How to Check the Battery Life on Xiaomi: From Redmi to POCO

The battery is the most vulnerable component of any Xiaomi smartphone, and its wear and tear directly affects the battery life of the device. Even if your Redmi Note 12 or POCO X5 Pro holds a charge worse than a year ago, this does not always mean critical wear and tear: the problem may lie in the background processes or a faulty charger. But how to objectively assess the state of the battery without visiting a service center?

In this article, we will analyze 5 proven methods – from hidden engineering menus to third-party applications that will show the exact percentage of battery wear, the number of charging cycles and the real capacity in mAh. Particular attention will be paid to models with MIUI 14/15, where standard methods of verification are often blocked by the manufacturer. All instructions are adapted for devices from 2020 to 2026 release, including the Redmi line, POCO, Xiaomi 13/14 and Mi Notebooks.

The fastest way to get data about the battery is to use the hidden engineering menu available on most Xiaomi smartphones (except for some models with MIUI 14+, where it can be disabled), which does not require root rights and works even on locked bootloaders.

Instructions:

📱 Open the phone app and enter the combination: ##4636##.
🔧 In the menu that appears, select Battery Information (or Battery Information).
📊 Note the parameters: Charge level (current percentage) Health status - this can display Good (good), Unknown (unknown) or Dead (critical wear). Temperature (optimum: 25-35°Voltage (in millivolts, normal: 3700-4200 mV for Li-Pol batteries).

⚠️ Note: On some devices (e.g. Xiaomi 13 Ultra or POCO F5) The engineering menu may be blocked, in which case use alternative methods from the following sections.

📊 What kind of smartphone you Xiaomi?

Redmi (Note/Pro)

POCO (F/X/M)

Xiaomi (11/12/13/14)

Black Shark

Other

2. USSD codes for battery diagnostics

If the engineering menu is not available, try the special menu. USSD-codes that run on most Xiaomi and Redmi devices, which allow you to get advanced information about the battery, including the actual capacity and number of charging cycles.

List of working codes (2026):

🔢 ##6484## - Battery test (shows temperature, voltage, wear level).
🔢 ##64663## - Advanced battery diagnostics (works on the battery) MIUI 12–15).
🔢 ##44336## - information about battery production (release date, serial number).

Once you enter the code, you'll see a table with the parameters, the main metrics to look at:

Parameter	Normal value.	Critical significance
Capacity (mAh)	≥ 80% of the factory	< 60% (replacement required)
Number of cycles	< 300	> 500 (severe wear)
Temperature (°C)	25–40	> 45 (overheating)
Voltage (mV)	3700–4200	< 3500 or > 4300

⚠️ Attention: On devices with MIUI 14+ Some codes may not work due to manufacturer restrictions, in which case use the applications in Section 4.

3. Checking through ADB (for advanced users)

If standard methods don’t work, you can get your battery data through Android Debug Bridge (ADB), which requires connecting your smartphone to your computer, but provides the most accurate information, including actual capacity and wear percentage.

Step-by-step:

🖥️ Install. ADB Tools on PC.
📱 Turn on Debugging. USB on a smartphone: Settings → The phone. → Version. MIUI (Press 7 times to activate Developer Mode, then Settings → Additionally. → For developers → Debugging by USB.
🔌 Connect the device to the PC and execute in the command line: adb shell dumpsys battery
📋 In the conclusion, find the lines: capacity - current capacity in %. charge counter - real charge in μA·h (divided by 1000 to get mA·h health - state (2). = Good, 3. = bad).

💡 Example of inference:

health: 2


charge counter: 3850000 (3850 mAh)




capacity: 89

In this case, the real battery capacity is 3850 mAh at the factory 4300 mAh, which corresponds to wear of ~10%.

Install ADB Tools on PC|

Enable the developer mode on Xiaomi|

Activate debugging via USB|

Connect the original USB-cable|

Start the command line on behalf of the administrator-->

4. Battery monitoring applications

If you don't want to mess around with codes or ADBs, use specialized applications that analyze sensor data and show wear in a user-friendly format.

📊 AccuBattery tracks charging cycles, temperature and real capacity. Redmi/POCO/Xiaomi.
🔋 Battery Guru – shows the percentage of wear and predicts the remaining life.
🛠️ CPU-Z — Battery displays voltage, temperature and health.
📈 3C Toolbox - Extended utility with support MIUI (It requires root for full functionality).

⚠️ Note: Applications without root rights can show approximate data. Use AccuBattery for accurate diagnosis (it is calibrated after 2-3 charging cycles).

📌 How to interpret the results?

🟢 Wear 0-10% - battery in excellent condition.
🟡 Wear 10-30% – normal level for a device older than 1 year.
🔴 Wear 30-50% - a noticeable reduction in autonomy, it is worth thinking about replacing.
⚫ Wearing >50% critical level, battery may suddenly shut down.

