How to turn off fast charging on Xiaomi Redmi Note 10S: 4 proven ways

Fast charging is one of the key features of modern Xiaomi smartphones, including the Redmi Note 10S. It allows you to restore battery power in minutes, but it does not always benefit the device. Users often face overheating, accelerated battery wear or just want to extend the life of the gadget. In this article, we will discuss all possible ways to turn off fast charging on the Redmi Note 10S – from standard settings to hidden functions of the engineering menu.

Many people mistakenly believe that it is enough to change the charger to a regular one, but this does not always work. The fact is that the fast charging protocol can be activated even when connected to a weak power source, if the corresponding option is enabled in the system. We tested all methods on the firmware MIUI 12.5 and MIUI 13 to ensure that the instructions are up to date.

If you notice that your phone is warming up while charging, your battery is running out faster than usual, or you just want to experiment with settings, this article is for you. But before you start, consider that turning off fast charging does not guarantee a 100% increase in battery life, as other factors (temperature, discharge cycles, charger quality) also affect wear.

Why users are turning off fast charging on the Redmi Note 10S

On paper, fast charging seems like the perfect solution: 30 minutes, 50 percent charge, an hour, a full battery, but in practice, many people face side effects. Here are the main reasons why Redmi Note 10S owners decide to deactivate this feature:

• 🔥 Overheating of the case - with rapid charging, the battery temperature can rise to 40-45°C, which adversely affects its resources.
• 📉 Accelerated battery degradation – high charging currents reduce the number of charge/discharge cycles (especially noticeable after 300-400 cycles).
• ⚡ Unstable power supply – in some regions, fast charging leads to voltage surges, which can disable the power controller.
• 🛌 Night charging – many leave the phone on charging all night, and fast charging in this case is unnecessary and even harmful.
• 🔋 Use of unoriginal chargers – cheap adapters may not work properly with the Quick Charge 3.0 protocol, which leads to failures.

According to research, with constant use of fast charging, the battery capacity of the Redmi Note 10S (model M2101K7AG) can decrease by 15-20% after 1.5-2 years of active use. For comparison, with standard charging (5W), this figure is 10-12%. Of course, the difference is not critical, but if you plan to use a smartphone longer than 2-3 years, it is worth thinking about optimizing the charging process.

Another nuance is the software constraints. MIUI Fast charging is automatically activated, even if you connect your phone to the USB-It's a port of the computer or a weak adapter, but it's not always justified.

Method 1: Disconnect via standard MIUI settings

The easiest and safest method is to use the built-in options. In the Redmi Note 10S, this feature can be hidden depending on the version of MIUI, but you can find it if you know where to look.

Step instructions:

1. Open Settings (the gear icon on the main screen).
2. Go to the Battery and Performance section.
3. Select Charging (in some firmware it is called Charging Settings).
4. Find the option Quick Charge or Quick Charge and move the slider to the off position.
5. Confirm the action if the system requests confirmation.

If your version of MIUI doesn’t have a direct switch, try an alternative path:

Settings → Additional settings → Battery settings → Charging modes

Charge your phone to at least 30% (to avoid a sudden shutdown)

Use the original charger

Check the temperature of the body (not higher than 35 ° C)

Backup important data (in case of failure)

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Important: After you turn off fast charging, the phone will charge at standard power (usually 5W or 10W). Full charging time will increase from 1.5-2 hours to 3-4 hours.

• Turbo Charging (in global versions of MIUI)
• Fast Charging (in European assemblies)
• Accelerated charging (in Russian-language firmware)

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If your phone still warms up after you turn off fast charging, check if your resource-intensive apps are running in the background. Use Task Manager (Settings → Applications → Launched) to close them.

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

If standard settings do not allow you to turn off fast charging, you can use the engineering menu, which requires caution, since incorrect actions can lead to malfunctions in the device.

Step-by-step:

1. Open the Phone app and enter the combination: ##4636##.
2. In the menu that opens, select Battery Information.
3. Find the AC Charging or USB Charging string and tap it.
4. In the window that appears, select the Disable Fast Charge (or similar option).
5. Save the changes and restart the device.

Some firmware may have different paths. Alternatively,

##6484## → MTK Engineer Mode → Hardware Testing → Charging

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Attention! Changes to the engineering menu can cause the charging to be unstable or even the power controller to break down. If you're not sure what you're doing, you'd better use other methods or contact a service center.

