How to turn off fast charging on Xiaomi Redmi Note 8T: 5 proven ways

The fast charging feature in Xiaomi Redmi Note 8T smartphones allows you to restore battery power in minutes, but this convenience has the downside. Constant use of accelerated charging can lead to overheating of the battery, reducing its life and even unstable operation of the device, especially for models released 3-4 years ago, where the battery has already begun to degrade.

In this article, you will find 5 working ways to turn off fast charging on the Redmi Note 8T, from standard settings to hidden features of the engineering menu. We will also discuss when it is really necessary and when to leave the function on. If you notice that the phone is warming heavily while charging or the battery has become too fast, these methods will help to extend the life of your device.

Important: All instructions are checked on current versions of MIUI (including MIUI 14 and MIUI 12.5 Enhanced).If your Redmi Note 8T runs on custom firmware, some menu items may differ.

Why you should turn off fast charging on the Redmi Note 8T

Smartphone manufacturers, including Xiaomi, often position fast charging as an unambiguous plus, but in practice, this feature has several hidden disadvantages that become noticeable after 1-2 years of operation:

🔋 Battery degradation: Lithium-ion batteries in smartphones are designed to be 300-500 Fast charging increases the load on the cells, reducing this value by 20-30%. For the Redmi Note 8T battery-capacitated 4000 This means that through the 2 The actual capacity of the year may fall to 70-75% primordial.

🔥 Overheating of the device. When accelerated charging, the body temperature can rise to 40-45°C, which affects not only the battery, but also the processor, the camera module and other components, and is especially dangerous if you are simultaneously charging your phone and playing heavy games or shooting videos in the video. 4K.

⚡ Instable voltage: In cheap chargers (or unoriginal cables), fast charging can cause current surges, leading to sudden reboots or even damage to the power controller. This is one of the reasons why Xiaomi recommends using only branded accessories.

📉 Decrease in productivity. Heating above 40.°C automatically starts trottling, which can cause the phone to slow down even in simple tasks, especially in models with the Snapdragon 665 processor, which is installed in the Redmi Note. 8T.

If you notice any of these symptoms, consider turning off fast charging, but there is a downside: without it, the full charge time will increase from 1.5-2 hours to 3-4 hours.

Method 1: Disconnect via standard MIUI settings

The easiest and safest method is to use the built-in MIUI options. Unfortunately, in the latest firmware versions, Xiaomi has removed the direct ability to disable fast charging, but the workaround still works.

📌 Instructions:

1. Open the Settings app (cog icon).
2. Go to Battery and Performance (or Battery in older versions of MIUI).
3. Slip on "Battery settings."
4. Find the option “Fast Charging” (could be called “Accelerated Charge” or “Quick Charge”).
5. Move the slider to the "off" position.

⚠️ Note: On some versions MIUI 13/14 This item may not be there, so try an alternative route:

Settings → Additional → Special features → Optimization of charging

You can turn on the Slow Charging mode, which limits the current to 1A (standard USB 2.0).

If none of the options worked, move on to the next one.

Method 2: Use of an engineering menu (for power users)

If the standard settings do not allow you to turn off fast charging, you can use the engineering menu (#4636##), which requires caution, as improper actions can lead to malfunctions in the phone.

🔧 Step-by-step instruction:

1. Open the Phone app and enter the code ##4636##.
2. In the menu that appears, select “Battery Information”.
3. Scroll down and find the line “Fast Charge” (or “Fast Charge”).
4. Slip it and select “Disable”.
5. Reboot your phone to make the changes take effect.

⚠️ Note: In some firmware, the engineering menu may be blocked. If nothing happens after you enter the code, your operator or manufacturer has disabled access to these settings.

💡 If the engineering menu is open but there is no quick charge item, try another code:

##2846579## → ProjectMenu → Background Settings → USB Port Settings

Here you can manually limit the charging current, but it requires knowledge of technical parameters.

