The visual battery indicator is one of the most important interface elements of any modern smartphone. Owners of Xiaomi, Redmi and POCO devices often face the need to accurately monitor energy levels to avoid being in a situation where the phone unexpectedly turns off. The standard battery icon, while informative, does not always give an accurate idea of how long the device will be able to work offline.
MIUI and the new HyperOS provide users with flexible tools to adjust battery status. You can choose to display digital values inside, next to, or remove this element from the status bar. It is important to understand that using these features correctly helps optimize energy consumption and extend the life of a lithium polymer battery.
In this article, we will discuss in detail all ways to turn on the percentage of charging, from standard settings to hidden engineering menus, also consider situations where the indicator is not working correctly, and methods for calibrating the battery to eliminate software errors. To accurately calibrate the power controller, you need to discharge the device to 0% and charge to 100% when turned off at least once a month.
Standard display settings in MIUI and HyperOS
The easiest and safest way to change the look of the battery indicator is to use the built-in settings menu. The interface of the MIUI shell and HyperOS is almost identical in this aspect, so the instruction will suit most current models. You do not need to install third-party applications or get root rights, since the functionality is laid down by the developers by default.
First, unlock your smartphone screen and go to the main menu. Find the gear icon that represents the Settings section. In the settings list that opens, scroll down to Notifications and the status bar (in some firmware versions, this section may be simply called Notifications or inside the Screen tab).
Inside the menu, find Battery Charge or Battery Display. Clicking on it will give you a few options for locating the digital value. You can choose to display the percentages inside or next to the battery graphic. Changes apply instantly and do not require rebooting the device.
It's worth noting that some global firmware versions may have slightly different paths to settings. If you don't find the right setting in the right place, search for settings. To do this, there's a search bar at the top of the settings menu where you want to type in "battery" or "charge," and the system will suggest you go to the desired section.
Use of widgets for detailed monitoring
Beyond the status bar, the MIUI shell offers more advanced control tools, widgets, that allow you to display not only the current percentage of charge, but also usage statistics, as well as time to full charge, which is especially convenient for those who prefer a minimalist interface without extra numbers at the top of the screen.
To add a widget, you need to go to desktop editing mode. Push two fingers on the screen or hold your finger on an empty area for a long time. In the bottom menu, select Widgets. In the list that opens, find a category related to the battery or system tools. There are various styles available here, from classic digital watches with an indicator to complex graphic elements in the style of Cyberpunk or Neon.
☑️ Setting up the battery widget
Some widgets allow you to control power saving mode directly from your desktop, and by tapping the control, you can activate saving mode or view a list of applications that consume the most power, which allows you to quickly respond to high charge consumption without going deep into system settings.
⚠️ Note: Using animated or constantly updated battery widgets may slightly increase energy consumption in the background, as the system has to poll the power controller more often.
Customization enthusiasts can use third-party widgets from GetThemes or Google Play, which can display battery temperature, voltage and current in real time, but be careful: installing widgets from unverified sources can lead to unstable system operation or leakage of personal data.
Engineering menus and hidden codes for diagnostics
For a deeper analysis of the battery, users often turn to the engineering menu, a hidden part of the system designed for engineers and testers, but also accessible to ordinary users through special devices. USSD-And you can see here not only the percentage of charge, but also the voltage, the temperature of the cells and the health status of the battery.
To get to the engineering menu, open the Phone app (caller) and enter the code ##6485##. If the code is entered correctly, a page with technical information will open. MB_06 — It shows the state of the battery (Good/Bad), and MB_00 — The current percentage of charge. MF_02 (or MF_05 depending on version), which displays the number of full charging cycles.
#6485## - Log in to the battery information menu
#4636## - General test menu of AndroidYou can calibrate it in the same menu, although modern smartphones do it automatically. If you notice that the phone turns off at 15% or the percentage jumps, you can try resetting the statistics. But beware: the wrong actions in the engineering menu can lead to resetting important system settings.
What do the error codes in the engineering menu mean?
Using the engineering code ##4636##, you can see a broader test menu, and if you go to the Information about battery, you can see a detailed discharge history and a graphical representation of the charge level, and this information is useful in diagnosing a fast-setting battery.
Display problems and calibration methods
Sometimes users are faced with a situation where the percentage of charging is displayed incorrectly: the value freezes in one place, drops quickly or the phone turns off when there is a charge, this indicates a desynchronization of data between the power controller and the operating system.
The classic calibration method is to fully cycle the discharge and charge. Discharge the smartphone until it's completely turned off. Then, without turning the device on, put it on charge and wait until the indicator reaches 100%. Then you can turn on the phone. If the indicator is below 100%, continue charging when it's on until it's maximum.
For more precise calibration, you can use specialized applications from Google Play, such as Battery Calibration, which help to reset the batterystats.bin file, which stores battery usage statistics. However, on modern versions of Android, the role of this file is minimal, and often just let the phone completely discharge to zero and then charge to stop.
| Parameter | Normal value. | Critical significance | Action. |
|---|---|---|---|
| Temperature. | 30°C - 40°C | > 45°C | Stop using, remove the cover |
| Tension. | 3.7B - 4.2B | < 3.4V | I need you to charge. |
| Charge cycles | 0 - 500 | > 800 | Planning to replace AKB |
| Health (Health) | Good | Bad / Overheat | Diagnostics in the service |
If the calibration problem persists, it may be due to the physical wear of the battery or a malfunction of the plume, in which case the software methods are powerless and require the intervention of a specialist.
Optimization and extension of battery life
The right percentage setting is just the first step: To make your Xiaomi or Redmi enjoy the autonomy as long as possible, you need to follow the rules of operation. Lithium polymer batteries used in smartphones are sensitive to temperature changes and deep discharges.
Try to keep your charge level in the range of 20% to 80%. Constant charging to 100% and discharge to 0% create excess voltage on the cells, accelerating the degradation of battery chemistry. MIUI has a feature for optimizing night charging, which helps to extend the life of the battery, suspending charging at 80% until you wake up.
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Use original chargers or certified counterparts with support for Quick Charge and Power Delivery protocols. Cheap power supplies can damage the power controller.
Also worth paying attention to background processes. Apps that constantly use geolocation or update content in the background can not only quickly land the battery, but also cause the device to heat up. Regularly check the Battery partition and performance to identify such "eaters" of energy.
⚠️ Warning: Do not leave your smartphone on charge for long periods under direct sunlight or on heaters. Overheating is the main enemy of lithium batteries, leading to bloating and loss of capacity.
Including Dark Mode (Dark Mode) on the AMOLED-The black pixels in these arrays are simply turned off, which is especially true for models with high-resolution screens, where the backlight consumes a significant part of the energy.