How to see the remaining battery capacity on Xiaomi: all working ways

A smartphone battery is like a human heart: it gets old over time, losing its original capacity. If your Xiaomi started to run out in half a day and used to hold a charge for a day, it's time to check the degree of wear of the battery. But how do you know the real capacity if the manufacturer hides this data? In this article, 5 proven methods, from simple codes to professional tools, with explanations for beginners and technical nuances for experienced users.

Many people mistakenly think that you just have to look at the phone's settings, but you'll only see the percentage of charge, not the actual wear and tear. 100% On the screen, the actual capacity may be 70-80% We're going to go through formal and informal ways, including hidden menus. MIUI, team ADB, and specialized applications - with an indication of the pros and cons of each.

Important: The techniques work on most Xiaomi, Redmi and POCO models (from Redmi Note 4X to Xiaomi 14 Ultra), but some features may not be available on budget devices or versions for China.If your smartphone is on custom firmware, some of the instructions will require adaptation.

Codes for quick check (without applications)

The easiest way to do this is to use service USSD-codes that will trigger a hidden menu with battery data, which work on most Xiaomi smartphones with factory firmware. MIUI (version 12 and newer).

Open the phone application and enter one of the codes:

• 🔢 ##4636## - Universal code for Android (section "Battery Information")
• 🔢 ##6484## - Hardware test (Battery tab)
• 🔢 ##64663## - alternative code for new models (e.g. Xiaomi) 13T)

After entering the code, you will see a window with the following parameters:

• Level - current charge in percentage
• Voltage - voltage (normal: 3.7-4.4V)
• Temperature - temperature (optimally: 20-40 ° C)
• Health – Battery status (if any)

⚠️ Note: On some models (e.g, POCO F5) The codes may not show the Health parameter, in which case use the methods in the following sections.

If the code doesn't work, check:

1. No gaps in input
2. Network connection (on some firmware codes are blocked without the Internet)
3. MIUI version – older versions (below 10) may not support codes

2. Engineering menu (Engineer Mode) - hidden data

The engineering menu is under the hood of your Xiaomi, where detailed parameters of hardware components, including the battery, are hidden.

Step 1. Enter the access code:

##36446337##

or

##4636## → Hardware testing → Battery

Step 2. From the Engineer Mode menu, select Hardware Testing → Battery Information

Here you will see the extended data:

• 🔋 Battery capacity - current capacity in mAh (compare with factory capacity)
• 📊 Charge counter - charge cycle counter
• ⚡ Voltage OC — stress
• 🌡️ Temperature - Temperature in degrees Celsius

For comparison, if your Redmi Note 11 box has a capacity of 5000 mAh and the engineering menu displays 4200 mAh, wear is 16% – this is a critical indicator for replacing the battery.

⚠️ Warning: Do not change the settings in the engineering menu unless you understand their meaning! Incorrect settings can lead to overheating of the battery or failure of charging.

View the current capacity (Battery capacity)

Compare with the factory capacity (indicated on the box or in the characteristics of the model)

Estimate the temperature (normal: 25-40 ° C)

Check voltage (normal: 3.8-4.3V at 100% charge)

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3. Applications for battery diagnostics

If the codes and the engineering menus don't show you the information you need, use specialized applications that analyze data from the battery controller and give you a percentage of wear, the number of charging cycles, and even a forecast of the remaining life.

Top.-3 Proven applications for Xiaomi:

How to use AccuBattery (Step-by-step):

1. Install the app and allow access to battery data.
2. Charge your phone to 100% and wait for the calibration notification.
3. After 2-3 full charge/discharge cycles, open the Health tab.
4. Compare the design capacity with the factory.

Critical battery wear occurs when the capacity falls below 60% of the factory, in which case the battery is recommended to be replaced, as it can suddenly turn off even at 30-40% charge.

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If the application shows a capacity above the factory capacity (for example, 5500 mAh instead of 5000 mAh), it is a calibration error. Reset the data in the application settings and repeat the charging cycle.