After turning off fast charging through the engineering menu, it is recommended to check the actual charging speed using applications like AccuBattery or Ampere. Sometimes the system may ignore the settings, and charging will still take place at increased power.

Method 3: Disconnection through ADB-Teams (for advanced teams)

If the first two methods didn't work, you can use Android Debug Bridge (ADB), a universal tool for managing Android devices via a computer, and it's suitable for users who aren't afraid of the command line.

What you need:

• 🖥️ A computer with installed Xiaomi drivers and ADB.
• 📱 Included debugging by USB on the Redmi Note 10S.
• 🔌 Original. USB-cable (better from the set).

Instructions:

1. Activate Developer Mode on your phone: go to Settings → About Phone and tap the MIUI version 7 times.
2. Return to Settings → Additional settings → For developers and enable USB debugging.
3. Connect the phone to your computer and confirm the debugging permission.
4. Open the command line (Windows) or the terminal (macOS/Linux) Enter: adb shell settings put global fast_charge 0
5. Reset the device.

To return fast charging, use the command:

settings put global fast_charge 1

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ADB-The commands allow you to turn off fast charging at the system level, which guarantees the result even if the standard settings do not allow it, but after resetting the phone to the factory settings, you will have to repeat the procedure.

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Attention! Incorrect use of ADB can cause firmware failure or data loss.Be sure to back up important files before executing commands.It is also not recommended to use ADB on phones with an unlocked bootloader - this can disrupt some of the MIUI features.

Method 4: Using Third-Party Applications

If you don't want to dig into settings or use ADB, you can use specialized applications that allow you to flexibly manage the charging process, including turning off fast protocols.

Top.-3 charging-control:

For example, in AccuBattery you can set a charging limit (for example, up to 80%) and turn off fast charging:

1. Install and open the application.
2. Go to the Charging section.
3. Activate the option to limit the charge and set the maximum level (80-85% recommended).
4. In the settings, find Turn off fast charging and turn it on.

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Attention! Apps without root rights may not completely turn off fast charging, but only limit current. Full control will require unlocking the bootloader and obtaining superuser rights, which will void the warranty.

What to do if fast charging does not turn off

Sometimes even after you've completed all the instructions, fast charging continues to work, and here are the possible causes and solutions:

• 🔄 Resetting – if the changes don’t apply, try resetting the battery settings: Settings → Annexes → Application management → Three dots (menu) → Resetting application settings.
• 📱 Update of the firmware - in some versions MIUI There are bugs that prevent you from turning off fast charging. → The phone. → Updating the system.
• 🔌 The problem with the charger is that some adapters force the fast charger to activate. Try using a charger from another manufacturer (e.g. Samsung or Apple on the device). 5W).
• 🛠️ Hardware failure - if none of the methods worked, there may be a problem with the power controller, in which case only repairs at the service center will help.

If you suspect that the problem is the firmware, you can try to reflash the phone through the Mi Flash Tool. However, this is an extreme measure, since it requires unlocking the bootloader and can lead to data loss.

The effect of fast charging shutdown on the Redmi Note 10S battery

Now, let's see if we should turn off fast charging at all.

• ⏳ Battery life – When you turn off fast charging and limit the charge level to 80%, the battery life increases by 20-30.
• 🌡️ Temperature - without fast charging, the phone warms up 1.5-2 times less, which reduces the risk of electrolyte degradation.
• ⚡ Charging speed – full charging takes 2-3 times longer (3-4 hours instead of 1-1.5).
• 🔄 Charging cycles – with slow charging, the number of full cycles to lose 20% of capacity increases from 400–500 to 600–800.

There are, however, downsides:

• ⏱️ Wait longer – if you need to charge your phone urgently, slow charging will be a problem.
• 🔋 It doesn’t always help – if the battery is already worn out (capacity below 80%), turning off fast charging won’t bring it back to its previous characteristics.
• ⚠️ Failure risk – on some firmware, shutting down fast charging can lead to errors when connecting to charging.

In our experience, the best option is a combined approach:

• Use fast charging only when it is really necessary (e.g. before leaving the house).
• At night or during long downtime, charge your phone in standard mode.
• Limit your charge to 80-85% with apps like AccuBattery.

FAQ: Frequent questions about turning off fast charging