How to turn off fast charging on Xiaomi Poco X3 NFC: 4 proven ways

Why Turn Off Fast Charging on Poco X3 NFC and When You Really Need to

Xiaomi Poco X3 NFC has 33W fast charging support, which allows you to restore battery power to 62% in just 30 minutes. However, this technology has the downside: accelerated battery wear, overheating of the device and the potential risks when using non-original chargers. Poco X3 NFC owners often wonder how to turn off fast charging — especially if the phone is used in extreme conditions (heat, cold) or long-term storage is planned.

In this article, we’ll look at all the ways you can turn off fast charging, from standard settings to hidden engineering menu features, which are safe and which can have unexpected consequences, and where turning off fast charging can extend battery life by 15-20%, and when it’s useless.

Before you get to the instructions, make sure you understand the difference between hardware (total disabling of the charging controller) and software (software restriction) shutdowns: the first method requires root rights and can void the warranty, the second is reversible and safe.

Method 1: Disconnect via standard 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 Poco X3 NFC, but you can limit power through Optimized Charging mode.

Instructions:

• 📱 Open the Settings. → Battery.
• 🔋 Go to the Battery Settings section → Charging modes.
• ⚡ Choose Optimized Charging (limits charge to 80–90% and reduces speed).
• 🔄 Activate the option to Enable Adaptive Charging (if available).

This method doesn't shut down fast charging completely, but it reduces battery load by limiting current, and is suitable for daily use if you're slow to charge your phone.

Use the original charging 33W|Check the temperature of the phone (not higher than 35).°C)|Turn off background apps|Battery charge: 20-80% (optimum for tests)-->

Method 2: Engineering menu (#4636##) - hidden settings

For power users, the method is available through an engineering menu, which allows you to manually limit the charging current, but requires caution - incorrect settings can lead to failures.

Step-by-step:

1. Open the Phone app and enter the combination: ##4636##.
2. Go to the Battery Information tab.
3. Find the AC Charge Current option.
4. Change the value from 3300 mA (default) to 1000-1500 mA (standard charging).
5. Save the changes and restart the phone.

⚠️ Attention: After the reboot, the settings may reset. MIUI Block access to the engineering menu – in this case, you will need to ADB root-right.

Method 3: Applications for charging control (without root)

If standard methods do not work, you can use third-party utilities, for example, AccuBattery or Battery Charge Limit allow you to limit the charging current without deep changes in the system.

The best apps for Poco X3 NFC:

• 🔋 AccuBattery – monitors battery health and suggests limiting charge to 80%.
• ⚡ Battery Charge Limit – allows you to set the current limit (requires) ADB unlockable).
• 📊 3C Toolbox - Extended charging control (paid, but with trial-period).

⚠️ Note: Applications without root rights may not work in a stable way MIUI If the charging limit doesn't slow down after you set it, try turning off Mi-optimization in the battery settings.

Example of settings in AccuBattery:

1. Install the app from Google Play.
2. Go to the Charging section → Charge limit.
3. Set the 80 percent value and activate the option.
4. Connect the charger - the current will automatically decrease.

💡

If charging is not limited after installing the application, try disabling Automatic Optimization in the MIUI battery settings. This often solves the problem of conflict with background processes.

Method 4: Complete disabling via ADB (for advanced)

For those willing to work with ADB, there is a way to turn off fast charging at the system level, a method that requires a computer and basic command line knowledge.

Instructions:

1. Enable USB Debugging in Settings → About Phone → MIUI version (click 7 times, then go back to Additional Settings → For Developers).
2. Connect your phone to your PC and execute the command: adb shell settings put global fast_charge_enabled 0
3. Reset the device.

To return fast charging, use the same command with a 1 instead of a 0.

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The safest method is to use applications like AccuBattery, and completely shutting down via ADB or engineering menus is only suitable for advanced users, as it can lead to unstable charging.

What happens if you turn off fast charging: pros and cons

The decision to disable fast charging on the Poco X3 NFC has both advantages and disadvantages. Let's take a closer look at them.

Pros:

• 🔋 Extending battery life – reducing current reduces battery degradation by 15-20% in 2-3 years.
• 🌡️ Less heating – the phone doesn’t overheat during charging, which is important for gaming sessions.
• 🔌 Compatibility with non-original charges – reduces the risk of damage to the power controller.

Cons:

• ⏳ Increased charging time - with 33W standard 5W/10W (s 1 hourly 3–4 hours).
• ⚡ Discomfort in travel – fast charging is critical if you need to urgently restore charge.
• ⚠️ Failure risk – if the engineering menu is incorrectly set up or ADB It may be a loss of charge at all.

If you use your phone intensively (games, video, navigation), turning off fast charging can create discomfort, and the best option is a combined approach: turn off accelerated charging at night or during long downtime, and use it as needed at the rest of the time.

Frequent Mistakes and How to Avoid Them

When trying to turn off fast charging, Poco X3 NFC users often face typical problems, and here are the most common ones and ways to solve them:

1. Settings are not saved after restarting

This is typical of changes in the engineering menu.

• Use Tasker or MacroDroid to automatically apply settings after you turn on.
• Install the 3C Toolbox, which captures the system level.

2.The phone doesn't charge at all

If after manipulation with ADB or engineering menu charging disappeared:

• Return the standard settings with the command: adb shell settings put global fast_charge_enabled 1
• Reset the battery settings in Settings → System → Reset settings → Reset battery settings.

3.Applications do not limit current

MIUI often blocks background processes.

• Add the application to Auto Run and Without restrictions (in battery settings).
• Turn off Mi-optimization for a specific application.

FAQ: Answers to popular questions