How to turn off turbocharging on Xiaomi Redmi Note 12: 3 proven ways

Xiaomi Redmi Note 12 is equipped with fast charging technology (up to 33 watts depending on the modification), which allows you to restore battery power in minutes. However, this feature has the downside: intense battery heating, accelerated wear of the batteries and potential risks to the durability of the device. If you notice that the phone is very warm during charging or want to extend the battery life, turning off turbocharging may be a smart solution.

In this article, we will discuss the three official ways to deactivate fast charging on the Redmi Note 12 (including the Pro, Pro+ and 4G models), and the consequences of this step, learn how to temporarily or permanently limit charging power, what settings are responsible for this feature, and what to do if standard methods do not work. Importantly, all instructions are based on the latest version of MIUI 14/15 firmware and are relevant for devices with the original Xiaomi charging unit.

Why you should turn off turbocharging on the Redmi Note 12

Fast Charging technology has become the standard for modern smartphones, but its impact on the battery is often left out of the picture. Here are the key reasons Redmi Note 12 users are choosing to abandon turbocharging:

• 🔥 Overheating of the device: when charging at high power (20-33 W), the body temperature can exceed 40-45°C, which adversely affects the processor and battery.
• 📉 Accelerated battery degradation: Lithium polymer batteries lose up to 20–30% of capacity in 2-3 years with regular fast charging (Battery University research).
• ⚡ Unstable power: In regions with frequent voltage surges, turbocharging can cause charging controller failures.
• 🛌 Night charging: Leaving your phone on charge all night with fast charging on reduces battery life.

Xiaomi says its Mi Turbo Charge technology is safe with multi-stage protection, but independent tests show that even with protection, the battery wears out faster at high currents. For example, after 500 full charging cycles at maximum power, the battery capacity can decrease to 70-75% of the original.

⚠️ Note: If you use non-original chargers or cables, the risk of overheating and battery damage increases in the future. 3–5 Before turning off turbocharging, make sure your power supply is Xiaomi certified or supports Quick Charge. 3.0/4.0.

Method 1: Disconnect via MIUI settings (official method)

The easiest and safest way to limit charging power is to use the built-in MIUI settings. This method works on all Redmi Note 12 modifications (including Pro and 4G) and does not require superuser rights (root).

1. Open the Settings app (cog icon).
2. Go to the Battery and Performance section.
3. Select Charging (or Charging Settings in some firmware versions).
4. Activate the option to Limit Charging or Turn Off Fast Charging (the name may vary).
5. Confirm the action by pressing OK in the dialog box.

After that, the smartphone will be charged at standard power (5-10 W), which will increase the charging time to 2-3 hours, but reduce the load on the battery. In some versions of the MIUI, instead of completely shutting down, there is a manual power limit (for example, up to 18 W).

Check out the MIUI version (Actual for 14/15)

Use the original cable and power supply

Charging should be connected to the phone

Don't interrupt the setup process-->

If the option to turn off fast charging is not on the menu, this can mean:

• 📱 You have custom firmware installed (unofficial version) MIUI).
• 🔌 A non-original charger is used.
• 🔄 System update required (check in Settings) → The phone. → Updating the system).

Method 2: Use of the Battery Savings mode

If your MIUI version does not have a direct option to turn off turbocharging, you can use a hidden saving mode that automatically limits the charging power, a method suitable for users who want to temporarily reduce battery load (for example, overnight).

Algorithm of action:

1. Open Settings → Battery and Performance.
2. Select Battery Modes.
3. Activate the option of charge saving or Super saving (depending on the firmware version).
4. Connect the charger – the system will automatically reduce the charging current to 5-7 W.

The advantage of this method is that you do not need to manually shut down after each charge, but note that in saving mode, processor performance is also limited and background processes are turned off, which can interfere with the operation of some applications.

⚠️ Attention: In some firmware MIUI Redmi Note 12 (especially on the Global Note) ROM) Saving charge can block notifications and background sync. Before activating, check if you are using applications that require a constant Internet connection (for example, messengers or health trackers).

Method 3: Disconnect via the engineering menu (for power users)

If standard methods fail, you can use the Engineering Mode, which provides advanced charging settings, which requires caution, as incorrect changes can cause the device to malfunction.

Step-by-step:

1. Open the phone app and enter the combination: ##4636##
2. In the menu that opens, select Battery Information.
3. Scroll down and find the Fast Charge Config (or similar).
4. Change the value from Enabled to Disabled.
5. Save the settings and restart the device.

If Fast Charge Config is missing, try an alternative code to access the charging menu:

##2846579## → ProjectMenu → Battery Test → Fast Charge

Important: changes to the engineering menu are not saved after resetting or updating the firmware. After the MIUI update, you will have to repeat the procedure again.

What to do if the turbocharger does not turn off

Sometimes users are faced with a situation where fast charging remains active despite all the manipulations.

• 🔌 Non-original charger: Even if you turned off turbocharging in the settings, some power units (especially from Samsung or OnePlus) can force fast charging.Solution: only use the original Xiaomi adapter.
• 📲 Firmware failure: after update MIUI Solution: Reset settings through Settings → System system → Resetting settings → Reset all settings (without deleting data).
• 🔋 Damaged Charging Controller: If the phone is always charging at maximum power regardless of settings, it could indicate a hardware malfunction.Solution: contact Xiaomi Service Center.

If the problem persists, check the battery status through the AccuBattery app (available on Google Play), which will show the actual charging speed and battery temperature.

• Temperature: 25-35 ° C (when charging up to 40 ° C is permissible).
• Charging current: 1000-1500 mA for standard charging, 3000-4000 mA for fast charging.

💡

If you charge your phone frequently at work or in public, use a power bank with a power output of 5–10 watts. This will automatically turn off turbocharging, as external batteries rarely support high currents.

Consequences of turning off turbocharging: pros and cons

The decision to disable fast charging on the Redmi Note 12 has both advantages and disadvantages. Let's take a closer look at them so you can make an informed decision.

Advantages

• ✅ Extending battery life: When charged 5–10W, the battery will last 20–30% longer, according to Battery University).
• ✅ Reduced heating: the temperature of the case during charging does not exceed 30-35°C, which reduces the risk of processor overheating.
• ✅ Safety: Lower current reduces the likelihood of voltage surges, especially in regions with unstable grids.

Deficiencies

• ❌ Increased charging time: a full cycle can take up to 3-4 hours (versus 40-60 minutes with turbocharge).
• ❌ Traveling Discomfort: If you’re used to recovering charge quickly, standard charging may seem too slow.
• ❌ Potential failures: on some firmware, a fast charging shutdown can cause errors in the charging controller (for example, the phone stops recognizing the original adapter).

The best trade-off is to use fast charging only when needed (for example, when you need to urgently restore charge before leaving), and the rest of the time to charge the phone at standard power. It is also recommended to avoid charging to 100% - the optimal range for lithium polymer batteries: 20-80%.

💡

Turning off turbocharging is most effective in the first 1-2 years of smartphone use, when the battery has not yet degraded. If the battery is already worn out (capacity below 70%), limiting the charging power will give less effect.

FAQ: Frequent questions about disabling turbocharging