4. Check through ADB (for advanced users)

If you want the most accurate data, use Android Debug Bridge (ADB), a tool for interacting with the Android system through a computer, which is suitable for all Xiaomi models, including POCO and Black Shark.

Step 1: Preparation

• 🖥️ Install. ADB Tools on PC.
• 📱 Enable Developer Mode on your phone: Go to Settings → The phone. → Version. MIUI and tap 7 times.
• 🔌 Turn on the debugging. USB In Settings → Additionally. → For developers.

Step 2: Connect and commands

1. Connect your phone to your PC via USB (use the original cable!).
2. Open the command line (Windows) or the terminal (Mac/Linux) in the folder with adb.exe.
3. Enter the commands in turn: adb devices (the name of your device should appear) adb shell dumpsys battery

In the commands output, find the lines:

• Capacity – current charge in %
• Voltage - voltage mV
• temperature - temperature in tenths of °C (for example, 280 = 28.0 °C)
• charge_counter — current capacity in mkAh (divided by 1000, to get a mAh)

Example of conclusion:

level: 85




voltage: 4023 (mV)




temperature: 310 (°C)




charge_counter: 3800000 (μAh = 3800 mAh)

Compare. charge_counter It's a factory tank, like Xiaomi. 12 Pro factory capacity 4600 mAh, ah. charge_counter show 3500 mAh, wear is a bit of a drag. ~24%.

⚠️ Attention: Teams ADB Requires unlocked bootloader on some models (for example, Xiaomi 13 S) MIUI 14) If the team is not working, check the security settings in For Developers.

5. Hardware diagnostics (through a tester or service center)

If software methods have shown conflicting results, or you suspect a hardware malfunction (battery bloating, sudden charge spikes), consult a physical diagnosis.

Self-checking:

• 🔍 Visual inspection: carefully remove the back cover (if it is removable) and check if the battery is swelling. A bloated battery is dangerous! - it can not be pierced or heated.
• 📏 Thickness measurement: If the phone body starts to "smolt", compare the thickness with the new device of the same model.
• 🔌 Charging test: If the phone only charges in a certain position of the cable, the problem may be the connector or power controller.

Professional diagnostics:

• 🛠️ Xiaomi service center uses special testers (for example, Cadex). C7400), which show the exact capacity and internal resistance of the battery.
• 📊 Cost of diagnosis: ~500-1000 rubles (depending on the city).
• ⚠️ If the wear exceeds 30%, the masters recommend replacement – further operation can lead to a sudden disconnection or damage to the board.

Average battery replacement prices in 2026:

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If the phone shuts down at 20 to 30 percent charge, it's a sure sign of critical battery wear, and if it does, it's a must-replace -- if it's used, it could damage the power controller.

6 How to extend the life of Xiaomi battery: 7 rules

Even if battery wear is not critical, follow these guidelines to slow down the degradation:

• 🔌 Avoid full discharge: keep the charge in the range of 20-80%. Full cycle (0-100%) reduces the life of the battery.
• ⚡ Use Original Chargers: Cheap Cables and Power Units Can Damage the Battery Controller.
• 🌡️ Don’t overheat your phone: Don’t play heavy games while charging, and don’t leave your device in the sun.
• 📵 Disable unnecessary functions: 5G, NFC, GPS And the background synchronization drains the battery.
• 🛁 Calibrate the battery once every 3 months: discharge the phone to 0%, then charge to 100% without interruptions.
• 🔄 Update the firmware: in new versions MIUI Optimized energy consumption.
• 🚫 Do not use “fast charging” constantly: if you are not in a hurry, charge in standard mode.

For models that support wireless charging (such as the Xiaomi 13 Pro or Mix Fold 3), avoid overheating while charging – remove the case and use the original docking stations.

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Xiaomi has a hidden option called “Optimized Charging” (Settings → Battery → Battery Settings) that allows the phone to automatically limit its charge to 80% at night and to recharge to 100% by morning.

FAQ: Frequent questions about Xiaomi battery