How to check the battery on Xiaomi Redmi: from capacity to hidden parameters

Why is it important to monitor the battery status of Xiaomi Redmi?

The battery is one of the most vulnerable components of a smartphone. Even in the new Redmi Note 13 Pro+ or Redmi 12, lithium-polymer batteries degrade over time: lose capacity, discharge faster and can suddenly shut down when the charge level is low. Manufacturers say that modern batteries can withstand 400-600 charging cycles, but the real life depends on the operating conditions.

If your Xiaomi Redmi starts to run out in half a day, overheat when charging or suddenly turn off by 20-30%, these are clear signs of battery wear. In this article, we will discuss 5 working ways to check the battery — from standard MIUI tools to hidden engineering menus and third-party applications.

🔋 Check the current battery capacity and the degree of wear
📊 Find out the number of charging cycles and battery temperature
🔍 Diagnose hidden errors through the engineering menu
⚡ Determine whether the battery needs to be replaced or whether charging needs to be optimized enough

All methods have been tested on Redmi Note 10/11/12/13, Redmi 9/10/11, POCO X3/X4/X5 and other MIUI 12-14-based smartphones. If you have a device older than 2018 (e.g. Redmi 5/6), some features may not be available.

📊 How often do you check the battery status?

Once a month

Only when the problems start.

Never checked.

I don't know how to do that.

Method 1: Checking through standard MIUI settings

The easiest way to assess battery health is to use MIUI tools built in, which won’t show the exact capacity in mAh, but will help identify anomalies in energy consumption and wear.

Open Settings → Battery. Here, pay attention to:

📉 Consumption schedule – if the smartphone discharges too quickly (for example, 1% in 2-3 minutes in standby mode), this is a sign of wear or background activity of applications.
🔄 Charging cycles - in some versions MIUI displays an approximate number of complete cycles (e.g., "charge 120 times").
⚠️ Warnings about overheating – if the battery regularly heats above 40°C, it shortens her lifespan.

For more information, go to Settings → Battery → Battery status (available on MIUI 13/14).

🔋 Current capacity (e.g., “4,500 mAh out of 5000 mAh”) – if the value is below 80% of the original, it is time to change the battery.
📊 Wear level (in percent) - critical value starts from 30-40%.

⚠️ Note: Some Redmi models (e.g. Redmi) 9A or Redmi 8) the Battery State section may not be available, in which case use alternative methods from this article.

Open consumption schedule for the last 24 hours | View battery temperature | Find the Battery Status section (if any) | Check overheating warnings-->

Method 2: Hidden codes for battery diagnostics

Xiaomi smartphones have hidden engineering menus that allow you to get detailed information about the battery. USSD-codes or combinations for entry into CIT (Factory Test Mode).

The most useful codes for checking the battery:

🔢 ##4636## - opens the Testing menu, where in the Battery Information section you can see: Charge level (in %) and voltage (in mV) Battery temperature (in %) °C) Charging technology (e.g. Quick Charge 3.0)
🔢 ##6484## - Battery test (not available on all models) shows real capacity in mAh and wear.
🔢 ##64663## - menu MIUI Test, where the Battery section displays hidden parameters, including the number of charging cycles.

How to use the codes:

Open the Phone app.
Enter the code (as in dialing) and press the call button.
If the code works, you'll see an engineering menu. If it doesn't, the code isn't supported by your model.

⚠️ Warning: Do not change the settings in the engineering menu if you do not know their purpose! Incorrect settings can lead to loss of warranty or unstable operation of the smartphone.

What if the code doesn't work?

If nothing happens after you enter the code, try: 1. Remove spaces and symbols (e.g., enter #4636# without stars). 2. Use an alternative launcher (e.g., Nova Launcher), as some shells block engineering menus. 3. Check to see if hidden settings are disabled through security policies (relevant for enterprise devices).

Code.	Appointment	Supported models
##4636##	Information about battery, network, use	All models on Android
##6484##	Battery test (capacity, wear)	Redmi Note 10/11/12, POCO X3/X4
##64663##	Menu MIUI Test (charge cycles)	Redmi 9/10/11, Mi 10/11
##225##	Checking battery calibration	Older models (Redmi 6/7/8)

Method 3: Applications for deep diagnostics

If standard methods don't provide enough information, use third-party applications that let you know the actual battery capacity, the number of charging cycles, and even predict the remaining lifespan.

Top.-3 Proven applications for Xiaomi Redmi:

📱 AccuBattery – shows accurate capacity in mAh, wear, temperature and charging/discharge speed. Suitable for all Android 8.0 models+.
🔋 Battery Guru monitors charging cycles, voltage and predicts when the battery needs to be replaced.
📊 CPU-Z — Battery displays charge level, voltage, technology and temperature.

How to use AccuBattery (the most informative application):

Install it from Google Play.
Charge your smartphone to 100% and wait for the app to collect data (usually requires 1-2 charging cycles).
Go to the Health tab – it will be displayed here: 🔋 Design capacity (e.g., "4200 mAh out of 5000 mAh"). 📉 Wear (%) A value above 30% is a reason to think about replacing. 🔄 Number of charging cycles.

⚠️ Note: Apps like AccuBattery give approximate data. USB-Tester or contact the service center.

💡

If the app shows a battery capacity below 70% of the factory capacity, but the smartphone is working normally, try calibrating the battery: completely discharge the device before turning off, then charge to 100% without interruption. Repeat 2-3 times.

