How to check the status of the battery on Xiaomi: a step-by-step guide with the decoding of indicators

The battery is one of the most vulnerable components of a smartphone, which loses capacity over time and discharges faster. On Xiaomi devices (including Redmi, POCO and Black Shark), you can check the battery status in several ways, from embedded tools to third-party applications. But how do you know which indicators are critical and which are within the normal range? And why even a new smartphone can show wear and tear of 5-10% from the factory?

In this article, we will look at all the available methods for diagnosing batteries, from hidden engineering menus to professional utilities, and explain how to interpret data correctly. You will learn what values are considered normal for your model, and what to do if the battery has degraded prematurely.

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

The fastest way to get basic battery information is to use the Android hidden menu, which works on all Xiaomi smartphones regardless of the MIUI version (including MIUI 14 and HyperOS).

Instructions:

  • 📱 Open the phone application (caller).
  • 🔢 Enter the combination: ##4636### (some models may require ##6484##).
  • 📊 In the menu that opens, select Battery Information).

Here you will see the key parameters:

  • 🔋 Level of charge (level) - current percentage.
  • ⚡ Voltage – Normal for Li-Po batteries: 3.7–4.4V.
  • 🌡️ Temperature - optimally 20-40°C.
  • 📉 Health – can be displayed as Good, Unknown or Percentage of Wear.

⚠️ Note: Some Xiaomi models (e.g. Redmi Note 12 Pro)+) 4636## can be blocked, in which case use alternative methods from the following sections.

📊 How often do you check the battery status?
Once a month
Only when I notice problems
Never checked.
I use special applications.

2.AccumBattery application: detailed wear analysis

AccuBattery is one of the most accurate battery monitoring apps that works without root rights. It not only shows current wear, but also predicts the remaining battery life based on your charging habits.

How to use:

  1. Download AccuBattery from Google Play.
  2. Launch the application and wait for calibration (may take 1-2 charging cycles).
  3. Go to the Health tab and it will show here:
ParameterWhat does it mean?Normal values
Design capacityCurrent real capacity of the AKB≥ 90% of factory (e.g. 4500mAh out of 5000mAh)
WearingPercentage of capacity loss< 15% is normal, > 20% is critical
Charging cyclesNumber of full discharges/charges< 300 for Li-Po, < 500 for Li-ion
Temperature.Average temperature during charging20–40°C (above 45°C reduces service life)

AccuBattery also shows charging history and warns if you charge your phone frequently to 100% (which speeds up degradation).The app is suitable for all Xiaomi models including the POCO F5, Xiaomi 13T and Redmi Note 11.

Check the battery temperature during charging

Avoiding a discharge below 20%

Do not keep your phone on charge after 100%

- Use the original power supply unit-->

3. ADB commands for advanced users

If you want the most accurate data, you can use ADB (Android Debug Bridge), which requires connecting your smartphone to your computer, but gives you access to hidden battery settings that standard apps don't show.

Instructions:

  1. Install ADB Tools on your PC.
  2. Turn on USB Debugging on your phone: Settings → About Phone → MIUI version (click 7 times to activate Developer Mode), then Settings → Additional → Developers → Debugging over USB.
  3. Connect the phone to the PC and type in the command line:
adb shell dumpsys battery

In the answer, pay attention to the following lines:

  • Health: 2 - battery status (2 = good, 3 = bad).
  • Capacity: 4500 is the current capacity in mAh.
  • Voltage: 4123 - Microvolt voltage (divided by 1000 for volts).
  • Technology: Li-poly is a type of battery.

⚠️ Attention: If in response ADB You see health: 7, which means that the battery needs to be replaced, a status that often appears after a severe overheating or deep discharge (below). 2.8V).

What if the ADB does not recognize the device?
If the team `adb devices` It doesn’t show your smartphone, check it out: 1. Are Xiaomi drivers installed (download from [official website](https://new.c.mi.com/global/miuidownload/index)). 2. Have you allowed debugging on your phone (a request will appear when you first connect). 3. Are you using the original? USB-cable (cheap cables may not support data transmission).

Integrated diagnostics in MIUI (for new models)

Starting with MIUI 12 and later (including HyperOS), Xiaomi’s firmware has a built-in battery-testing tool that is less detailed than AccuBattery, but does not require third-party apps to be installed.

