How to check the battery status of Xiaomi: the complete guide

Xiaomi smartphones have long proven to be reliable devices with excellent value for money. However, like all electronics, they are subject to natural wear and the key element here is the battery. Over time, even the best-quality battery loses its original capacity, leading to faster discharge and unexpected shutdowns. Users often need to know the real state of the power unit to understand whether it is time for replacement or software optimization.

Android, which runs the MIUI or HyperOS shell, doesn't have a single wear-check button like laptops. However, there are many indirect and direct ways to assess the health of a lithium-ion battery. We'll look at the standard diagnostics tools, the hidden engineering menus that are available on most models, and specialized deep-analysis applications. Understanding the current battery life will help you plan your maintenance budget or extend the life of your device with proper operation.

It is important to note that diagnostic methods can vary slightly depending on the firmware version and the specific smartphone model, whether it is a budget Redmi or flagship Xiaomi Mi. Some data may be hidden from the average user, but we will tell you how to access this information safely. The actual battery capacity often differs from the declared manufacturer after 500 cycles of full charge and discharge.

Diagnostics through the standard system settings

The easiest and safest way to get the initial information about the status of the battery is to use the built-in tools of the system. In modern versions of the shell MIUI and HyperOS, the developers have implemented quite informative sections that allow you to assess the current situation without installing third-party software. You do not need root rights or connection to the computer, all actions are performed directly on the screen of the smartphone.

To start, you need to go to the settings menu. Find the About phone section or Advanced Settings, where the Battery item often sits. It shows not only the current percentage of charge, but also usage statistics. It can show which apps consume the most power, which indirectly indicates the battery health: if the phone warms up and quickly sits down even in a simple one, it is an alarm.

Also worth noting is the built-in Security app, which is pre-installed on all Xiaomi devices, which has an optimization feature inside it that scans the system for problems, including anomalies in the power system, and if the system detects critical errors or excessive wear, it can issue a warning, although it is not worth relying on this alone.

• 📱 Go to Settings. → Battery for viewing basic statistics.
• 🛡️ Use the Security app to automatically diagnose the system.
• 📊 Check the “Expenditure” tab to identify energy-intensive applications.

The visual signs that a careful user can notice should not be ignored: bloating, heating in the camera area or the back cover when charging are clear symptoms of degradation of the chemical composition inside the battery. The standard tools are good for prevention, but accurate numbers will require a deeper immersion in the system logs.

⚠️ Warning: If you notice that the back cover of the smartphone has started to move away or the screen has risen, immediately stop using the device.

Using the CIT Engineering Menu to Check

One of the most powerful tools for diagnosing Xiaomi devices is the engineering menu, often called the CIT (Customer Integration Test), which is designed to test all components of the device in the factory and in service centers, but is also available to ordinary users, and this is where you can find the most accurate data about the current status of the battery, which is hidden in the normal interface.

To get into this menu, you need to open the standard phone dialer and enter a special code. For most Xiaomi and Redmi models, the combination ##6484## or ##4636##. Once you enter the last digit, the menu will open automatically. If the code does not work, your firmware version may block this access, and then you will have to use other methods.

In the test list that opens, look for Battery Indicator or simply Battery, and if you click on it, you'll see detailed technical information, which shows current voltage, temperature, charge status, and most importantly, battery health status, and can display status as "Good" or indicate calibration needs.

Note the voltage parameter. When fully charged, a serviceable lithium-ion battery should show a value of about 4.2V to 4.4V. If the voltage is much lower at 100% charge, this indicates a loss of capacity. Also, you can often run a discharge test on this menu to help detect sharp percentage jumps.

• 🔢 Enter the code ##6484## in the phone app.
• 🔋 Select Battery Indicator in the Test List.
• 🌡️ Check the temperature and voltage in real time.

The engineering menu is a great way to quickly assess the situation without installing unnecessary programs. However, it is worth remembering that the data here is updated in real time and can be sensitive to background processes. To get the most objective picture, it is better to check when the phone is at rest.

Analysis through hidden commands and USSD-code

In addition to the standard engineering menu, there are additional hidden commands in the MIUI shell that allow you to access battery usage logs, which are accumulated by the system from the moment of the first activation of the device or the last reset of statistics, and analyzing these logs gives you an idea of the number of recharge cycles, which is a key indicator of wear and tear.

Code can be used to access the advanced statistics ##6485##. Once you enter, you'll open a window with a lot of technical parameters, and we're interested in codes that display capacity information. MB_. For example, MB_06 usually shows the state of the battery (Good/Bad), MB_00 — current-rate.

The most important parameter here is the number of recharge cycles, which can be denoted as the number of recharge cycles in different versions of firmware. MF_02 or MF_05. And if you know that number, you can estimate the residual life, and a standard lithium-ion battery is designed to be about the size of a battery. 500-800 full cycles, after which its capacity falls to 80% nominally.

Note that new versions of HyperOS may have some of these codes locked or shared, and then redirect you to the standard battery settings menu, which is done for safety reasons so that inexperienced users don’t change critical grid settings.