Method 3: Applications for charging control (without root)

If you don't want to go through the settings, you can use third-party utilities, which don't shut down fast charging completely, but they limit the current, thereby reducing the battery load.

📱 Top.-3 apps for Redmi Note 8T:

📌 How to set up AccuBattery:

1. Install the app from Google Play.
2. Open the Charging section and activate the Charge Limit option.
3. Set a maximum level of, for example, 80% (this is the optimal balance between the time of operation and the safety of the battery).
4. Enable notifications to receive a signal when you reach the limit.

⚠️ Note: Apps without root rights can’t completely disable fast charging, but they effectively reduce its negative impact. Full control will require unlocking the bootloader and installing a custom core, which is not recommended for inexperienced users.

Method 4: Disconnect via ADB (for advanced users)

If previous methods have failed, you can use Android Debug Bridge (ADB), which requires connecting your phone to your computer, but gives you more options for fine-tuning.

🖥️ Instructions for disabling fast charging through ADB:

command-line

adb devices

Wait for the serial number of your device to appear.

adb shell settings put global battery_charge_limit 1

(where 1 is the limit to standard charging, 0 is the inclusion of fast charging).

Reboot the phone.

🔹 Additional commands for charging control:

⚠️ Attention: Misuse of the right ADB It can cause data loss or soft-brick, and if you're not sure what you're doing, you better turn to other methods.

💡

Before working with ADB, back up your data via Mi Cloud or locally on your PC. Go to Settings → System → Backup and select “Create a Backup”.

Method 5: Hardware shutdown (for emergency cases)

If software methods do not help, and fast charging causes serious inconvenience (for example, the phone turns off when connecting to charging or heats up a lot), you can resort to a hardware solution.

🔧 Options for hardware shutdown:

• 🔌 Using non-original cable/ROM. Fast charging only works with supported accessories. USB-cable (for example, from Nokia or Samsung) 2010-x) the current will be automatically limited to 0.5-1And.

⚠️ Attention: Using uncertified chargers can be dangerous! Cheap Chinese RAMs often don't have short circuit protection, which can cause fire or damage to your phone.If you decide to go this route, opt for certified accessories USB-IF Qualcomm Quick Charge.

🔹 How to check charging current:

1. Install the Ampere app from Google Play.
2. Connect the phone to the charger.
3. Launch the application - it will show the current current in mA (milliampers).
4. If the value exceeds 1000 mA, fast charging is still active.

💡

Hardware methods are a last resort, and before using them, be sure to try the software methods (settings, ADB, engineering menus), as they are safer and do not require interference with iron.

What do you do if nothing helps?

If you’ve tried all of these, but the fast charging on the Redmi Note 8T is still active, there may be a deeper problem.

🔍 Diagnostics of the problem:

• 📱 Check the version. MIUI. On some firmware (especially global ones), the option to turn off fast charging is blocked (EEA) Chinese MIUI.
• 🔄 Reset to factory settings. Sometimes system conflicts interfere with the function. Backup before reset! Pathway: Settings → Additionally. → Recovery and discharge → Resetting settings.
• 🛠️ Update the firmware. MIUI Additional charging management options may appear. Check the updates in Settings → The phone. → Updating the system.
• 🔋 Check the battery for wear and tear. If the battery is already tired (capacity below 60%), the power controller can ignore the limitations. You can find out the real capacity through AccuBattery or the engineering menu.

💬 If nothing works, there are two options:

1. Contact the Xiaomi service center with a request to disable fast charging at the software level (sometimes this is done through special software).
2. Purchase an external power bank with support for slow charging and use it instead of the original RAM.

📌 Last tip: If your Redmi Note 8T It's not guaranteed, we can consider replacing the battery. 1000-1500 ₽, And it's not going to take much longer to install. 30 Not only will it solve the problem of fast charging, but it will also restore the phone to its original autonomy.

FAQ: Frequent questions about fast charging on the Redmi Note 8T