How to turn on Xiaomi phone fast charging: full instructions with nuances

Did you buy a new Xiaomi smartphone with fast charging support, but the battery is charging too long? or did the MIUI update stop working? In this article, we will examine all the ways to enable fast charging on Redmi, POCO and Xiaomi phones - from compatibility checks to hidden system settings.

It's important to understand that fast charging on Xiaomi depends not only on the phone's settings, but also on the components. Even if the specs say Fast Charging 33W or HyperCharge 120W, without the right charger and cable, the technology will not work. We will tell you how to check all the components and adjust them for maximum speed.

This article is relevant for all modern models, from the budget Redmi Note 12 to the flagship Xiaomi 14 Ultra. If your phone is released after 2020, most likely it supports one of the fast charging technologies – you just need to activate it correctly.

1.How to check if your Xiaomi supports fast charging

Before you set up the feature, make sure your smartphone supports it. The manufacturer does not always include the adapter in the kit, especially in budget models.

There are three ways to check:

• 📱 Find a phone model on mi.com and see Battery & Charging. Look for mentions of Fast Charging, Quick Charge, Turbo Charging or HyperCharge.
• 📄 Box and documentation: The package or booklet usually contains the supported charging standards (e.g., the standard used for the charger, 33W Pro Fast Charging).
• 🔍 Security app. Go to Settings. → The phone. → All the features and find the line Fast charging.

If the specs indicate Standard Charging (10W/18W), your phone does not support accelerated charging – no settings will help. In this case, you can consider buying Power Bank with Quick Charge 3.0 support for partial acceleration.

2.What chargers and cables are suitable for fast charging

Even if the phone supports Fast Charging 67W, but you use a cheap 5W charger, the top speed will not be available.

Important: Using uncertified cables can cause the USB-C port to overheat and the power controller to fail, especially HyperCharge models that have a current of 6A.

We recommend buying original Xiaomi adapters or certified analogues from Anker, Baseus, Ugreen. Avoid cheap "no-name" charging - they often do not match the declared power.

⚠️ Note: If you use wireless charging, the top speed is usually limited 30W (Even on the flagships, for full power. 67W+ Be sure to connect by cable.

3. Step-by-step instructions: how to enable fast charging in the MIUI settings

On most Xiaomi smartphones, the fast charging feature is activated by default, but after updating the firmware or resetting the settings, it can turn off. Here's how to return it:

1. Open Settings → Battery and Performance.
2. Slip on Battery Settings (or Charge on newer versions of MIUI).
3. Find the Fast Charging option (on some models – Accelerated Charging or Turbo Charging).
4. Activate the switch. If there is no option, your phone does not support the function (or requires a firmware update).

On some devices (e.g., POCO F3), the path may be different:

Settings → Additional → Special features → Optimization of charging

If the charging speed has not changed after turning on, try:

• 🔌 Reconnect the charger (sometimes resetting the connection helps).
• 📱 Rebooting your phone will reset the system’s time constraints.
• 🔄 Update the firmware to the latest version (new updates often fix charging bugs).

💡

On models with HyperCharge 120W+ (such as Xiaomi 11T Pro) in the first 10 minutes of charging the phone can heat up to 40-45 ° C — this is normal. If the temperature is above 50 ° C, turn off the charging and check the adapter.

4. Hidden settings: how to unlock maximum charging power

On some MIUI firmware, fast charging is artificially limited to extend battery life, and you can use a developer mode or an engineering menu to remove the restriction.

Method 1: Through the Developer Mode

1. Activate Developer Mode: Go to Settings → About Phone and tap the MIUI version 7 times.
2. Back to Settings → Additionally. → For developers.
3. Find the Fast Charge Force Enable (or Fast Charge Force Enable) option and turn it on.

Method 2: Engineering menu (for experienced users)

1. Open the Phone app and type ##4636###


2. Go to "Battery Information"




3. Check the line "AC Charge" - if the value is less than 5000 mA, the charging is not running at full power




4. To reset the restrictions, type ##36446337## (not working on all models)

⚠️ Warning: Changing hidden settings can lead to accelerated battery wear. If the phone is new, it is better not to include forced fast charging - the manufacturer has already optimized the balance between speed and durability.

