Why Xiaomi has stopped fast charging and how to fix it

You connected Xiaomi smartphone to the charger, but instead of the usual 30-60 minute 100% battery 2-3 Or did the lock screen instead of saying "Fast Charging" appear "Charging" without specifying? This problem is familiar to many owners of the brand's devices - from budget Redmi Notes to flagship Xiaomi devices. 13. V 80% In some cases, it is not the fault, but the software failures or incorrect settings.

In this article, we will analyze all possible causes - from banal contamination of the connector to hidden restrictions. MIUI, You'll learn how to diagnose a problem for a fast charger. 5 So we've also collected some unique data on Xiaomi models. 2020-2026 years in which fast charging is turned off due to hardware features (spoiler: this applies to Redmi Note) 11 Pro+ and POCO F4 GT).

1.How to tell if fast charging is really gone

Before you panic, make sure that the problem is not your expectations.Fast charging on Xiaomi works according to certain rules:

• 🔋 Charge percentage: Most models activate accelerated charging only to the maximum 80-85%, Then switch to normal mode to protect the battery.
• ⚡ Temperature: If the phone overheats (over 40)°C) or too cold (below 10)°C), the system automatically reduces the power.
• 🔌 Port used: on some models (for example, Xiaomi 12 Pro) fast charging works only through the bottom USB-C, Not through a wireless station.

To confirm the problem accurately:

1. Connect the original charger (from 33 watts for most models).
2. Check the sign on the lock screen: there should be a phrase “Fast Charging” or “Turbo charging”.
3. Time: When you are fast charging with 10% before 50% should not leave any more 30 minutes (for devices with support) 67 Wh-oh — 15-20 minute).
4. Use the AccuBattery app (available on Google Play) to measure the actual charging speed in mA/h.

If the speed is clearly lower than the manufacturer's stated speed (for example, 10 W instead of 33 W), proceed to the diagnosis of the causes.

2. Programmatic reasons: when firmware or settings are to blame

In 60% of cases, fast charging disappears due to failures in the MIUI Or the wrong user settings. Let's start with the simplest one:

Resetting the charging settings in MIUI

In the latest versions MIUI (13 and later) there's a hidden "Adaptive Charging" mode that can limit power:

1. Go to Settings → Battery and Performance → Battery Settings
2. Find the option “Adaptive Charging” or “Optimized Charging” and turn it off.
3. In some firmware, this item is hidden - then use the search by settings (the magnifying glass icon at the top).

If there is no item, try an alternative path:

Settings → Special features → Additional settings → Battery optimization

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On models POCO F3 Xiaomi 11T Adaptive charging can be called “Smart Charging” and is located in the “Advanced” section inside the battery settings.

Resetting the system cache

Charging is controlled by system processes, and their cache can be jammed, to reset it without losing data:

1. Turn off the phone.
2. Press the Power button + Volume up until the Mi logo (Recovery mode) appears.
3. Select Wipe & Reset → Wipe Cache (Manage volume buttons, confirmation – power button).
4. Reset the device.

This method helps in 30% of cases when fast charging disappears after an update MIUI.

Update of firmware

In some versions MIUI There were some charging control bugs. MIUI 12.5 for Redmi Note 10 Pro after updating from 12.0.8 to 12.5.3 for many users, the charging speed dropped to 10 W. The solution is to upgrade to the latest stable version:

• 📱 Go to Settings. → The phone. → Updating the system.
• 🔄 Click on “Check Updates” and install the latest version.
• 🔧 If the update doesn’t help, try to roll back to the previous version via Fastboot (instruction below).

Hidden settings for developers

There are options on the developer menu that affect charging, so you can activate it.

1. Go to Settings. → The phone.
2. Press 7 times on the item "Version" MIUI».
3. Go back to the basic settings and open a new section for developers.
4. Find options: Turn off the charging restriction (if any) - turn on. USB-Configuration – Select “Charge” (sometimes worth it «MTP» or «PTP»).

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On models with Qualcomm Snapdragon 8 Gen 1/2 (for example, Xiaomi 12 Pro, POCO F4 GT) In the developer menu there may be a paragraph “Restriction of charging current” – it must be turned off.

3. Hardware causes: when the problem is in the "iron"

If the software methods didn't work, check the hardware, and let's start with the obvious thing, the charger and the cable.

Test of charger and cable

Many users miss the fact that fast charging requires not only a powerful adapter, but also a high-current cable, for example, 67 watts require a cable with a resistance of no more than 0.5 ohms.

How to check:

• 🔌 Try the original charger and cable from the kit.
• 🔄 Connect your phone to another adapter with the same or higher power (e.g. if you have 33 watts, try 67 watts).
• 📱 Check the cable for damage (bending, melting).

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If you have a Redmi Note 11 Pro+ Xiaomi 11T Pro, never use chargers from other brands above 120W – this could damage the power controller!

Cleaning the connector USB-C

Dust, pile, or contact oxidation are common causes of poor charging.

1. Turn off the phone.
2. Use a wooden toothpick (not metal!) or compressed air to remove debris.
3. Wipe the contacts with a cotton swab soaked in isopropyl alcohol (not vodka!).
4. Let the connector dry for 10-15 minutes.

