIUI 13, part of the themes can ignore changes to the lock screen.

Method 2: Configure through the Functions Lab (hidden menu)

MIUI firmware has a hidden feature lab menu where you can activate experimental options, including rescaling interface elements.This method works on most Xiaomi Redmi devices with MIUI 12-14, but the path to the menu may differ.

Instructions:

1. Open the Settings. → The phone.
2. Tap 5-7 times on the line MIUI version until the notification appears You became a developer!
3. Return to the main settings menu and select Additional → Functions Lab (on some models, path: Settings → Developer → Functions Lab).
4. Find the option of Lock Screen Font Size or Charge Display Setting (the name may vary).
5. Move the slider to the right to enlarge the font. Save the changes and restart the smartphone.

Make a backup copy of the data

Check the version of MIUI (Settings → About the phone)

Activate the Developer Mode

Charge your phone at least 50%

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⚠️ Note: On some devices (e.g. Redmi) 9A or POCO M3) The option of scaling the font in the Functions Lab may be missing or not work correctly, increasing only the numbers, not the percentages.

Method 3: Editing system files (root required)

For advanced users who are ready to get root rights, there is a way to directly edit the system files that display the charge, which gives maximum freedom of configuration, but with risks:

• 🚨 Loss of warranty (if the device is under warranty).
• 🔧 The ability to “brick” the smartphone in case of error.
• 🔒 Need to unlock the bootloader and install custom recovery (for example, TWRP).

Instructions for root devices:

1. Install a file manager with root support (such as Root Explorer or Solid Explorer).
2. Go to /system/priv-app/SystemUI/SystemUI.apk.
3. Copy the SystemUI.apk file to your computer and open it with APK Editor or MT Manager.
4. Find the file. res/values/dimens.xml and change the parameters: <dimen name="battery_text_size">24sp</dimen> Increase the value (e.g., to 32sp or 36sp).
5. Save the changes, reassemble the APK and replace the original file in /system.
6. Reset the device.

⚠️ Attention: Incorrect editing SystemUI.apk It can lead to bootloop (on loop).It is recommended to pre-create a full backup through TWRP Or OrangeFox Recovery.

Method 4: ADB-commands to scale up (without root)

If you don’t want root rights, but are willing to use ADB (Android Debug Bridge), you can try rescaling the font through commands. This method works on MIUI 12-14 and does not require unlocking the bootloader, but the changes will reset after the firmware update.

Step-by-step:

1. Activate USB Debugging in Settings → About Phone → MIUI Version (tap 7 times) → Developer Settings → Debugging via USB.
2. Connect your smartphone to your PC and confirm the debugging permission.
3. Open the command line (Windows) or the terminal (macOS/Linux) Enter: adb shell settings put system lockscreen_battery_font_scale 1.5 Meaning 1.5 can be changed 1.8 or 2.0 higher.
4. Reset the device.

⚠️ Note: On some devices (e.g. Redmi) 10C) The team may not work because of the manufacturer's limitations. In this case, try an alternative command:

adb shell settings put global battery_text_scale 150

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If, after input, ADB-When you have the font not changed, check if the settings have reset after the reboot. In this case, try re-entering the command or use the Shizuku app to apply the changes without resetting. ADB.

Method 5: Applications from Third Party Developers

Google Play has several apps that allow you to customize the lock screen, including the size of the battery charge font.

• 📱 Lock Screen Customizer supports changing the font, color and position of the indicator. MIUI 13-14, but requires a permit to impose.
• 🎨 Battery Percent Custom - specializes in setting the display of percentages of charge. Allows you to choose a font from 10+ variant.
• 🔧 Hex Installer (for root users) – deep customization of system modules, including SystemUI.

How to use Lock Screen Customizer:

1. Install the app from Google Play.
2. Grant permission to Draw over other applications (Settings → Apps → Special Access).
3. From the app menu, select Battery Text → Size and set the desired value.
4. Activate the module and restart the device.

Cons of third-party applications:

• 🔋 Increased battery consumption (due to background work).
• 🛑 Possible conflicts with updates MIUI.
• 💰 In free versions, advertising is often found.

Comparison of methods: which one to choose?

The choice of method depends on your Xiaomi Redmi model, MIUI version and readiness for technical manipulation.

For most users, the best solution is a combination of themes and ADB-If you're ready to experiment, try Function Lab, and leave the Root methods to the last resort if the other methods don't work.

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On devices with MIUI 14 and the new Redmi Note 12 some methods, for example, ADB-commands) may be blocked by the manufacturer, in which case the themes or third-party applications remain.

Frequent problems and their solutions

When changing the font of battery charge, users often face the following problems:

⚠️ Note: If, after the use of the ADB-When you have the font blurred or cropped, it means that the scale value you select is too large for your screen resolution. Reduce the value by 20 to 30 percent and restart the device.

Problem 1: The font has changed, but the numbers are superimposed on the battery icon.

Solution: In the Functions Lab or through ADB, zoom down to 1.3-1.4. If you use a theme, try another one (e.g. Big Battery Digital).

Problem 2: After the MIUI update, the settings reset.

Solution: Repeat the action (for the purpose of ADB-If you have used the editing of the commands or themes SystemUI.apk, You will need to repeat the procedure after each major update.

Problem 3: The Redmi 9T or POCO M4 Pro does not run the Functions Lab.

Solution: Check the version MIUI. On some budget models, this option is disabled — ADB-commands or third-party applications.

FAQ: Answers to popular questions