How to enable accelerated charging on Xiaomi Redmi Note 8 Pro: all the ways and nuances

Xiaomi Redmi Note 8 Pro is one of the most popular mid-range smartphones, but many owners are faced with the question: why their device charges too slowly, although the specifications claim support for fast charging 18W. In practice, the function can be disabled by default or work incorrectly due to system settings, poor-quality charger or firmware problems.

In this article, we’ll look at all the possible ways to enable accelerated charging on the Redmi Note 8 Pro, from basic MIUI settings to hidden developer settings, how to check the compatibility of the charger, which cables are suitable for maximum speed, and what to do if the smartphone stubbornly ignores the Fast Charge feature despite all efforts, and we’ll also look at common myths — for example, does the power saving mode affect the charging speed and whether it is possible to “overclock” charging above the factory 18W.

1. Checking the compatibility of the charger and cable

Before digging into your smartphone settings, make sure your charger and cable are physically capable of providing accelerated charging.The Redmi Note 8 Pro supports Quick Charge 3.0 (up to 18W) standard, but you need to meet three conditions to do so:

• 🔌 The charger must provide a minimum 9V/2A (or 12V/1.5A). Suitable original charging from Xiaomi on 18W, 27W, 33W, Certified analogues from Anker, Baseus or Belkin.
• ⚡ The cable should support data transmission and high current. Normal charging cables (power only) will not work. USB Type-C → USB Type-A marked with 3A or 5A.
• 📱 Port port USB-C Dust, oxidation or mechanical damage can block recognition of fast charging.

The Redmi Note 8 Pro does not support fast charging protocols from other brands (such as Samsung Adaptive Fast Charge or Huawei SuperCharge), even if the charger gives the desired power. The system recognizes only compatible protocols, so charging from an iPhone or MacBook (even at 20W) will work as standard.

⚠️ Warning: If you're using a power bank, check its power output. Most portable batteries give you the maximum. 5V/2A (10W), It's not enough to charge fast, except for the Quick Charge model. 3.0 (Xiaomi Mi Power Bank, for example 3 Pro).

2. Enabling fast charging in MIUI settings

By default, the Redmi Note 8 Pro should automatically activate accelerated charging when connecting a compatible charger. However, in some firmware (especially custom or global versions of MIUI), this feature can be disabled software.

Open the Settings app and go to: Battery and Performance → Battery Settings → Charging Mode.

• 🔋 If you see the "Fast Charge" option, turn it on. In some versions, MIUI It's called "Accelerated Charge" or "Quick Charge".
• ⚡ If you don't have an option, you automatically choose the mode depending on the charger. Try connecting the original charger and look at the battery icon: if lightning appears, you can see the battery (⚡), So fast charging is working.
• 🔄 If you have an option but gray (inactive) – the problem is in the charger or cable (see section 1).

Connect the original charging 18W|Open Settings → Battery → Charging mode|Make sure the “Fast Charging” option is enabled|Reboot the smartphone after the changes-->

On some firmware (e.g. MIUI 12.5+ for the global version), the path to settings may be different. If you don't find the Charging Mode section, try:

1. Open Settings → The phone.
2. Press the MIUI version 7 times to activate the developer mode.
3. Back to the settings → Additional → for developers.
4. Find the option “Disable Charging Limit” (if any) and enable it.

⚠️ Attention: Redmi Note 8 Pro with firmware based on Android 10 and older can work thermal protection, which forcibly reduces the charging speed at a battery temperature above 40°C. If the smartphone heats up while charging, it’s normal, but the speed may drop to standard. 5W.

3. Hidden settings: how to force Quick Charge to be enabled

If standard methods do not work, you can try to activate fast charging through the engineering menu or ADB commands. These methods are suitable for advanced users and require caution.

Method 1: Engineering menu (code #4636##)

1. Open the Phone app and enter the combination: ##4636##.
2. Go to the tab "Battery Information".
3. Look at the AC Charge line – if it says 9V or 12V, it means fast charging is working.
4. If you only see 5V, the problem is with the charger or cable.

Method 2: ADB-Teams (for advanced users)

This method requires an unlocked bootloader and ADB drivers installed. If you don’t know what it is, skip this section.

adb shell settings put global fast_charge_forced_enable 1

This command is forced to enable fast charging, but may not work on all firmware. Once executed, restart your smartphone.

4.Why fast charging doesn't work: common causes

If you’ve completed all the steps, but the Redmi Note 8 Pro is still charging slowly, check out the following points:

• 🔋 Battery wear: After 500-700 charging cycles, the battery capacity drops and the system can automatically limit current. → Battery → Battery status.
• 📉 Background: If you're playing games or using a navigator while charging, speeds may slow down. Close all apps and try charging your smartphone in aerial mode.
• 🔄 Unoriginal firmware: Custom firmware (such as LineageOS or Pixel Experience) often does not support Quick Charge due to the lack of drivers.
• 🛠️ Hardware problems: Damaged power controller or connector USB-C They can block fast charging. If your smartphone falls or gets wet, contact the service.

Performance test: Connect your smartphone to charge, and after 10 minutes, check the temperature of the case. If it's cold, it's probably in standard (5W) If it's warm, fast charging works, but some of the energy is used to heat.

5. Myths about fast charging: what's true and what's not

There's a lot of rumors going around the Quick Charge technology.

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If you frequently charge your smartphone on the go (in the car, at work), use portable chargers with Quick Charge 3.0, such as the Xiaomi Mi Car Charger Pro or Baseus GaN 2.

6. Alternative ways to speed up charging (if Quick Charge doesn't work)

If you fail to turn on fast charging, you can optimize the process in other ways:

• ❄️ Cooling your smartphone: Put it on a cold surface (like ceramic tiles) or use a cooling stand.The system reduces current when overheating.
• 🔌 Disconnecting while charging: A smartphone that is turned off charges 10-15% faster because it does not waste energy on background processes.
• 📴 Airline mode: Disables Wi-Fi modules, 4G Bluetooth, reducing the load on the processor.
• 🔄 Resetting battery settings: Go to Settings → Annexes → Application management → Three dots (menu) → Resetting application settings. This can help if the system misidentifies the charger.

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The most efficient way to speed up charging without Quick Charge is to combine air mode and cooling, which charges the Redmi Note 8 Pro 20 to 30 percent faster than normal use.

7. When to contact the service: signs of hardware malfunctions

If none of these things worked, you may have a problem with the hardware.

• 🔋 The smartphone is not charged at all or the charge is jerky (connects / disconnects).
• 🌡️ The case is very hot even when the screen is turned off (the risk of short circuit).
• 📉 Battery life has been reduced by 2-3 times (possible battery wear).
• 🛠️ Connector. USB-C wobbles or there are traces of oxidation.

Cost of repair:

⚠️ Warning: Don't use a smartphone with a bloated battery - it's dangerous! Signs: the case is deformed, the screen is "raised", the battery has increased in size.

Frequently Asked Questions (FAQ)