⚠️ Do not use needles or pins – they can bend the contacts, and then you will need to replace the connector.

Diagnostics of the battery

If the battery is worn out (capacity below 80% of its nominal value), the charging controller can artificially limit the power.

• 📊 Install the AccuBattery app and see the Battery Health option».
• 🔋 In the settings MIUI Go to Settings. → Battery → Battery status (not available on all models).
• 🔧 Use the engineering menu: dial in the phone application ##4636## and select Battery Information».

If the battery capacity is lower 3000 mAh (for models with nominal value) 4500-5000 It's time to replace it. With a non-removable battery, Xiaomi can only do this in a service center.

The original charger is used.

The cable is undamaged and maintains the right current

Connector. USB-C clean, contacts not oxidized

The battery is not bloated and holds the charge at least 4-5 hours

The phone does not overheat during charging.-->

Problems with the power controller

If all previous methods failed, the charging controller (the power control chip) may malfunction.

• 🔥 The phone is very warm even with normal charging.
• ⚡ The charge is jerky (fast, then slow).
• 🔋 Battery discharges faster than usual (even in standby mode).
• 📵 Phone does not turn on from charging (requires a connection to the PC).

In this case, self-repair is impossible - you need to replace the chip on specialized equipment: 3000-6000 RUB (depending on the model).

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On Xiaomi 11 Ultra and Mix 4 models, the power controller often fails after using non-original chargers above 67 watts.

4. Features of fast charging on different Xiaomi models

Not all Xiaomi smartphones support fast charging in the same way, but here are the key features for the popular series:

For example, the owners of the Redmi Note 11 Pro+ Often, when the screen or battery is replaced, fast charging is lost, because the power controller is tied to the original components and can block high power when “non-fair” parts are detected.

5.Fast charging gone after update MIUI: do

Updates MIUI Sometimes they break the charging, like when you get out. MIUI 14 Many Xiaomi users 12T and POCO X5 Pro complained of speed drop from 120 watts to 18 watts. Here's how to fix it:

Recoil on the previous version MIUI

If the problem appears immediately after the update, the most reliable way is to return the old firmware.

1. Download the correct version MIUI from the official website (for example, Xiaomi Firmware).
2. Unpack the archive and place the update.zip file in the root of the phone’s memory.
3. Go to Settings → About the phone → System update.
4. Click on the three dots in the upper right corner and select "Select firmware file."
5. Please specify the downloaded update.zip and confirm the installation.

⚠️ Warning: rollbacks may cause data loss.Pre-backup through Settings → Additionally. → Backup and reset.

Manual actuation of fast charging through ADB

If the rollback did not help or is impossible, you can try to turn on fast charging through ADB-For this, for this:

1. Install Platform Tools on your PC.
2. Activate debugging over USB in the developer settings.
3. Connect your phone to your PC and type in the command line: adb shell su echo 1 > /sys/class/power_supply/battery/fast_charge_enabled
4. Reset the device.

This method doesn’t work on all models, but it does work on the Redmi Note 9 Pro. POCO X3 NFC post-update.

Reset to factory settings

If nothing works, the last option is a hard reset, which will delete all the data, but return the charging settings to the factory:

1. Make a backup copy of important data.
2. Go to Settings → Additional → Backup and Reset → Reset settings.
3. Select “Erase all data”.
4. After restarting, set your phone as new.

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In the models with MIUI 13+ After reset, you may need to re-activate fast charging in the battery settings.

6.Fast charging doesn't work on wireless chargers

If you have a Xiaomi 12 Pro, 13 Pro or other wireless charging model, but it’s slow (e.g. 5W instead of 50W), check out:

• 🔄 Are you using the original Xiaomi wireless station (models) MDW7S or MDW8S).
• 📍 Is the phone correctly located on the charger (should be in the center, without displacements).
• 🔋 Is the “Charge Only” mode enabled in the wireless charging settings (available on the MIUI 14).
• 🔧 Is the charging connector closed with a cover or sticker (even a thin case can block the signal).

Xiaomi. 13 Pro and Mix Fold 2 wireless charging may not be running at full capacity due to overheating, in which case the system automatically reduces the power to 10-15 The solution is to cool the phone (for example, remove the case) or use charging in a cool room.

7.When to contact the service: signs of serious breakdowns

If you have tried all methods, but fast charging has not worked, it may be a problem that requires professional repair.

• 🔥 The phone warms up even when charging normally (above 50).°C).
• 💥 The battery swelled (seen by the raised screen or the warping of the body).
• ⚡ The swelling is a snag (or a snag) or a snag.
• 📵 The phone does not turn on from charging, only from the PC.
• 🔋 After replacing the screen or battery, charging became slow (possibly damaged plume or controller).

Average repair prices in official Xiaomi services (2026):

⚠️ Note: Do not contact unofficial services if you have a model with protection against unoriginal parts (for example, Xiaomi 13 Ultra or Mix Fold 3.

FAQ: Frequent questions about fast charging on Xiaomi