The battery is one of the most vulnerable components of a smartphone, which loses capacity with each charging cycle. On Xiaomi devices (including Redmi, POCO and Black Shark), you can check the real state of the battery in several ways, from standard MIUI tools to hidden engineering menus and third-party utilities. But not all methods give accurate information: for example, embedded graphics in Settings β Batteries often show averaged data, rather than actual wear.
In this article, weβll look at 5 proven ways to get detailed information about a battery, from Battery Health to the number of full charge cycles (Charge Cycles), how to read hidden data through ADB, which applications show real capacity, and why the values in the engineering menu may differ from the data in AIDA64, and how to distinguish a fake battery from the original one by serial number.
1. Standard MIUI settings: what you can learn without root
The easiest way is to use the built-in MIUI tools, which will not show exact wear, but will give you a general idea of the battery status.
- π± Open the Settings. β Battery and productivity β Battery status.
- π Scroll down to the Battery Use Chart β here is the spending over the past 24 hours.
- β‘ Click on the icon "Battery" (in the upper right corner) - a window with the current charge level and temperature will appear.
Note the Residual Capacity option (if your MIUI version has one) for example, if the original Redmi Note 12 battery capacity is 5,000 mAh and the system is 4,700 mAh, that means wear is ~6%, but in recent MIUI versions, that is often hidden.
β οΈ Note: Data in standard settings can be reset after updating the firmware or resetting to factory settings. For accurate diagnosis, use the methods in the following sections.
If your smartphone doesnβt have a Battery Status section, try an alternative path:
- Go to Settings. β The phone.
- Tap 7 times on the line version of MIUI to activate the developer mode.
- Return to Settings β Additional β For developers and find the item Battery Status.
2. Engineering menu (#4636##): Hidden battery data
The Engineering Mode contains advanced battery information that the standard settings don't show.
- Open the phone app.
- Enter the code ##4636## (some models may not work β see the alternative below).
- Select the tab "Battery Information".
Here you will see the key parameters:
| Parameter | What does it mean? | Normal values |
|---|---|---|
| Level | Current charge level (%) | 0β100% |
| Voltage | Battery voltage (mV) | 3700-4400 mV (depending on model) |
| Temperature | Temperature (Β°C) | 25β40Β°C (optimum) |
| Health | Battery status | Good (good), Unknown (no data) |
| Technology | Type of battery | Li-ion or Li-poly |
The most important parameter is Health. If it says Good, it means the battery is in normal condition. But on many Xiaomi devices, this item can appear as Unknown β it's not a bug, it's a feature of the firmware.
What if the #4636## code doesnβt work?
If the engineering menu is not available, go to the next method - ADB.
3. Verification through ADB: precise data on charging cycles
ADB (Android Debug Bridge) is a debugging tool that provides the most accurate data about the battery, including the number of charging cycles and the actual capacity.
Install ADB and Fastboot Tools on PC| Enable USB debugging in developer settings | Connect your phone to your computer via cable (not through the hub!)| Allow debugging on your smartphone screen-->
After preparation, run the following commands in the terminal (or PowerShell for Windows):
adb shell
dumpsys batteryIn the answer, find the lines:
- charge counter is the current capacity in microwatt hours (divided by 1000 to get mAh).
- Capacity is the percentage of charge displayed by the system (may differ from the real charge).
- charge cycles: The number of full charge cycles (if any).
Example of output for Xiaomi 13 Pro:
charge counter: 4750000 (β4750 mAh)
capacity: 95
charge cycles: 214If the charge counter is 20% or more less than the passport capacity, it is time to change the battery. For example, for the Redmi Note 11 with the original 5000 mAh, the value of 4000 mAh means 20% wear.
β οΈ Note: On some models (e.g, POCO X5) The dumpsys battery command may not show charge cycles. In this case, use the applications in the following section.
4. Diagnostic applications: AIDA64, AccuBattery and others
If you don't want to mess with ADB, you can install specialized applications. They don't require root rights, but some features (like resetting cycle statistics) can be limited.
Top.-3 Utilities to test the battery on Xiaomi:
- π AIDA64 β It shows Temperature, Voltage, Technology and Status (if supported). Minus: does not display charging cycles.
- π AccuBattery analyzes the actual capacity by discharge graphs. For accurate data, use the application for at least 2-3 days.
- π οΈ CPU-Z β Battery tab shows basic parameters, but without detailed cycles.
Example of data from AccuBattery for Xiaomi 12T:
And if you look at the Health Estimate, if it's below 80 percent, the battery is worn out, and the Capacity vs. Passport graph is also useful, and it shows how different the actual capacity is from what the manufacturer said.
π‘
In AccuBattery, you can enable the Charging Algorithm to alert you when the charge reaches 80%, which will extend the battery life, as constant charging up to 100% accelerates degradation.
5.How to check the originality of Xiaomi battery
If youβve recently changed batteries or bought a smartphone with your hands, itβs important to make sure the battery is original.Fake batteries not only wear out faster, but can also be dangerous (overheating, bloating).
Methods of verification:
- Serial number: Remove the back cover (if it is removable) or gently pluck the battery (on models with a removable battery, for example, Redmi). 4X). Find a sticker with QR-Check the number on the Mi Verify website (not for all regions).
- Appearances: π Xiaomiβs original battery has a holographic sticker with the brand logo. π¦ Contacts should be gold in color, without traces of oxidation. βοΈ The weight of a fake battery is often 10 to 15 grams less.
- Check through the engineering menu: Enter the code ##6484## (works on some models). Select Battery Test β Battery Info. Compare the Manufacturer with official data (for example, ATL or SDI for original batteries).
If the battery is fake, donβt use it, it can damage your smartphone or even cause fire. Xiaomiβs original batteries can be purchased from a branded service center or on the official website.
6. Frequent Mistakes and Myths About Xiaomi Batteries
When diagnosing a battery, users often experience misinterpretation of data, and we'll look at some of the most common misconceptions.
- β "If the phone is running out quickly, the battery is "spoiled" - not always. β Battery β Battery utilization).
- β "Calibration of the battery (discharge to 0% and charge to 100%) will restore capacity" is a myth. Modern lithium-polymer batteries do not require calibration, and deep discharge only harms them.
- β "Applications like AccuBattery can reset the cycle counter β no. The charging cycles are fixed by the battery controller, and can only be changed through the use of a battery controller. ADB (not recommended).
- β "Charging from powerful adapters (67W, 120W) It's a "battery damage" -- wrong if you use the original power supply. Rapid charging reduces the time you connect to the grid, which is even useful for durability.
Another popular question is, "Why is the 4.4V battery on the engineering menu, when the norm is 3.7V?" The fact is that the Voltage shows the current voltage, which depends on the level of charge, at 100% charge it can reach 4.3-4.4V, and at 0% it can fall to 3.0-3.2V.
π‘
The main measure of battery wear is the actual capacity (in mAh), not the percentage of charge, and if it falls below 80% of the passport, it's time to think about replacing it.