Owners of Xiaomi, Redmi and POCO smartphones often face a situation where the device starts to run out faster than usual, although it has not been much time since purchase. The main reason for this phenomenon is the natural physical wear of the lithium-polymer battery, which depends on the number of full recharge cycles. Understanding how many times your phone has been charged helps to objectively assess the status of the battery and plan its replacement before the gadget spontaneously turns off in the cold.
Unlike Windows laptops, where cycle data can be seen in a standard system report, Android often hides this information from the average user. However, the system still keeps records of each cycle, writing data to special system partitions. One full charging cycle is considered to be passed when you have spent 100% of your battery capacity, whether you have charged your phone once from 0% to 100% or four times from 25% to 50%. Knowing the current status helps you to know whether to expect sudden shutdowns or the phone will last for a long time.
There are several proven ways to access these statistics, ranging from simple USSD-We'll look at each of these, and evaluate their accuracy and applicability for different versions of the shells. MIUI It is important to understand that no software method gives a 100% guarantee, as manufacturers can hide this data, but a comprehensive approach will give the most reliable picture of the health of your device.
What is a charging cycle and how does it affect the battery
Before we get into the technical details of the test, we need to understand the physics of the degradation process. Lithium-ion and lithium-polymer batteries, which are used in all modern Xiaomi smartphones, have a limited chemical resource. Manufacturers usually guarantee that about 80% of the original capacity is saved after 500-800 full charging cycles. After that, the battery does not die instantly, but its rated capacity begins to fall rapidly.
Many users mistakenly believe that a cycle is a single charger connection. In fact, the power controller algorithms add up the energy spent. If you charge your phone to 100%, spend 60% and put it back on charge, it won't count as a full cycle. The system will take into account 60% of the use. Only when the sum of the given currents reaches 100% of the battery capacity, the cycle counter will increase by one, which is why frequent charging in small portions is less harmful to battery chemistry than full discharges to zero.
Constant monitoring of cycles allows you to notice anomalies in time. For example, if your phone is six months old and the meter shows 400 cycles, this may indicate a software failure or a malfunction of the controller. Under normal conditions, a smartphone takes about 250-300 cycles per year of active use, exceeding this value by twice for no apparent reason requires attention.
- 🔋 A charging cycle is a consumption of 100% of the battery capacity, not a single connection to the network.
- 📉 After 500 cycles, the battery can lose up to 20% of its original capacity.
- ⚡ Deep discharge (up to 0%) accelerates the degradation of the chemical composition of the cell more than partial recharging.
⚠️ Warning: Do not attempt to artificially “twistle” or reset the cycle counter with root rights. This can lead to desynchronization of the readings of the Fuel Gauge (fuel sensor) and controller, which will cause the phone to show 100% charge and turn off after 10 minutes.
Checking through the CIT (CIT Test) Engineering Menu
The most affordable and secure way to get battery status information on Xiaomi devices is to use the built-in CIT engineering menu.This tool is designed for factory diagnostics and contains data that is usually hidden in a standard interface. It does not require superuser rights or a computer connection to access it, making it ideal for quick verification.
To get into the menu, open the standard Phone app and dial the combination ##6484##. If the code works, the test list will open. You are interested in the battery-related item (often called Battery info or Battery Status). In some versions of MIUI, the path may differ, so it's worthwhile to look carefully at the list. Inside you will find parameters like Design Capacity and Actual Capacity, as well as a cycle counter.
However, it is worth considering that in the latest updates to the HyperOS shell and new versions of MIUI 14, Xiaomi has begun to hide some detailed options in this menu. If you do not find the line "Cycle Count" or "Charge Counter", this does not mean that the data is not kept - just access to them is limited software, in which case move on to the following methods.
It is important to interpret the data correctly: If the current capacity is significantly lower than the design capacity (for example, 3,500 mAh instead of 4500 mAh), and cycles are few, this may indicate defective or extreme operating conditions (overheating), if cycles are many, and the capacity has fallen proportionally, this is normal wear.
Using the Mi Second Transfer application for accurate data
The official Mi Second Transfer application (or MIUI Second Transfer is a utility that was originally created to test a device when buying from hand, but it is also great for diagnosing your own gadget. The program shows detailed information about the hardware, including the actual battery mileage, which often coincides with factory calibration data.
Once you install and run the app, it will automatically analyze the system, and in the power section, you'll see the "Cycle Count" setting. This value is the closest to the truth, since the application reads data directly from proprietary parts of the system, which is not accessible to conventional software. 2-3 year-end.
It is worth noting that the application may not work on devices with installed Root rights or unlocked bootloader, as Xiaomi security system can block access to critical data in a modified environment.
- 📱 The app shows the phone’s “mileage” in days and the number of charging cycles.
- 🔍 Data is read from system logs, bypassing standard interface constraints.
- 🛡️ The program is secure and does not require special permissions to read basic statistics.
⚠️ Note: Only download the app from trusted sources, such as the official Google Play store or trusted forums (4PDA, XDA). Modified versions APK They may contain malicious code.
Detailed diagnostics via ADB and Fastboot
For users who want to get the most complete data and are not afraid of working with the command line, there is a method of connecting via Android Debug Bridge (ADB), which allows you to pull raw data from system files, including the exact number of cycles, voltage and temperature of the cells. You will need a computer (Windows, macOS or Linux) and installed ADB drivers.
The first step is to activate the debugging mode on your smartphone. Go to Settings → About Phone and quickly click on MIUI Version (or OS Version) seven times until the message “You’ve become a developer” appears. Then go to Settings → Advanced Settings → Developer and turn on the USB Debugging switch.
Connect your phone to your computer with a cable. Open the command line (CMD) or terminal on your PC in the folder with ADB. Enter a command to check the connection:
adb devicesYou'll see a request for debugging permission on your phone, confirm it. If you have a serial number on your device, you've got the connection. You can now request battery data.
adb shell dumpsys batteryThis command will output a large list of parameters. Look for cycle count or charge counter strings. The value in this line is the number of cycles you want. If you don't output this information, try a deeper command that addresses the file system:
adb shell cat /sys/class/power_supply/battery/c