Method 4: Checking through ADB (for advanced users)

If you want the most accurate data, use ADB (Android Debug Bridge), a method that requires connecting your smartphone to your computer, but allows you to get information that is not available through standard menus.

What you can learn through ADB:

🔋 Exact battery capacity in mAh (charge_counter).
📊 Number of charging cycles (cycle_count).
🌡️ Temperature and voltage in real time.

Instructions for verification:

Install ADB Tools on your computer.
Enable USB Debugging on your smartphone: Settings → About Phone → MIUI version (click 7 times to become a developer), then Settings → Additional → Developers → Debugging over USB.
Connect your smartphone to your PC and type in the command line: adb shell dumpsys battery In the answer, find the lines: charge_counter: 4200000 (μAh = mAhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh × 1000) cycle_count: 215

Decoding of key parameters:

Parameter	Meaning	What does it mean?
charge_counter	4200000	Current capacity: 4200 mAhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh (4200000 / 1000).
cycle_count	215	Number of full charge cycles: At > 500, the battery is close to wear.
temperature	350	Temperature in tenths of °C (35.0 °C). Optimal: 25-35 °C.
voltage	4350	Voltage in mV (4.35V) Norm for Li-Po: 3.7-4.4V.

💡

If the parameter cycle_count exceed 500, And the container fell below. 60% The battery needs to be replaced from the factory, and further use can lead to sudden shutdowns or battery bloating.

Method 5: Visual inspection and bloating test

Sometimes you can detect battery problems without software, by physical signs.

🔍 Body bloating – if the back cover or screen has started to “go away”, this is a sign of a bloated battery.
🔥 Overheating – if the smartphone heats up even while in standby mode, the battery may be faulty.
⚡ Uneven charging – for example, the charge jumps from 80% to 100% or the smartphone is turned off by 20-30%.

How to check for bloating:

Place your smartphone on a flat surface (such as a table).
Press the center of the back cover lightly, and if it's playing or bending, the battery is swelling.
Put a flashlight on the junction between the screen and the body, and if you see a gap, it's a sign of deformation.

⚠️ Warning: If the battery is swelling, stop using the smartphone immediately! The risk of fire or damage to internal components is extremely high.

What to do if the battery is swelling?

1. Turn off the smartphone and remove SIM-2. Do not try to charge the device or disassemble it yourself. 3. Contact the official Xiaomi service or authorized center. Replacing the battery will cost 1500-4000 ₽ (If the warranty is valid, repairs may be free of charge (provided that the bloating is not caused by mechanical damage).

When is the time to change the battery to Xiaomi Redmi?

Even if the battery still holds a charge, it should be replaced at the following signs:

🔋 Capacity below 70-75% of factory capacity (for example, 3,500 mAh instead of 5000 mAh).
📉 Smartphone discharges by 50% in 2-3 hours in standby mode.
⚡ Charging is interrupted or slow (for example, 1% in 10 minutes).
🔥 The body heats up even with light load (social networks, instant messengers).
💥 The battery swelled or deformed the body.

The average battery life in Xiaomi Redmi:

Model	Average battery life	Signs of wear and tear
Redmi Note 10/11/12	2–3 years	Capacity drops to 70% after 400-500 cycles.
Redmi 9/10/11	1.5-2.5 years	Quick discharge with active use.
POCO X3/X4/X5	2–3 years	Overheating during charging, jumps in the level of charge.
Redmi 8/8A and older	1-2 years	Bloating, sudden blackouts.

If you're considering replacing your battery, choose original or certified batteries, cheap batteries from China often have understated capacity and can damage your smartphone, and the average cost of replacing them at service centers is:

💰 Redmi Note 10/11: 2000–3500 ₽
💰 Redmi 9/10: 1500–2500 ₽
💰 POCO X3/X4: 2500–4000 ₽

FAQ: Frequent questions about Xiaomi Redmi battery

🔋 How often should you calibrate the battery on Xiaomi Redmi?

Calibration is recommended every 2-3 months if you notice a jump in charge level (for example, from 30% to 1% per second). To do this, completely discharge the smartphone before turning off, then charge to 100% without interruption. Repeat 2-3 times.

⚡ Can I use fast charging if the battery is worn out?

If the battery capacity has dropped below 70%, it is better to turn off fast charging (Settings → Battery → Charging settings → Disable accelerated charging).

📱 Why AccuBattery shows capacity above factory?

This is normal: the app calculates capacity by discharge time, not by physical parameters. If the smartphone is discharged slower than expected, AccuBattery can show inflated values. Use ADB or engineering codes for accuracy.

🔥 What to do if the smartphone overheats when charging?

Causes of overheating: Use of a non-original charger. Application background activity (check Settings → Battery → Usage). Battery wear (replace if capacity is below 70%); Charging in a hot room (optimal temperature: 10–30°C). Solution: Charge your smartphone when off or in airplane mode.

💡 How to extend the life of the battery on Xiaomi Redmi?

Tips for extending service life: 🔌 Avoid full discharge (keep the charge in the range of 20–80%). ❄️ Do not charge your smartphone in the cold (below 0)°C) or in heat (above 40)°C). 📵 Turn off background activity of unnecessary applications. 🔄 Use the original chargers. 🛌 Do not leave your smartphone on charge all night long.