5 Why fast charging doesn't work: Common problems and solutions

If you’ve set everything up but your phone is still charging slowly, check out these points:

Pay special attention to the state of the USB-C port. If dust has accumulated inside or contacts have oxidized, the phone may not recognize a powerful charger. Clean the port with a wooden toothpick (not metal!) and blow with compressed air.

On models with MediaTek Helio (such as the Redmi Note 11), fast charging may not work due to a bug in the firmware.

• 📥 Install the latest update through Settings → Update of the PO.
• 🔄 Reset the settings to factory (pre-make a backup).
• 🛠️ If nothing helps, contact the service center - the power controller may be faulty.

💡

On phones with a battery of 5000 mAh+ (such as the POCO M5), even at 33W, it takes ~1.5 hours to fully charge. That's normal — more capacity takes longer.

6.How to Check Real Charging Speed on Xiaomi

To make sure that fast charging actually works, you can measure the current power. Here are three ways:

Method 1: Through the AccuBattery application

• 📊 Install the app from Google Play.
• 🔌 Connect the charger and open the Charging tab.
• 📈 Check the chart if the power is higher 15W, fast-charging active.

Method 2: Through the Engineering Menu

1 Enter ##4636##


2. Go to "Battery Information"




3. Look at the lines:




AC Charge – current power (in mA)




Voltage (should be 5V/9V/11V for fast charging)

Method 3: Through the Ampere app

This app shows the charging current in real time. For a Fast Charging 33W, the value should be in the range of 3000-5000 mA.

If the power is lower than expected, try:

• 🔄 Reboot the phone with a connected charger.
• 📵 Turn on aircraft mode - background processes can limit current.
• 🔋 Check the battery temperature (optimally — 25-40°C).

7.Fast charging myths: what's true and what's not

There's a lot of rumors about fast-charging technology, and we're going to look at the most popular ones.

Myth 1: “Fast charging ruins your battery in 6 months”

❌ Not exactly. Today's Xiaomi smartphones use charging controllers that regulate current based on temperature and charge level. When used correctly (not to keep constantly on charging, avoid overheating), the battery will last. 2-3 Even with HyperCharge.

Myth 2: “You can use any charger with the same power”

❌ Like a laptop charger on the computer. 65W It may not be suitable for Xiaomi. 12T Pro, as protocol support is required PD 3.0 or QC 4.0+. Always check for compatibility.

Myth 3: “If you turn off charging optimization, your phone will charge faster.”

✅ Right, but with reservations, optimizing limits charging to 80 percent to extend battery life, and you can turn it off, but you'll have to change the battery more often.

Myth 4: “Fast charging only works with the original cable”

✅ Partly true. For HyperCharge. 120W+ You really need a special cable with an E-Marker chip, but for Quick Charge 3.0 (18W) Any quality will do. USB-C cable.

Myth 5: “It’s 100% harmful to charge your phone”

✅ Right. Lithium-ion batteries degrade faster when charged to maximum — 20-80%. V MIUI There is an optimised charging function that automatically limits the charge to 80%.

8.Alternative ways to accelerate charging without fast charging

If your Xiaomi doesn’t support fast charging technology, you can speed things up a bit in other ways:

• ⚡ Turn off your phone while charging. When you're off, the smartphone charges to the battery. 10-15% faster.
• 📵 Turn on the plane mode. That turns off the communication modules (4G, Wi-Fi, Bluetooth, which consumes energy.
• 🔌 Use a charger with more power, like a phone with support. 18W You can take the adapter. 30W — charging will go at the maximum possible speed.
• 🧊 If the battery is heated (for example, after games), let it cool to 30.°C is a speeding up process.
• 🔋 Charge when the screen is off. The display is one of the main consumers of energy.

On removable battery models (such as the old Redmi 4X), you can use external chargers like the Xiaomi Mi Charge Turbo, which charge the battery outside the phone in 10-15 minutes, but are only suitable for certain models.

⚠️ Warning: Don’t use “turbochargers” from other brands (like the OnePlus Dash Charge) – they can damage Xiaomi’s power controller due to different protocols.

FAQ: Frequent questions about fast charging on Xiaomi