Fast charging on Xiaomi: how to turn on, disable and configure correctly

Modern Xiaomi smartphones support fast charging technology that allows you to restore up to 50-70% of battery capacity in just 30 minutes. However, not all users know how to manage this feature – where to turn it on, when to turn it off and how to check if it works at all. In this article, we will examine all the nuances from basic settings in MIUI to hidden settings for advanced users.

It's important to understand that fast charging is not only a convenience, but also a potential risk to battery durability.The manufacturer often limits the maximum power by default to extend battery life. We will show you how to safely activate all available modes, as well as when to return to standard charging. 13/14, Redmi K60) Budget Lines (Redmi Note) 12, POCO X5).

What is fast charging and how does it work on Xiaomi

Xiaomi’s fast charging technology is based on increasing current or voltage flowing to the battery. Depending on the smartphone model and charger, the power can reach 120W (for example, in the Xiaomi 12S Ultra) or 33W (in the budget Redmi), the main difference from standard charging is dynamic energy distribution: in the first 15-20 minutes, the battery is charged at maximum power, then the speed gradually decreases to protect the cells.

On Xiaomi smartphones, several standards are used:

🔌 Quick Charge 3.0/4+ — Compatible with most other brands (up to the 18W).
⚡ Mi Turbo Charge - proprietary technology (up to the 33W-120W, requires original zoo).
🔋 HyperCharge is the latest standard for flagships (e.g. Xiaomi 13 Pro with a high-end mobile phone). 120W).

For fast charging to work, three conditions must coincide:

The smartphone supports technology (check in the characteristics of the model).
A compatible charger (original or certified) is used.
The appropriate setting is enabled in MIUI (can be disabled by default).

📊 What charging power does your Xiaomi use?

Up to 18W (standard)

33W-67W (fast)

120W and above (ultra-fast)

I don't know.

How to Check if Your Xiaomi Supports Fast Charging

Before you look for settings, make sure your model is capable of accelerating charging at all. There are three ways to check:

1. Official specs. Go to mi.com, find your model, and see the Battery and Charging section. For example, the Redmi Note 12 Pro+ features 120W HyperCharge support, which is the maximum value that the original charger can provide.

2.The inscription on the charger: The original power supplies from Xiaomi are marked:

📱 MDY-12-EX — 33W (for most of the Redmi).
⚡ MDY-13-EP — 67W (for POCO F4 GT, Xiaomi 12T).
🔥 MDY-14-EU — 120W (flagship).

If your RAM is not original, check its power (indicated in watts on the case).Fast charging will only work if the RAM power is equal to or exceeds the maximum power of the smartphone.

3. Practical test: Connect your smartphone to charge and look at the lock screen if it shows the words Fast charging or the lightning icon. ⚡ — If it's not, either the device is not supported or the setting is disabled.

What if your smartphone doesn’t detect fast charging?

1. Try another charger (original or Quick Charge 3.0+ enabled). 2. Check the cable - it should support data transfer (usually labeled "USB 2.0 High-Speed" or "USB-C"). 3. Clean the charging port of dust (use a wooden toothpick, not metal objects!) 4. Update the firmware: sometimes bugs in the software block fast charging.

Step-by-step: how to enable fast charging on Xiaomi

Most Xiaomi models have the default fast charging feature activated, but some firmware (MIUI 13/14 for the European region) may limit it.

Method 1: Through the basic battery settings

Open Settings → Battery and Performance.
Select Battery Settings → Charging Mode (or Quick Charging).
Activate the switch to Enable fast charging.
If you have the option Ultrafast Charging (for models with 67W/120W), turn it on separately.

Method 2: Through a Hidden Menu of Engineering Settings (for Advanced Users)

##4636##

Enter this code in the Phone app, then:

Go to the Battery Information tab.
Look at the Charging Technology line – if Fast or Turbo is specified, the function is active.
If Standard is displayed, go back to the main settings and turn it on manually.

Use an original or certified RMS

Check the integrity of the USB cable

Update the firmware to the latest version

Clear the garbage charging port

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Method 3: Through the Security App (for older versions of MIUI)

In MIUI 10-12 firmware, fast charging settings are sometimes hidden in the Safety app:

Open Security. → Optimization.
Click on the battery icon → Battery settings.
Find the Quick Charging item and activate it.

⚠️ Note: On some models (POCO X3, Redmi 9) after the fast charging can appear warning about heating. This is normal – the smartphone will automatically reduce power if the temperature exceeds 40°C.

How to turn off fast charging and when to do it

Turn off accelerated charging is worth in three cases:

If the case gets hot while charging (above 45°C), Xiaomi automatically reduces the power, but it is better to turn off the function manually.

Instructions for unsetting:

Go to Settings → Battery and Performance → Battery Settings
Find the Quick Charging option and deactivate the switch.
For models with HyperCharge (such as Xiaomi 11T Pro), you may need to disable UltraFast Charging separately.

After the shutdown, the smartphone will charge at standard power (5W-10W).The full charge time will increase from 30-40 minutes to 2-3 hours, but this will reduce the load on the battery.

💡

If you often turn off fast charging, create a shortcut for quick access: add the Battery Settings widget to the home screen.

