How to turn off fast charging on Xiaomi Redmi Note 6 Pro: all the ways and nuances

Xiaomi Redmi Note 6 Pro, released in 2018, is still popular with users due to its balanced performance and reliability. However, over time, many owners face the problem of accelerated wear of the battery, especially if they are actively using the fast charging feature. Although the manufacturer claims the safety of Quick Charge 3.0 technology, independent tests show that the constant use of accelerated charging can reduce battery life by 15-20% in 2-3 years.

In this article, we’ll look at how to turn off fast charging on the Redmi Note 6 Pro in a variety of ways, from standard settings to hidden MIUI menus. You’ll learn why it might be useful, what risks exist, and how to charge your phone to extend battery life. And we’ll also answer frequent questions: does turning off fast charging affect your smartphone’s speed, can you turn it back, and what to do if the option isn’t displayed on the menu.

Why users are turning off fast charging on the Redmi Note 6 Pro

Qualcomm’s Quick Charge technology is really handy: it charges 50 to 60 percent in 30 minutes, and it takes about 1.5 hours to complete a cycle, but there’s a downside to the coin. Here are the main reasons Redmi Note 6 Pro owners decide to give up fast charging:

• 🔋 Extending battery life: Lithium-ion batteries degrade faster at high charging currents. Shutting down Quick Charge can increase battery life by 200 to 300 cycles.
• ⚡ Overheating of the device. With fast charging, the processor and battery heat up to 40-45.°C, which adversely affects the internal components.
• 📉 Unstable operation: Some users note lags and braking during charging due to increased load on the power controller.
• 💰 The new battery for the Redmi Note 6 Pro costs 1500-2500 rubles, and its replacement in the service will cost another 1000-1500 rubles.

Also, if you use non-original chargers or low-quality cables, the risk of battery damage increases significantly.Fast charging in such conditions can lead to battery bloating or even short circuit. Xiaomi manufacturer does not recommend using third-party adapters with power above 18 watts for this model.

Method 1: Disconnect via standard MIUI settings

The easiest and safest method is to use built-in MIUI options. However, not all firmware versions have this option available. If you have a Redmi Note 6 Pro on MIUI 10-12, try the following algorithm:

1. Open the Settings app (the gear icon on the home screen).
2. Go to the Battery and Performance section.
3. Select Charging (on some versions – Charging settings).
4. Find the option Quick charging and move the slider to the position Off..

If Fast Charging is not on the menu, your version of MIUI does not support this function through the standard interface, and you will need to use alternative methods (see the following sections).

⚠️ Note: On some custom firmware (such as LineageOS or Pixel Experience), the fast charging option may be hidden or not work properly. Before changing your settings, make sure your firmware is stable.

Method 2: Use of the MIUI Hidden Settings (Hidden Settings)

If the standard method didn’t work, you can try activating hidden MIUI settings through an engineering menu, which requires caution, as improper actions can cause the phone to malfunction.

Here's the step-by-step instruction:

1. Open the Phone app and enter the combination: ##4636##.
2. In the menu that appears, select Battery Information.
3. Scroll down and find AC charge.
4. Click on it and enter a value of 500 (this will limit the charging current to 0.5A, turning off fast charging).
5. Save the changes and restart the phone.

Once rebooted, the phone will charge as standard. To return a fast charge, repeat the steps and enter a value of 1500 (1.5A) or 2000 (2A).

Method 3: Use of third-party applications (root required)

If your Redmi Note 6 Pro has root rights, you can use specialized charging control utilities. One of the most popular apps is AccA (Accumulate Charge Accelerator) or Battery Charge Limit. These programs allow you not only to turn off fast charging, but also to set a charge limit (for example, stop charging by 80% to extend the life of the battery).

Instructions for AccA:

1. Download and install AccA from XDA Developers (official website).
2. Open the application and provide root access.
3. In the Charge Control section, find the Fast Charge option and turn it off.
4. Apply the changes and restart the phone.

Important: Using root applications can lead to loss of warranty and unstable system operation. Before installation, make a full data backup via TWRP or MIUI Backup.

💡

If the phone starts charging too slowly after the fast charge is turned off (more than 4-5 hours to 100%), check the cable and charger. USB-port or oxidized contacts.

What to do if fast charging does not turn off

Sometimes, even after all the manipulations, the phone continues to charge in an accelerated mode, this may be due to:

• 🔌 A non-original charger, many third-party adapters ignore the limitations. MIUI and give maximum current.
• 📱 It's a power controller malfunction, and then you can reset the settings to the factory or flash it over.
• 🔄 Update the firmware, after update. MIUI Some settings are reset to default values.

If the problem is not solved by software methods, you can try the hardware limitation:

1. Use a 5W (5V/1A) charger instead of the standard 18W charger.
2. Connect the phone to USB-port of a computer or laptop - there the current is limited at the level of 0.5A.
3. Purchase a power bank with adjustable output current (e.g. Xiaomi Mi Power Bank 3 with low-current charging mode).

⚠️ Warning: If after the fast charge is turned off, the phone starts to turn off on its own when connecting to the charger, this may indicate a malfunction of the battery or motherboard.

How to check if fast charging is actually off

To make sure that the changes have come into force, you can use several methods:

1. Charging time: A full cycle of 0% to 100% should take 3.5-4.5 hours (versus 1.5-2 hours with Quick Charge).
2. Case temperature: When charging normally, the phone is heated to no higher than 30–35°C (checked through applications like AIDA64 or CPU Monitor).
3. Charging current: Use the AccuBattery utility (Google Play) to see the actual current. When fast charging is turned off, it should not exceed 500-800 mA.

If the scores don't match the expectations, then the settings didn't apply. Try repeating the procedure or using an alternative method.

💡

Turning off fast charging does not affect the speed of the smartphone, but can increase battery life by 10-15% due to reduced heating and more even distribution of the load on the battery.

Frequent questions about fast charging on the Redmi Note 6 Pro