Disabling fast charging on Xiaomi Poco X3: 3 proven ways

Why do users want to turn off fast charging on the Poco X3?

Xiaomi Poco X3 is equipped with Quick Charge 3.0 fast charging technology, which allows you to restore 60% of the battery capacity in 30-40 minutes, but not all owners want to use this feature, the main reasons are the desire to extend battery life, reduce the heating of the device during charging or avoid overload when using non-original adapters.

The manufacturer claims that modern lithium-polymer batteries are designed for hundreds of cycles of fast charging, but practice shows that with intensive use, the battery temperature of the Poco X3 can exceed 40 ° C, which accelerates the degradation of the elements by 15-20% faster than with standard charging 5W. In addition, not all cables and power supplies support high currents, which creates a risk of overheating or even short circuit.

In this article, you will find three working methods for turning off fast charging, from standard settings to hidden options in the engineering menu, and how to check if the function is deactivated, and what alternatives exist to treat the battery with care.

Method 1: Disconnect via Xiaomi’s standard settings

The easiest and safest method is to use the built-in MIUI options. It doesn't require superuser rights or special knowledge, but it doesn't work on all firmware versions.

Open the Settings app (cog icon).
Go to the Battery and Performance section.
Select Battery Settings → Charging Mode.
Activate the option Standard Charging (or Normal Charging depending on the MIUI version).

If there is no Charging Mode, then your firmware version does not support this function through the GUI, in which case move on to the following methods.

MIUI version (relevant to MIUI 12.5+)

- Availability of the "Charging Mode" item in the settings

Is the original Xiaomi cable connected?

- Battery temperature (not higher than 35)°C)-->

⚠️ Note: Some custom firmware (e.g. Pixel Experience or LineageOS) may not have this item even if the original software is available. In this case, use the engineering menu (mode 2).

If standard settings don’t work, you can use Xiaomi’s hidden engineering menu, which requires caution, as improper actions can disrupt the charging module.

Open the phone app and enter the combination: ##4636##
In the menu that opens, select Battery Information.
Scroll down to the USB charging section (could be called Fast charging).
Click on the line and select Disable in the window that appears.
Reboot your smartphone to apply the changes.

After rebooting, check the charging speed with the AccuBattery app (available on Google Play). If the current has dropped to 1.0-1.5A instead of the usual 2.5-3.0A, then fast charging has been disabled successfully.

What to do if the engineering menu is not opened?

If nothing happens after entering the code ##4636##, then 1. Your firmware blocks access to the engineering menu (relevant to the Chinese versions). MIUI). 2. Installed software from a third-party manufacturer (e.g. ColorOS on Poco clones) X3). 3. Developer mode is turned on, but test features are disabled, and then the third option is to use it. ADB-Teams (see next section).

Parameter	Fast charging (incl.)	Standard charging (off)
Charging current (A)	2.5–3.0	1.0–1.5
Voltage (V)	9–12	5
Battery temperature (°C)	38–45	30–35
Full charge time (min)	60–70	120–150

Method 3: Disconnect via ADB (for advanced)

If the first two methods didn't work, there's an option that uses Android Debug Bridge (ADB), which is a universal tool for controlling a smartphone through a computer, but it requires you to turn on the developer mode and install drivers.

Turn on Developer Mode: Go to Settings → About Phone. Click 7 times on the MIUI Version bar until the notification "You've become a developer" appears.

USB debugging

Settings → Additional → For Developers

Poco X3

ADB Tools

adb.exe

adb shell settings put global fast_charge 0

Reset the device.

To get fast charging back, use the same command, replacing 0 with 1. This method works on 90% of firmware, including custom ones, but requires caution: wrong ones. ADB-Teams can cause system failures.

💡

Before using ADB, back up your data via Settings → System → Backup. This will protect your files in the event of a crash.

How to check that fast charging is actually turned off?

It's not enough to just follow the instructions, you have to make sure that the changes are in effect.

📊 AccuBattery: Shows the current charging current in real time. When fast charging is turned off, the value should not exceed 1.5A.
⚡ Display power unit: Connect your smartphone to a digital screen charger (e.g. Baseus) 65W). The display shall show current. 5V/1A.
⏱️ Charging time: Full charging from 0 to 100% should take at least 2 hours (with fast charging – about 1 hour).

