How to know the residual battery capacity on Xiaomi: all working methods

The battery is one of the most vulnerable components of Xiaomi’s smartphone, which loses some of its original capacity with each charging cycle. After 1-2 years of active use, the battery can degrade by 20-30%, leading to rapid discharge, sudden shutdowns and charging problems. But how exactly do you know how worn out your Redmi, POCO or Mi battery is? Official Android settings do not show this information, and data like “battery health” in Settings → Battery is often misleading.

In this article, we’ll look at 5 proven ways to determine Xiaomi’s battery residual capacity, from hidden engineering menus to ADB commands and third-party apps. You’ll learn what’s considered normal, how to interpret numbers, and what to do if the battery is worn out critically. All methods have been tested on Redmi Note 10/11/12, POCO X3/X4/X5, Mi 11/12/13 and other MIUI 12-14-based smartphones.

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

The fastest way to get data about the battery is to use a hidden engineering menu, which is available on most Xiaomi smartphones without root rights, but requires you to enter special code.

Instructions:

• 📱 Open the Phone application and go to the dialing tab.
• 🔢 Enter the code ##4636## (some models may require #6484##).
• 📊 In the menu that opens, select Battery Information).
• 🔍 Note the lines: Level – current percentage; Health – may be displayed as Good, Unknown or percentage; Capacity – sometimes shows real value in mAh.

⚠️ Note: On new Xiaomi models (e.g. Redmi Note 12 Pro)+ Xiaomi 13T) The engineering menu may be blocked, in which case use alternative methods from the following sections.

2.Use of ADB-Teams (for advanced users)

If the engineering menu is not available, you can get the battery data through Android Debug Bridge (ADB), which requires connecting the smartphone to the computer, but gives the most accurate information.

Step-by-step:

1. Download and install ADB Tools on PC.
2. Turn on Developer Mode: Go to Settings → About Phone. Click 7 times on the MIUI Version bar. Go back to Settings → Additional → For Developers and activate Debugging over USB.

adb shell


dumpsys battery

• Capacity is the current charge in %;
• charge_counter — Real capacity in mkAh (divided by 1000 for mAh);
• Health is the state (2 = good, 3 = bad).

Critical information: Meaning charge_counter This shows the actual capacity of the battery in microamp-hours, for example, if the factory capacity is 5000 mAh, ah. charge_counter show 3500000 μAh (3500 mAh), wear is 30%.

Install ADB Tools on PC|

Enable Developer Mode on Xiaomi|

Activate Debugging via USB|

Connect the phone with the original cable |

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

3. Applications for battery diagnostics

If you don't want to mess with code, you can use third-party utilities, the best of which are AccuBattery and CPU-Z.

AccuBattery (free, with premium options):

• 📊 Shows real capacity after several charging cycles;
• 🔋 Tracks the wear rate and temperature;
• ⚡ Provides recommendations for the extension of the service life.

CPU-Z (free):

• 📱 Battery tab displays charge level, voltage and temperature;
• 🔍 It shows the state of health (if maintained);
• 📉 You can compare the current figures with the factory.

⚠️ Note: Applications take time to collect data (minimum 2-3 charge cycles) Don’t trust instant estimates of battery health – they are often based on indirect metrics.

4. Verification through Xiaomi service codes

Xiaomi hides some diagnostic features behind special codes, one of which is ##6484##, which opens the battery testing menu.

How to use:

1. Open the Phone app and enter the code: ##6484##.
2. In the MBAT Test menu, select Battery Info.
3. Note: Voltage – voltage (normal: 3.7-4.2 V); Temperature – temperature (optimally: 25-40 ° C); Capacity – if displayed, shows real capacity.

On some models (such as the POCO F3 or Redmi K40), this code may not work, so try the alternative: ##64663## (MIUI Test menu).

💡

If service codes don't work, try typing them in without a character at the end (e.g. ##4636# instead of ##4636##).

5. Assessment of wear on indirect grounds

If none of the above methods worked, you can estimate the battery status by the behavior of the smartphone:

• ⚡ Operating time: The new Xiaomi with a capacity of 5000 mAh should hold a charge of 1.5-2 days with moderate use. If the phone discharges in 4-6 hours - wear critical.
• 🔌 Charging: The battery is charging too fast (in 30–40 minutes) or too slow (more than 3 hours) – a sign of degradation.
• 🌡️ Overheating: If the phone is heated above 45°C when charging or running simply, this may indicate battery problems.
• 📉 Sudden shutdowns: Smartphone shuts off at 20–30% charge – a classic symptom of wear and tear.

For a more accurate assessment, a discharge test can be performed:

1. Charge the phone to 100%.
2. Turn off the energy saving and use your smartphone as normal.
3. Take a look at the time it takes the charge to drop to 0%.
4. Compare with factory specifications (for example, for Redmi Note 11 norm – 8-10 hours of active screen).

💡

If the phone runs down 1% in 1-2 minutes on standby, it’s a clear sign of critical battery wear or software failure.

What to do if the battery capacity has fallen?

If the test showed that the battery capacity fell below 70% of the factory, it is time to take action:

• 🔧 Calibration: Completely discharge the phone, then charge to 100% without interruption. Repeat 2-3 times.
• ⚡ Charging optimization: Avoid charging to 100% (optimum 80%); Do not discharge below 20%; Use original chargers.
• 🔄 Resetting: Sometimes software errors MIUI They distort the battery data. Try resetting to factory settings. → The phone. → Resetting settings).
• 🛠️ Battery replacement: If the capacity is below 60%, the battery should be replaced. Xiaomi's official service centers use original batteries with a guarantee.

⚠️ Warning: Don't buy cheap battery analogs in markets or untested online stores. Fake batteries can swell, overheat or damage your smartphone. Xiaomi's original batteries have a hologram and a serial number that can be checked on the manufacturer's website.

FAQ: Frequent questions about Xiaomi's battery residual capacity