How to turn off fast charging on Xiaomi Redmi 8 Pro: all ways + tips on battery

Xiaomi Redmi 8 Pro

fast-charging

Quick Charge 3.0

All available ways to disable fast charging

Redmi 8 Pro

Disabling fast charging is not an obvious process, because Xiaomi does not make this option into the basic settings, but with our instructions you can do it without root rights and without risk to the device, and we will also explain what the consequences of the battery after turning off fast charging and how this will affect battery life.

If you decide to turn off fast charging, it’s important to understand that this is not a panacea for battery wear. Modern lithium-polymer batteries degrade anyway, but the right settings can slow down the process. In this article, you will find not only instructions, but also practical tips for caring for the Redmi 8 Pro battery, which will help to extend its life by 20-30%.

Why users are turning off fast charging on Xiaomi

The fast-charging technology seems like the perfect solution: less time for the outlet, more freedom, but in practice it has several disadvantages that make owners of the Xiaomi Redmi 8 Pro look for ways to turn off:

🔋 Accelerated battery wear: Fast charging increases the battery temperature, which reduces battery life. Research shows that with constant use of Quick Charge, battery capacity can drop 15-20% faster than with standard charging.

🔥 The Redmi 8 Pro is not equipped with active cooling, and with fast charging, the case can heat up to 40-45.°C. Not only is it unpleasant for the hands, but it is also potentially dangerous for the internal components.

⚡ Unstable voltage: Cheap chargers or low-quality cables paired with Quick Charge can cause voltage surges, theoretically increasing the risk of damage to the power controller.

⏳ Uneven charge. Some users have noted that fast charging takes the last 20 percent longer than normal charging, and this is due to protection algorithms that fire at high currents.

💡 Personal preference.Some people just don't like the phone warming up or the charging accompanied by a loud buzzing power supply.

If any of these things are bothering you, turning off fast charging might be a smart solution, but before we get to the instructions, let’s get to the specific charging modes that the Redmi 8 Pro supports.

What are the charging modes in Xiaomi Redmi 8 Pro

Xiaomi Redmi 8 Pro supports several charging modes, and not all of them are equally useful for the battery.

• 🔌 Standard charging (5V/2A) — The basic mode that is used with most non-original chargers: ~10–15% The least aggressive for the battery.
• ⚡ Quick Charge Charge Charge Fast Charge 3.0 (9V/2A or 12V/1.5A) — Main mode when using the original power supply. Speed: up to 50% post 30 Maximum heat and wear.
• 🔄 Adaptive charging – Xiaomi automatically adjusts current based on battery temperature. turns on by default, but doesn’t always work perfectly.
• 🛡️ Sparing mode – limits the charge to 80-90% for extended lifespan, available only through an engineering menu or third-party apps.

By default, the smartphone always tries to use the maximum power possible if the power supply allows it. For example, if you connect the Redmi 8 Pro to 18W charging, it automatically activates Quick Charge 3.0. To avoid this, you need to manually limit the mode.

Interesting fact: even if you turn off fast charging, the smartphone will still use a slightly increased current (about 5V/2.4A) with the original power supply, fully transferring it to 5V/1A only through the engineering menu or special applications.

Method 1: Disable fast charging via MIUI settings

The easiest and safest method is to use the built-in MIUI options. Unfortunately, there is no direct “Disable Fast Charging” button in the Redmi 8 Pro, but you can bypass this restriction through hidden settings.

You'll need:

• 📱 Xiaomi Redmi 8 Pro with firmware MIUI 11–14.
• 🔌 Original or certified charger.
• ⚙️ Access to battery settings (no root rights required).

Step-by-step:

1. Open the Settings app.
2. Go to the Battery and Performance section.
3. Slap the icon. ⚡ in the upper right corner (or select Battery Settings).
4. Find Charging Modes (in some versions of MIUI, it may be called Charging Optimization).
5. Activate Sparing Mode Switch or Limit Fast Charging.
6. Confirm the changes and restart the device.

If there is no Charging Mode, then your version of MIUI does not support this option directly, in which case move on to the next method.

⚠️ Attention: After disabling fast charging through settings MIUI The smartphone can still use the increased current with some power supplies.

Method 2: Use of the Engineering Menu (without root)

If the standard settings don’t work, you can use the Engineering Mode, which works on most Xiaomi devices, including the Redmi 8 Pro, and doesn’t require superuser rights.

Warning: Mistakes in the engineering menu can cause malfunctions in your smartphone. Follow the instructions carefully!