If after turning off fast charging, the smartphone still warms up or charges too quickly, check:

Whether you use the original cable and adapter (non-original ones may ignore the limitations).
Is Adaptive Charging enabled in the battery settings (it can automatically increase current).
Are there third-party charging management apps (such as Battery Guru) that may conflict with settings?

Yes, to extend the life of the battery.|Yeah, because of the overheating.|No, I need speed.|I tried it, but I went back to fast charging.|I don't know how to do that.-->

What do you do if nothing works?

If none of these methods worked, your firmware may have hard-stitched charging settings (relevant to some regional versions of the Poco X3), leaving a radical set of measures:

Install custom firmware (such as ArrowOS or HavocOS), where charging settings are flexibly configured through the kernel.
Use of a magnetic current limiter, a special adapter that physically limits power (sold on AliExpress).
Replace the charging controller in the service center (an extreme case, as it requires disassembly of the device).

Before using these methods, assess the risks:

Castom firmware can deprive warranties and contain bugs.
Magnetic limiters sometimes cause unstable work USB-port.
Replacing the hardware components voids Xiaomi’s warranty.

⚠️ Attention: On some Poco X3 firmware for the Indian market (MIUI INDIA) Turning off fast charging can cause the error "Charging paused. Voltage too high." In this case, only resetting to factory settings or flashing will help.

Alternative ways to charge Poco X3

If you can’t turn off fast charging or don’t want to take risks, use these tips to extend the battery life:

🔋 Charge up to 80%: Use Optimized Charging in the battery settings to limit the maximum charge level.
🌡️ Avoid extreme temperatures: Do not charge your smartphone at temperatures below 0°C or higher than 40°C. Use heat sink covers.
🔌 Turn off overnight charging: Long stays 100% battery life shortened.Use smart sockets with timer.
📵 Do not play while charging: Simultaneous charging and high load (games, video editing) increase the battery temperature by 20-30%.

And you also have to pay attention to the quality of the accessories, because cheap cables and adapters not only ignore fast charging protocols, but they can also damage the power controller. X3:

The original adapter Xiaomi 33W (article MDY-11-ED).
USB-C to USB-C cable with USB-IF certification (e.g. Anker PowerLine+).
Powerbank with PD 18W support (e.g. Xiaomi Mi Power Bank 3 Pro).

💡

Even when fast charging is off, use quality accessories. Cheap cables can bypass restrictions and deliver high current, negating all efforts.

FAQ: Frequent questions about turning off fast charging

Can I turn off fast charging only during night charging?

Yes, you can use MacroDroid or Tasker to automatically turn on/off schedule charging, for example: Create a macro with the condition "Time: 23:00–7:00". Add the "Follow" action ADB-"Settings put global" fast_charge 0. Set the reverse action to 7:00 With settings put global fast_charge 1. This will allow you to use fast charging during the day and standard - at night.

Why does the smartphone still warm up after switching off fast charging?

There may be several reasons: Background processes (such as app updates or synchronization) put a strain on the processor. Battery is faulty - check its health in AccuBattery (Health section). Charger is putting unstable voltage (try another adapter). Dust or dirt in the connector USB-C They make contact worse, which leads to heat. Clean the connector with a wooden toothpick and try charging your smartphone in Safe Mode (hold the power button). → Safe regime).

Does the fast charging shutdown affect Xiaomi’s warranty?

Not if you used standard settings or engineering menus. These methods do not require root rights and leave no trace of interference with the system. However: Using ADB or custom firmware may void the warranty if the service center detects changes. If you have power problems after switching off fast charging, return the settings to factory before contacting the service. Xiaomi official position: modification of the software (including ADB) is considered a violation of the warranty conditions.

Can I turn off fast charging on the Poco X3 Pro?

Yes, the instructions in this article are also suitable for the Poco X3 Pro, since both devices use similar charging controllers (Qualcomm PM6150).However, note: In the Poco X3 Pro, fast charging is implemented at the firmware level, so after the MIUI update, the settings can be reset. The maximum charging current of the X3 Pro is higher (3.5A vs. 3.0A in the X3), so the effect of the shutdown will be more noticeable.

How do I get my fast charge back if I change my mind?

You can restore fast charging in the same ways: → Battery → Charging mode (select Fast Charging) in the Engineering menu: ##4636## → Battery information → Fast charging → Enable, through ADB: adb shell settings put global fast_charge 1 After that, restart the device and check the charging current in AccuBattery.