How to accurately check battery wear on Xiaomi smartphones: hidden codes, apps and ADB

The battery is the most vulnerable component of Xiaomi’s smartphone, which loses capacity with each charging cycle. After 1-2 years of active use, real capacity can decrease by 20-30%, leading to rapid discharge, overheating and unexpected outages. But how do you know the exact wear of the battery if the manufacturer does not show this information in standard settings?

In this article, you will find 5 proven ways to check battery wear on Xiaomi, Redmi and POCO, from hidden engineering menus to professional utilities. We will analyze what is considered normal and when it is time to think about replacing a battery. All methods work on devices with MIUI 12-14 and HyperOS, including Xiaomi 13/14 models, Redmi Note 12/13 and POCO F5/X5.

1. Check wear through hidden engineering menu (#4636##)

The fastest way to assess battery health is to use the hidden Android menu, which is available on most Xiaomi smartphones without root rights.This method shows the battery’s charge level, voltage, temperature and health status.

Instructions:

• 📱 Open the Phone app and enter the combination: ##4636##.
• 🔍 In the menu that appears, select the tab “Battery information” (Battery information).
• 📊 If you look at the Health line, the optimal value is "Good." If you say Unknown or Dead, the battery is critically worn out.
• 🔋 Check Level (charge level in %) and Voltage (voltage in mV). Normal voltage charged battery is 4.2-4.4 V.

⚠️ Note: Some Xiaomi models (e.g. Redmi) 10C or POCO M4 Pro) ##4636## can be blocked, in which case use alternative methods from this article.

Try entering the code through the “Number Dial” app from Google

Install a third-party dialer (such as True Phone)

Use it. ADB-Team (section 4 of this article)

Try another code: ##6484## (for some models)

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2. Diagnostic applications: AccuBattery, CPU-Z and AIDA64

If the engineering menu is not available, third-party apps will come to the rescue, analyzing data from the battery controller and showing the real capacity, the number of charging cycles and the percentage of wear and tear.

• 🔋 AccuBattery is the most accurate battery health monitoring app, showing current capacity, discharge rate and wear rate as a percentage. Minus: requires calibration (multiple full charge-discharge cycles).
• 📊 CPU-Z — Battery displays temperature, voltage and charge level, suitable for rapid diagnosis, but does not show wear directly.
• 🛠️ AIDA64 — professional utility with Battery section, where the battery technology is specified (Li-ion/Li-Po), nominal capacity and current state.

📌 How to use AccuBattery for accurate verification:

1. Install the application and allow access to battery data.
2. Charge your phone to 100% and wait for automatic capacity determination.
3. In the Health section, look at the Wear estimate: Up to 10% is excellent, 10-20% is normal, over 30% is critical.
4. To calibrate, perform 2-3 full charge-discharge cycles (from 0 to 100%).

💡

If AccuBattery is below 80% of its rated capacity, the battery needs to be replaced, for example, for Xiaomi 11T Pro with a factory capacity of 5000 mAh, a value below 4000 mAh is a signal to action.

3. Analysis of battery logs via ADB (for advanced users)

The method is for those who are willing to use the command line. ADB (Android Debug Bridge) provides full battery logs, including actual capacity, number of cycles, and date of first use, which works on all Xiaomi models, but requires a PC connection.

🔧 Step-by-step instruction:

1. Download Platform Tools (includes adb.exe) and unpack the archive.
2. Turn on USB Debugging on your phone: Go to Settings → About Phone → MIUI version (click 7 times to activate Developer Mode), then to Settings → Additional → For Developers → Debugging over USB.
3. Connect your phone to your PC and in the command line (in the folder with adb.exe) type: adb shell dumpsys battery
4. In the conclusion, find the lines: capacity: X (current charge in %), voltage: X (voltage in μV), charge_counter: X (real capacity in μAh, divide by 1000 for mAh).

🔍 Decoding of key parameters:

⚠️ Attention: If charge_counter signifies 20–30% below the factory capacity (e.g, 3500 m.h. 5000 mAh, the battery is very worn out, and even replacing the battery may not solve the problem completely, because the power controller might have become accustomed to low capacity.

Hidden Engineering Menu (#4636##)

AccuBattery application

ADB-team

Another way.

Never checked.-->

Check through the Xiaomi service menu (##6484## or ##64663##)

Xiaomi hides an extended service menu where you can see detailed information about the battery, including the date of production, the number of cycles and the current capacity. This method works on most devices with Qualcomm processors (for example, Redmi Note 11 Pro, POCO X4 Pro).

🔢 Instructions:

1. Open the Phone app and type in ##6484## (for new models) or ##64663## (for older models).
2. Select from the menu «MBB Information» → «Battery».
3. Pay attention to this: 📅 Manufacture Date: Battery production date (if more than 2-3 years have passed, capacity is likely to have decreased). 🔄 Cycle Count – Number of full charging cycles (norm up to 500). 🔋 Full Charge Capacity – real capacity in mAh (compare with factory).

💡 Example of decryption: If your Xiaomi 12T factory-capacitor 5000 The service menu contains Full Charge Capacity: 3800 mAh, wear is a bit of a drag. 24% (5000 – 3800 = 1200; 1200 / 5000 × 100%).

5. Assessment of wear on indirect grounds (without programs)

If you don't want to install apps or dig into your settings, you can measure battery wear by the behavior of your phone, which are indirect but often point to battery problems:

• ⚡ Fast discharge: the phone discharges by 20-30% in 1-2 hours in standby mode (when the screen is turned off).
• 🔥 Overheating when charging: the body heats up above 45°C (can be checked by the annex) AIDA64).
• 📉 Unstable percentage of charge: for example, the phone turns off at 15-20% or jumps from 30% to 1%.
• ⏱️ Long charging: from 0 to 100% longer than 2.5-3 hours (using the original RAM).
• 🔌 Spontaneous shutdowns: The phone turns off at 10-30% charge, although the indicator shows a normal level.

📊 Table: Correspondence of symptoms and wear of the battery

⚠️ Note: If a Xiaomi phone suddenly shuts down at 10-40% charge, this may indicate not only battery wear, but also a malfunction of the power controller.In this case, replacing the battery may not solve the problem - you will need a diagnosis of the motherboard.

💡

If the phone runs 1% in 1-2 minutes when used actively (e.g. in games), the problem is more energy consumption than battery wear. Check the apps in battery settings (Settings → Battery → Battery Use).

6.When to change the battery: criteria for Xiaomi

Xiaomi does not set strict standards for battery wear, but there are generally accepted standards that will help make a decision about replacing the battery:

• 🔋 Capacity below 80% of the factory: significantly reduced working time, requires frequent recharging.
• 🔄 More than 500 charging cycles: Even if the capacity is still normal, the risk of a sudden failure increases.
• 📅 Battery age >3 years: Lithium-ion batteries degrade even without use.
• 🚨 Physical defects: bloating of the body, leaks of electrolyte (seen by the white plaque on the board).

💰 The cost of replacing the battery in Xiaomi:

Important: After replacing the battery with Xiaomi, be sure to calibrate – completely discharge and charge the phone 2-3 times in a row, this will help the power controller correctly determine the new capacity.

FAQ: Frequent questions about Xiaomi battery wear