How to turn off fast charging on Xiaomi Poco M3: all ways

Xiaomi Poco M3 is a popular smartphone with a powerful 6,000mAh battery, but even it is not immune to battery wear when using fast charging. Many users want to turn off this feature to extend the life of the device or avoid overheating. In this article, we will discuss all the working ways to turn off fast charging on the Poco M3, including hidden MIUI settings and engineering menus.

It's important to understand that Quick Charge 3.0 in the Poco M3 is implemented at the firmware and hardware controller level. Simple shutdown in the settings is not always available, it depends on the version of MIUI and regional firmware. We tested the methods on MIUI 12.5-14 and prepared the current instructions.

Why users are turning off fast charging on the Poco M3

The main reasons for not fast charging are related to battery durability and heat generation. Lithium polymer batteries degrade faster when:

• 🔥 High temperatures (above 30)°C accelerates wear by 20–30% per year).
• ⚡ Constant cycles of fast charging/discharge (reduces life by 15–25%).
• 📉 Charging up to 100% (optimal level for durability – 80%).

Poco M3 owners also complain about:

• 🔌 Overheating of the body during charging (especially during games).
• 💥 Battery bloating after 1.5–2 years of heavy use.
• ⏳ Capacity reduction to 70-75% in 18 months (with active fast charging).

Xiaomi says the Poco M3 uses overheating protection, but practice shows that when charging with 18W+, the battery temperature can reach 40–45°C, which is critical for durability.

• 📅 Extend battery life by 30-50%.
• ❄️ Reduce the heating of the body during charging.
• 🔋 Keep the battery closer to nominal for longer.

Method 1: Disconnect via standard MIUI settings

The easiest method is to use built-in MIUI options, but it doesn't work on all firmware versions. Check your Poco M3:

1. Open Settings → Battery and Performance.
2. Select Charging (or Charging Settings in new versions).
3. Find the option of Quick Charge or Quick Charge.
4. Switch the slider to the off position.

If you don't have Fast Charging, your firmware doesn't support this menu, so move on to the following.

⚠️ Note: On some firmware, the fast charging switch through settings only works until the device is restarted.

Method 2: Use the engineering menu (code ##4636##)

The Engineering Mode allows you to manage hidden charging options, which works on most versions of MIUI, but requires caution:

1. Open the Phone app.
2. Enter the combination: ##4636###.
3. In the menu that appears, select Battery Information.
4. Find the AC Charge or Fast Charge string.
5. Click on it and select Disable.

If the Fast Charge string is missing, try an alternative path:

1. In the engineering menu, go to Hardware Testing.
2. Choose Charging.
3. Turn off the Fast Charging option (if available).

Record the current battery settings (screenshot)

Close all background applications

Connect the charger (for verification)

Do not interrupt the process of changing parameters.-->

⚠️ Attention: Some of the options in the engineering menu can disrupt the stability of the smartphone. Do not change other settings if you are not sure about their purpose. For example, changing the settings of Voltage or Current without knowledge can lead to a failure of the power controller.

After turning off fast charging via the engineering menu:

• 🔄 Restart the device (some changes only apply after rebooting).
• ⚡ Check the charging speed with the AccuBattery or Ampere app.
• 📊 Compare the full charge time before and after the shutdown (should increase with the ~2 hours before ~3.5-4 hours).

Method 3: Disconnect via ADB (for power users)

If standard methods don’t work, you can use Android Debug Bridge (ADB), which requires a computer and basic command line skills.

Step-by-step:

1. Download and install ADB Tools on PC.
2. On Poco M3, activate Developer Mode: Go to Settings → About Phone. Tap 7 times on MIUI Version.

USB debugging

Settings → Additional → For Developers

Connect your smartphone to your PC and confirm the debugging permission.

Open the command line (Windows) or terminal (macOS/Linux) and type:

adb shell settings put global fast_charge 0

To check the current state, use:

adb shell settings get global fast_charge

If the command returns 0, fast charging is disabled. 1 means the function is active.

💡

Before using ADB, back up your data via Settings → System → Backup. In rare cases, incorrect commands can cause firmware to crash.

Limitations of the method:

• 🔒 Requires unlocked bootloader on some firmware.
• 🔄 After updating MIUI settings may reset.
• 🛠️ It does not work on custom firmware without support fast_charge.

Method 4: Using third-party applications (without root)

If you don't want to mess with ADB Or engineering menus, you can try specialized utilities. M3:

AccuBattery is the safest solution, and it doesn't shut down fast charging completely, but it allows you to:

• 📉 Limit the charge to 80% (optimum for battery life).
• 📊 Tracking the charging speed in real time.
• 🔋 Receive notifications of reaching a given level.

Quick Charge Disabler is suitable for completely disabling fast charging without root, but its effectiveness depends on the firmware. On MIUI 14, the application may not work due to system limitations.

What to do if nothing works: Radical methods

If all of the above methods fail, there are more radical options: they require unlocking the bootloader or root rights, which voids the warranty and can lead to unstable operation of the device.

Method 1: Editing the build.prop file

1. Get root rights (for example, through Magisk).
2. Install a file manager with root support (such as Root Explorer).
3. Open the file /system/build.prop.
4. Add a line:

persist.sys.qc30=false

or

ro.miui.fastcharge=false

1. Save the changes and restart the device.

Method 2: Installation of a custom core

Some custom cores (e.g., FrancoKernel or ElementalX) allow you to flexibly adjust charging options.

1. Unlock the bootloader through the Mi Unlock Tool.
2. Install Custom Recovery (TWRP)
3. Sweat a compatible core with support for charging management.
4. Configure the settings through the kernel application (e.g. EX Kernel Manager).

⚠️ Note: Editing system files or installing custom cores can lead to a device blink (completely inoperable). TWRP Check out the kernel compatibility reviews with your Poco model. M3.

How to check if fast charging is actually off

Turning off fast charging is only half the battle, and you have to make sure that the changes are in place.

Method 1: Use of the Ampere application

1. Download Ampere from Google Play.
2. Connect the original charger.
3. Launch the app and look at the value of CHARGE:

• 🔌 Fast charging: 1500–2000 mA.
• ⚡ Standard charging: 500–1000 mA.

Method 2: Full charge time

Take charge time from 1% to 100%:

• 🔥 With fast charging: ~2 hours.
• ❄️ No quick charge: ~3.5-to-4.5 hours.

Method 3: Body temperature

Use the CPU Monitor app or the built-in temperature sensor in MIUI:

• 🌡️ With fast charging, the battery temperature rises to 38-45°C.
• ❄️ With standard charging - no higher than 30-35°C.

1. whether you are using the original charger (low-quality RAMs may ignore the limitations).

2. whether the function "Adaptive Charging" is activated in the MIUI settings.

3. Have the settings reset after the firmware update.-->

FAQ: Frequent questions about turning off fast charging on Poco M3