Comparison of charging modes: which is better to choose

The choice between standard and fast charging depends on your priorities. Below is a table comparing key parameters:

Parameter	Standard charging (5W-10W)	Fast Charging (18W-33W)	Ultrafast (67W-120W)
Charging time 0-100%	2-3 hours	1-1.5 hours	20-30 minutes.
Charging time 0-50%	1.5 hours	20-30 minutes.	10-15 minutes.
Heating the hull	Minimum (30-35°C)	Moderate (35-40°C)	High (40-45°C)
Impact on the battery	Minimum degradation	Moderate degradation	Accelerated degradation (with frequent use)
Requirements for RMS	Any (5W)	Quick Charge 3.0+ or Original Charge	Only the original high-power CC

Selection recommendations:

🏠 Home: Use ultrafast charging if in a hurry, or standard overnight.
🚗 In the car: Better to confine 18W (fast charging, as car adapters rarely support 67W+.
✈️ Traveling: Prefer the standard mode – this will reduce the risk of overheating in hot climates.

Frequent problems and their solutions

Even if you have correctly activated fast charging, there may be failures. Consider typical situations and ways to fix them:

1. Rapid charging is not activated.

🔌 Check the charger – it should support Quick Charge 3.0+ Or be original from Xiaomi.
📱 Update the firmware: in older versions MIUI There are some power-detection bugs.
🔄 Reboot your smartphone – sometimes resetting temporary settings helps.

2 Charging is slow, despite the on mode.

🌡️ A smartphone can automatically reduce power when it overheats. 10-15 minute.
🔋 Check the battery health in Settings → Battery → Battery status: If the capacity is below 80%, the charging speed is limited.
🔌 Try another cable – cheap cables often don’t support high currents.

3.The smartphone warms strongly during charging.

❄️ Remove the cover - it can block the heat sink.
📵 Do not use your smartphone while charging (especially for games or videos).
🔋 Turn off fast charging and go to standard mode.

⚠️ Attention: If a Xiaomi smartphone turns off or restarts when charging fast, immediately stop using your current charger! this may indicate a battery or power supply malfunction.

💡

If the fast charging doesn't work after all the manipulations, check the USB port for physical damage, often with bent contacts or oxidation.

Tips for optimizing charging for battery durability

Fast charging is convenient, but it shortens battery life. To extend the life of the battery, follow these recommendations:

1. Avoid full discharge and recharge.

🔋 Optimal charge range — 20-80%. Try not to go down below. 10% and not to be connected to the network after 100%.
📱 V MIUI 14 has Optimized Charging – it automatically limits the charge to 80% and brings it up to 100% just before your normal wake-up time.

2. Use original accessories.

⚡ Cheap chargers can produce unstable voltage, which damages the battery.
🔌 Cables with damaged insulation or bent connectors increase resistance and heat.

3. Control the temperature.

🌡️ Do not charge your smartphone at a temperature below 0°C or higher than 35°C.
🚫 Do not leave the device in the sun or near heat sources (e.g., on a torpedo in a car).

4. Set up a charging schedule.

⏰ Turn on the Charging Schedule in the battery settings so that the smartphone does not stay on charging all night.
📊 Use apps like AccuBattery (available on Google Play) to monitor battery status.

💡

If you rarely use fast charging, but want to keep it on, turn off Adaptive Charging in your battery settings. It can interfere with manual control.

FAQ: Answers to Frequent Questions

Can I use charging from another smartphone (such as Samsung or iPhone) to charge Xiaomi fast?

Yes, but with reservations: Chargers with Quick Charge 3.0/4+ support (such as from Samsung or OnePlus) will work, but the maximum power may be lower than the original RAM from Xiaomi. Charges from the iPhone (even 20W) do not support Xiaomi fast charging protocols, so they will work in standard mode (5W-10W). For models with HyperCharge (67W-120W) you need original RAM - other units simply will not be able to give the desired power.

Why does fast charging only work up to 80% and then slow down?

This is normal behavior for lithium-ion batteries. After 80%, the charging controller automatically reduces the current to: Prevent overheating (especially for high-capacity batteries, such as the 5000 mAh in the Redmi Note 12 Pro+). Extend the life of the cells — the last 20% of the charge is most critical for degradation. Comply with safety standards (MIUI has strict temperature and voltage restrictions). If you need to charge your smartphone to 100% faster, use the original RAM and charge in a cool room.

Is fast charging harmful to Xiaomi’s battery?

Yes, but the harm is minimized. Studies show that constant high-power charging (33W+) reduces battery life by 10-15% in 2 years. However: Modern Xiaomi smartphones have built-in protection mechanisms - automatically reduce power when overheated or high charge levels. If you use fast charging only when you really need it (for example, before leaving the house), and the rest of the time charge at 10W, the effect on the battery will be minimal. In MIUI 14, the Smart Charging feature is added, which analyzes your habits and optimizes the process to extend the life. Conclusion: fast charging is harmful, but not smarter to use it.

How do I know what kind of charging power is currently being used?

There are several ways: Lock screen: Some models (Xiaomi 13, POCO F5) display current power when you connect charging (e.g. 67W Turbo Charging). Ampere app: Download it from Google Play - it shows current and voltage in real time. Hidden menu: Enter code #4636##, go to Battery Information and see the Developer Level (AC) bar: Activate Developer Mode (click 7 times on the MIUI version in Settings → About Phone), then use the USB-based software, and use the PowerBlock.

Can you enable fast charging on Xiaomi via ADB?

Yes, but it requires technical skills, and if you don't have the option to turn on fast charging, you can try activating it through the settings. ADB: adb shell settings put global fast_charge_forced_enable 1 Please note: This team may not work on new versions. MIUI (starting MIUI 13). Misuse ADB This can cause malfunctions in the smartphone. (Redmi Note) 11 The function is blocked at the software level.We recommend first to try the standard ways of enabling the above.