💡

For more accurate results in AccuBattery, turn off battery optimization for this application in the MIUI settings (Settings → Applications → Battery Management → Battery Optimization).

5.Battery check on Xiaomi laptops (Mi Notebook)

Owners of Xiaomi Mi Notebook Pro, RedmiBook or Mi Gaming Laptop laptops can also check the battery status. BIOS.

Method 1: Through the Command Prompt (Windows)

🖥️ Open the Command Prompt on behalf of the Administrator.
📝 Enter the command: powercfg /batteryreport /output "C:\battery_report.html"
📄 Open the file. battery_report.html In your browser, you can find the sections: Design Capacity, factory capacity, Full Charge Capacity, current capacity, Cycle Count, number of charging cycles.

Method 2: Through the BIOS

🔄 Restart the laptop and press. F2 or Del to enter into BIOS.
🔍 Find the Battery Information section (usually the Advanced or Power tab).
📊 This will show you: Battery Percentage (Battery Health - Normal, Weak or Replace) Number of cycles (Charge Cycles).

⚠️ Note: On Xiaomi laptops with a battery of 40-50 Wh, critical wear occurs when the capacity falls below 60% of the factory. For models with 60-70 Wh, the threshold is higher - 50%.

6. When is it time to change the battery?

Even if the test shows wear and tear of 20-30%, it does not always mean that the battery needs to be changed urgently.

⚡ Fast discharge: the smartphone loses 20-30% of charge in 1 hour in standby mode.
🔌 Unstable charging: the device is then recharged, then discharged during connection to the network.
🔥 Overheating: Battery heats up above 45°C in normal use.
🛑 Sudden shutdowns: the phone shuts down at 15-30% charge.
📉 Bloating: the screen or back cover begins to "step away" from the body.

📌 The life of Xiaomi batteries by models:

Model	Average service life (years)	Critical wear (%)
Redmi Note 10/11/12	2–3	35–40%
POCO F3/F4/F5	2.5–3.5	40%
Xiaomi 12/13/14	3–4	30%
Black Shark 4/5	2–2.5	35%
Mi Notebook Pro	3–5	50%

💡 If the battery wear is over 30% but you are not ready to change it, try calibration:

Discharge the smartphone to 0% and let it stand off for 4-5 hours.
Charge to 100% without interruption (use the original RAM).
Repeat the cycle 2-3 times.

This could temporarily improve autonomy by 10 to 15 percent.

What to do if the battery is blown?

If you notice that the battery is swelling (the body is deformed, the screen is "going away"), immediately: 1. Turn off the device and do not turn it on. 2. Do not try to puncture or bend the battery - this can lead to fire. 3. Contact the service center for replacement. The average cost of replacing a battery in Xiaomi is 1500-4000 ₽ (model-wise).

FAQ: Frequent questions about Xiaomi batteries

🔋 How often should you calibrate your battery on Xiaomi?

Calibration is recommended 1 time every 3 months if you notice unstable charge readings (for example, the phone turns off at 15-20%).

📱 Why Xiaomi 13 Pro battery dies in 4-5 hours, although wear is only 15%?

The problem may not be the battery, but the background processes or non-optimized processes. MIUI. Check it out: 🔍 Settings → Battery → Battery usage (find applications that consume) >10% charge). 🚫 Turn off auto-run of unnecessary apps in Settings → Annexes → Autostart control. 🔄 Update the firmware to the latest version MIUI (In new versions, energy consumption is optimized).

⚡ Can you use 67W charging for Xiaomi with 33W support?

Yes, you can. A smartphone will only take the power it supports (33 watts in your case), but using more powerful RAMs on a regular basis can speed up battery wear by 5 to 10 percent due to heat gain.

🔄 How many charging cycles can Xiaomi battery withstand?

Modern lithium polymer batteries in Xiaomi smartphones are designed for 500-800 full cycles (discharge from 100% to 0%). After that, the capacity drops to 70-80% of the original. For example: Redmi Note 12: ~600 cycles. Xiaomi 13 Ultra: ~700 cycles (due to improved cooling system). POCO X5 Pro: ~500 cycles. One cycle does not necessarily equal one charge. For example, if you charge a phone from 50% to 100%, this is counted as a 0.5 cycle.

💰 Should I change the battery myself?

Xiaomi battery replacement is possible, but not recommended for several reasons: 🔧 Risk of damaging plumes or displays (especially on models with AMOLED-screen). 🔥 Poor-quality batteries can swell or ignite. ⚠️ Loss of warranty (if warranty-based) If you do decide to use the original batteries (the articles can be found on Xiaomi or AliExpress with the Original mark: 800–1500 ₽. Xiaomi 12/13: 1500–2500 ₽. POCO F: 1000–1800 ₽.