How to open the engineering menu:

1. Open the Phone app.
2. Enter the combination: ##4636###.
3. In the menu that appears, select Battery Information.
4. Tap on point. USB-charging (or charging).
5. In the list of modes, select AC Charging (5V/1A) or Standard Charging.
6. Save the settings and restart the phone.

If #4636### doesn’t work, try an alternative method:

• 📲 Install the Kernel Adiutor app (required) MIUI limitless).
• 🔧 Go to the Power section → Charging.
• 🔢 Set the maximum charging current per 1000 mA (1A).

Important: After resetting or updating MIUI, the engineering menu can return to factory settings. Check them after each major update.

💡

If the engineering menu doesn't open, try entering the combination through the Calculator app: dial ==4636== and press "=." This is an alternative way to access some firmware.

Method 3: Applications for charging control (requires unlocking the bootloader)

If the first two methods didn't work, you can use third-party utilities, but they will require unlocked bootloader and possibly root access, which is a risky way, but it gives you maximum control over charging.

The best applications for charging management:

If you decide to root, remember:

• ⚠️ The warranty on the device will be cancelled.
• 🔓 Unlocking the bootloader erases all data from the phone.
• 🛡️ Some banking applications may stop working.

The easiest way to get root for the Redmi 8 Pro is through Xiaomi’s official unlocker, but the process takes up to 7 days (wait for approval).

💡

Using third-party rootless apps (such as AccuBattery) doesn’t turn off fast charging completely, it only limits it at the software level.

What to do if fast charging does not turn off

Sometimes, even after all the manipulations, the smartphone continues to use Quick Charge.

🔌 The power supply problem:

• Use a 5V/1A fixed current charger (like from an old Nokia or Samsung).
• Check the cable – cheap cables can trick the controller into enabling fast charging.

⚙️ Firmware failure:

• Reset the settings to factory settings (Settings → Additional → Recovery and Reset).
• Update MIUI to the latest version (sometimes bugs are fixed in new builds).

🤖 Limitations MIUI:

• On some versions MIUI (especially global) the option to turn off fast charging is blocked. EU-firmware.

🔧 Hardware malfunction:

• If the power controller is damaged, it can ignore the software constraints, and then only repairs will help.

If nothing works, the last option is to physically limit the current with a special adapter, such as USB Condom, which blocks the transmission of data about supported charging modes, forcing the phone to use the standard 5V/1A.

⚠️ If the phone starts charging very slowly after the fast charge is turned off (less than 5% per hour), check if the mode is activated. USB-Debugging or Charging from the computer. Turn it off in the developer settings.

How to check if fast charging is actually off

To make sure that all manipulations were successful, you need to check the actual charging current.

📊 Through the AccuBattery app:

• Install the app from Google Play.
• Connect the phone to charging and open the Charging tab.
• Look at the current chart: if the value does not exceed 1000-1200 mA, fast charging is turned off.

🔍 Through the engineering menu:

• Open the engineering menu (combination ##4636##).
• Go to Battery Information.
• If you look at AC Input or USB Input, if the voltage is 5V and the current is less than 1.5A, it's okay.

🔌 With help. USB-tester:

• Buy it. USB-tester (stands) ~5$).
• Connect it between the charger and the phone.
• On the tester screen, the real values of voltage and current will be displayed.

If the current is still above 1.5A, the fast charging is not completely turned off, in which case, try a combination of methods (e.g., engineering menu + third-party app).

The impact of fast charging shutdown on Xiaomi Redmi 8 Pro battery

Now, to see what the fast-charging shutdown does, and whether it's worth it, we've analyzed the data from the research and user feedback to highlight the key points.

✅ The benefits of shutdown:

• 🔋 Extend battery life by 20–30% (assuming you charge your phone to 80–90%).
• 🔥 Reduced heating of the case during charging (temperature drops by 10-15)°C).
• ⚡ More uniform charge – the last 20% is gained faster than with Quick Charge.
• 🛡️ Less risk of voltage spikes if you use unoriginal cables.

❌ Cons of shutdowns:

• ⏳ Increase in charging time by 2-3 times (from 1.5 hours to 4-5 hours).
• 🔌 Not all power supplies support standard mode - some may not charge the phone at all.
• 📉 Possible reduction of maximum capacity with prolonged use of low current (paradoxically, but too slow charging can also harm the battery).

📊 Comparative table of battery wear:

The conclusion is that turning off fast charging is justified if you are willing to wait longer but want to keep the battery in good condition.

FAQ: Frequent questions about turning off fast charging