How to find it:

  1. Open Settings → Battery and Performance.
  2. Slap the icon. ⚙️ (gear) in upper right corner.
  3. Select Battery Health (Battery Health) status.

This will show:

  • 📊 Current capacity (e.g, "4850mAh from 5000mAh").
  • 🔄 Number of charging cycles.
  • ⚠️ Recommendations (e.g. “Depreciation of 8% – within the normal range").

On some models (e.g. Xiaomi 14 or Redmi K60), this section may be called Battery → Diagnostics. If there is no item, then your firmware does not support the function – use other methods.

💡

If the built-in diagnostics show wear and tear of more than 15%, but the phone is holding its charge normally, try resetting battery statistics: Settings → Apps → App management → Three dots → Reset application settings. Sometimes this helps correct inaccurate data.

5. Check through Recovery Mode (for power users)

If the phone is not turning on or is not behaving stable, the battery can be checked through Recovery Mode, a method that is suitable for diagnosing dead devices, but requires caution.

Instructions:

  1. Turn off the phone.
  2. Press the Power button + Volume up until the MI logo appears.
  3. In the Recovery menu, select Advanced → Battery info (navigation with volume buttons, choice - power button).

In this mode, you'll see:

  • Voltage – If the value is below 3.0V, the battery is deeply discharged and may not charge.
  • Status is Charging (charged) or Discharging (discharged).

⚠️ Note: If the battery voltage in Recovery Mode shows 0V or N/A, This could mean a chain break or a power controller malfunction, and in this case, self-repair is not recommended.

Third-party applications: alternatives to AccuBattery

If AccuBattery is not suitable for you, there are several alternatives with similar functionality:

AnnexFeaturesSuitable for
Battery GuruMonitors temperature and wear, shows the screen timeAll Xiaomi models
CPU-ZShows voltage, battery technology and capacityFor technical details
3C Battery MonitorDetailed statistics on current, voltage and cyclesAdvanced users

Important: Some applications (like 3C Battery Monitor) require root rights for full functionality, and without them, they can show inaccurate data.

💡

Applications like AccuBattery or Battery Guru provide more accurate results than built-in MIUI tools because they take into account charging history and temperature conditions.

7.When it's time to change the battery: signs of critical wear

Even if the diagnosis shows wear and tear of 15-20%, it does not always mean that the battery needs to be urgently changed.

  • 🔋 Phone's running out of power. 3-4 hours with moderate use (social networks, messengers).
  • ⚡ Charging jumps (for example, from 30% immediately to 50% or vice versa).
  • 🔥 The body heats up strongly during charging or playing.
  • 🛑 The phone turns off when 10-20% charge (false disconnection).
  • 🔌 Does not keep the charge off (discharged overnight).

If you see 2-3 signs from the list, most likely, the battery has degraded. For Xiaomi models older than 2 years, this is normal - the average life of Li-Po batteries is 2-3 years or 300-500 cycles.

Cost of replacing the battery in the service center:

  • 💰 Redmi Note / POCO: 1500–2500 ₽.
  • 💰 Xiaomi 11T/12/13: 2500–4000 ₽.
  • 💰 Black Shark / Mix Fold: 4000–6000 ₽.

FAQ: Frequent questions about Xiaomi battery

🔋 Why Xiaomi’s newest battery wear shows off 5-10% factory?
This is normal: batteries are stored in warehouses before assembly, and in 6-12 months they lose 3-10% of their capacity, and if they wear more than 15% on a new phone, that's a warranty replacement.
⚡ Can I use my phone while charging?
Yes, but it speeds up wear and tear, and when you use it, you get a battery temperature that goes above 40°C, which reduces its lifespan, and you'd better charge it in airplane mode or with the screen off.
📉 How to Calibrate Your Battery on Xiaomi?
Full calibration (discharge to 0% and charge to 100%) is only necessary if the phone shows the wrong percentage of charge. In other cases, it is enough to discharge to 10% every 2-3 months and charge to 90%.
🔥 Why does the battery heat up during charging?
Heating to 40-45°C is the norm for fast charging (33W/67W/120W). But if the temperature is above 50°C, check: Do you use the original power supply, do you have a case on your phone while charging, do you have any resource-intensive applications running?
🔄 How many charging cycles can Xiaomi battery withstand?
Modern Li-Po batteries are designed for 300-500 full cycles (discharge to 0% and charge to 100%). In partial cycles (for example, 80%→40%→80%), the resource increases to 800-1000 microcycles.