Xiaomi’s modern smartphones are equipped with advanced power technologies that can fill the battery in just 30-40 minutes. However, not everyone is happy with this speed, especially at night or when using old cables that can overheat.
With MIUI and its new version of HyperOS, engineers have introduced several levels of control over power consumption, some models allow you to completely turn off accelerated modes through hidden menus, others require more in-depth intervention, and understanding how your phone interacts with the charger is key to a smart setup.
In this article, we will take a look at all the ways you can limit your charging power, where to look for switches in the standard menu, how to activate the engineering mode to turn off functions, and why sometimes the system ignores your settings, which will help you find a balance between speed and security of the device.
Why Xiaomi Owners Should Turn Off Accelerated Charging
The main reason users are looking for a way to turn off fast charging on shaomi lies in the chemistry of lithium-ion batteries. High currents inevitably lead to heating of the batteries, which accelerates the degradation of the electrolyte and reduces the overall battery capacity over time. If you plan to use a smartphone for 3-4 years, a gentle charging mode can be a salvation.
In addition, many users are faced with the problem of “phantom” screen switching on or touchscreen failures during charging, this is due to tips created by powerful power supplies, disabling accelerated mode often solves the problem of rattling contacts and makes the device more comfortable.
⚠️ Warning: Completely shutting down fast charging will increase battery filling time with 40 minute 2-3 Keep this in mind when planning your smartphone usage schedule.
Also worth noting is the effect on overnight charging: Leaving your phone on 120-watt charging all night means stressing it for a long time, even if the power controller is working correctly. Reducing power to a standard 10-18 watts makes the process smoother and safer for battery chemistry.
Standard settings MIUI and HyperOS
The first place to look is the standard operating system settings menu, and in the latest versions of Xiaomi’s shells, the company has implemented a charging optimization feature that, while not completely shutting down fast current, adjusts it depending on use cases.
To access the basic settings, go to Settings → Battery → Battery Protection. You can activate Optimized Night Charging here. The system learns your habits and pauses charging at 80%, only completing the process before you wake up, which reduces the battery time under high voltage.
In some regions and on certain models (especially global versions), you will find an Accelerated Charging switch directly in the battery menu, and if you find one, turning it off will force the input current to be limited to standard USB (5V/2A).
- 🔋 Adaptive charging: AI analyzes sleep schedule and slows down the process at night.
- 🌡️ Temperature control: The system will slow down if sensors detect overheating.
- 📉 Charge limit: Some models can set a charge limit to 80% or 90%.
However, if standard methods do not remove fast charging, then the manufacturer “entered” this function at the firmware level without the possibility of user control through the usual interface, in which case you will have to resort to more advanced methods.
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Standard MIUI settings are more likely to offer process optimization than a complete physical shutdown of fast charging protocols.
Using the CIT Engineering Menu to Disable Functions
The CIT (Customer Integration Test) is a powerful diagnostic tool hidden from ordinary users, and this is often where the switches that control hardware functions, including charging protocols, are located, accessed through a special code in the ringer.
Dial ##6484## or ##3646633##. If the code fits, the test list will open. You need to find the section related to battery or charging. Depending on the processor model (MediaTek or Snapdragon), the tab names may vary.
The MediaTek menu often features the MTKSettings → Charging Test path. There may be the option to disable Quick Charge or switch USB mode. On Snapdragon processors, the desired settings may be located in the Single Item Test → Battery & Charging section.
☑️ Checking before entering CIT
Be very careful: changing the parameters in the engineering menu can lead to incorrect operation of the power controller. If you are not sure about the value of the parameter, it is better not to change it.
