Why it is important to know the real wear of Xiaomi battery
The battery is the weakest component of any smartphone, and Xiaomi devices (including the Redmi, POCO and Mi line) are no exception. Over time, battery capacity decreases: after 300 to 500 charging cycles, you may notice that the phone is discharged 20-30% faster than before. But how do you know the exact percentage of wear and tear if the manufacturer does not show this information in standard settings?
In this article, you will find 5 proven ways, from hidden engineering menus to professional utilities, to analyze what data is more accurate (and what can be lied to), how to interpret the results and what to do if the wear has exceeded a critical threshold. Spoiler: on some Xiaomi models, real wear and tear can be found without root rights and third-party applications - through hidden service code # # #4636#.
Important: wear of 20-30% is considered normal after 1.5-2 years of use, but if the indicator exceeds 40%, it is time to change the battery - this is fraught with sudden shutdowns and damage to the power controller.
Method 1: Through the Engineering Menu (#4636##)
The fastest and safest method is to use the hidden Android menu that is available on most Xiaomi smartphones (including Redmi Note 10/11/12, POCO X3/X4, Mi 11/12).It does not require installing apps and works even without the Internet.
Instructions:
- 📱 Open the Phone app** and enter the combination: ##4636##.
Enter the code without spaces and symbols|Try dialing "Contacts" instead of "Phone"|Update the firmware MIUI last-minute|Check if the antivirus is blocking access-->
⚠️ Note: Some models (e.g. Redmi) 9A or POCO M3) This menu may be blocked by the manufacturer, in which case use alternative methods from this article.
| Xiaomi model | Supports ##4636### | Alternative code |
|---|---|---|
| Redmi Note 10/11/12 | ✅ Yes. | #284## (battery test) |
| POCO X3/X4/X5 | ✅ Yes. | ##6484## (Information about ITC) |
| Mi 11/12/13 | ❌ No (lockdown) MIUI) | ##2834## (charge test) |
| Redmi 9/9A/9C | ⚠️ Partially. | #36446337## (EMMC test) |
Method 2: AccuBattery application (without root)
AccuBattery is one of the most accurate battery health monitoring apps that doesn't require root rights. It analyzes charging cycles, temperature and real capacity by comparing it to factory capacity. It's suitable for all Xiaomi smartphones on Android 8.0 and later.
How to use:
- 📥 Install AccuBattery from Google Play.
- 🔋 Charge your phone to 100% and discharge to 0% (important: do not interrupt the cycle!).
- 📊 After 2-3 full cycles, open the Health tab** to show the actual capacity (e.g. 3800 mAh instead of the factory 4000 mAh).
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If AccuBattery is above factory capacity (e.g., 4200 mAh instead of 4,000 mAh), it's a calibration error. Reset the stats in the app settings and repeat the charging cycle.
⚠️ Note: The app can reduce wear by 5-10% due to the specifics of the Xiaomi power controller, ADB).
Engineering menu |AccuBattery|ADB|App from the manufacturer |I'm not checking-->
Method 3: ADB commands (for advanced users)
If you want the most accurate data, use Android Debug Bridge (ADB).This method works on all Xiaomi smartphones, but requires a computer connection and basic command line knowledge.
Step-by-step:
- 💻 Install. ADB Tools on PC.
- 🔌 Connect the phone to the computer and turn on “Debugging by” USB»** In Settings → The phone. → Version. MIUI (Press 7 times to activate the developer mode).
adb shell
dumpsys batteryIn the conclusion, find the lines:
- Health: 2 - battery in good condition (wear up to 10%).
- health: 3 - average wear (10-30%).
- health: 4 - severe wear (30-50%).
- Health: 5 - Critical wear (over 50%, replacement required)
- Capacity: 3500 – current capacity in mAh (compare with factory capacity).
How to find out the factory capacity of Xiaomi battery?
⚠️ Attention: On some firmware MIUI The dumpsys battery command may return incorrect data due to manufacturer optimizations:
adb shell cat /sys/class/power_supply/battery/capacityMethod 4: Hidden Test Menu (for Qualcomm processors)
Xiaomi smartphones on Qualcomm Snapdragon chips (for example, Redmi Note 10 Pro, POCO X3 Pro, Mi 11) have a hidden QPST menu where you can check the battery status without root.
Instructions:
- 📱 Enter the dialer code: ##7780## (alternative: ##4636## → Battery information → Menu → Battery history).
- 🔍 In the menu that opens, find the Battery or Power tab – here you can see Full Charge Capacity (real capacity) and Design Capacity (factory).
🔹 Example: Design Capacity = 5000 A Full Charge Capacity = 4200 MACK, I'll wear it out (5000 – 4200) / 5000 × 100% = 16%.
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Smartphones on MediaTek processors (e.g. Redmi 9A, POCO M3) do not support the QPST menu.
Method 5: Official Xiaomi app (Mi Battery Check)
Xiaomi has released its own battery diagnostics app, Mi Battery Check, but it is not available in all regions and only runs on MIUI Global or MIUI China firmware.
How to check the wear:
- 📥 Download Mi Battery Check (if not available in your area, use it) VPN).
- 🔍 Launch the application and wait for the diagnosis to be completed (it will take 1-2 minutes).
- 📊 In the Battery Health section** you will see the percentage of wear and tear and recommendations (e.g. Replace soon when wearing out). >40%).
⚠️ Note: The app can show understated wear values on new models (for example, Xiaomi 13 or Redmi Note 12 Pro).+) optimizing MIUI For accuracy, compare the data with AccuBattery or ADB.
What to do if the battery wears more than 40%?
Wearing over 40% is a critical threshold after which:
- ⚡ Battery discharges 50-70% faster.
- 🔥 The risk of overheating and bloating increases by 3-5 times.
- ⚠️ Phones can shut down at 20 to 30% charge due to incorrect calibration.
Decisions:
- Battery calibration: Completely discharge the phone before it turns off, then charge to 100% without interruption. Repeat 2 to 3 times. This can temporarily improve the performance by 5 to 10%.
- Battery replacement: Xiaomi’s official service centers replace the battery in 1.5-3 hours. Cost: from 1500 to 4000 rubles depending on the model. Use only original batteries (code begins with MBJ or MBD).
- Software optimization: Turn off application background activity in Settings → Battery → Optimization and activate the “Charge Saving” mode**.
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If the battery is swollen (the phone body is deformed), DO NOT try to replace it yourself! contact the service - the risk of short circuit and fire is extremely high.