⚠️ Attention: Entering the engineering menu and changing the settings may void the warranty. Take screenshots of the initial values before any edit. ADB-The most flexible way to manage the system is to use a debugging bridge ADB (Android Debug Bridge. This method allows you to send commands directly to the operating system without going through the GUI, USB-Xiaomi cable and installed drivers. First, activate developer mode. Go to Settings → About the phone and seven times click on the version MIUI. Then in the advanced settings, turn on “Debugging by” USB». Connect your smartphone to your PC and enter adb devices in the command line to confirm the connection. To turn off fast charging, you can try the commands that control the controller logic. For example, a command to reset settings USB Changes to port mode: adb shell settings put global charger_suspend_mode 1 Or more specific commands to disable protocols QC (Quick Charge): adb shell setprop persist.sys.qc.qc3_enabled 0 The effectiveness of these commands depends on the version of Android and the specific model of the processor. On new versions of HyperOS, access to these properties (properties of the system) may be closed. ADB-The teams just don't work, but they don't do any harm. ADB Make sure that the smartphone screen has a window requesting debugging permission. You must click "Always allow" and confirm the action. Also check if the Xiaomi driver is installed. USB Driver on a computer. Comparison of methods for limiting charging power The choice of method depends on your technical skills and device model. Below is a table that will help you compare the effectiveness of different ways to disable accelerated charging on Xiaomi devices. MIUI Low Partial (Optimization) Minimum Engineering Menu (CIT) Average High Average (Failure of Software) ADB-High Depends on the model High (with errors) Third-party applications Low (imitation) Advertising, access to data As you can see from the table, regular means safest, but give only partial effect. ADB It's a real protocol shutdown, but it requires caution. Play Market apps are often just about the process, they don't have the system rights to block it. It's important to understand that the physical limit of current is only possible at the level of the power controller. Software crutches can only ask the controller to operate in gentle mode, but if the power supply and cable maintain high current, the phone may try to take it, ignoring software prohibitions. The easiest and safest way to remove fast charging without digging into system files is to use incompatible accessories. 3.0/4.0, Power Delivery requires a handshake between the phone and the power supply.If you use an old power supply with an output 5V/1A or 5V/2Oh, the phone won't be able to physically turn on fast charging even if it wants to, and the same goes for cables: thin or damaged cables have high resistance, which prevents high current from being transmitted without a critical voltage drop. 🔌 Power supply 5V/2A: Guaranteed charging in normal mode. 🔗 Cable USB 2.0: Older cables often don’t have contacts to transmit fast charging signals. 💻 Charging from a PC: USB-The computer port usually does not provide more 0.5A or 0.9And what's perfect for slow charging is that this is often called a hardware downgrade, and it's completely free of the risks of software failure, you just change the power source to a less powerful one, and the only downside is that you have to have a separate, slow power supply at hand. 💡Use a power bank with standard support only USB (without QC/PD), If you want to charge your phone slowly on the road without setting the smartphone itself, the effect of temperature and operating conditions, don't forget that the Android system and Xiaomi controllers have built-in protection mechanisms. 40-45°C), fast charging turns off automatically. This happens regardless of your settings. So if you want to reduce heat, try removing the case while charging or putting the phone on a cool surface (stone, metal), sometimes just flip the smartphone down to improve heat sink, and the system will reset the amperage. In summer or in hot rooms, the battery algorithms become more aggressive, the phone can hang 80 percent or charge very slowly, and this is normal behavior to prevent the battery from bloating. ⚠️ Warning: Do not put a charging smartphone under your pillow or on soft tissue.This creates a greenhouse effect and can lead to critical overheating, even if fast charging is turned off. Frequently asked questions (FAQ) Is it safe to turn off fast charging completely on Xiaomi? Yes, it is absolutely safe for the device. You just limit the input current, which is even useful for a longevity battery. The only risk is a software failure when you change the settings in the engineering menu if you do something wrong. Why does the phone still write "Fast Charging" after you turn off? This may be because the power supply and the phone have "handshake" again when you reconnect. Also, some cables have chips that force the protocol to activate. Try replacing the cable with a simpler one, without additional contacts. Will the fast charging settings reset after you upgrade MIUI? There is a high probability that yes. You can recharge the systems, you can only recharge them once you have to recharge them, you have to recharge them, and then you have to recharge them from the large-level systems, you have to recharge them, you have to recharge them. It doesn't depend on the applications running. However, background applications can heat the processor, which indirectly affects the charging speed due to the thermal protection. Which current is considered safe for overnight charging? The optimal current for long-term night charging is 1A (5 W) or a maximum of 2A (10 W), at which values the heating is minimal, and the chemical processes in the battery are most stable.