Xiaomi Mi 8 Lite is equipped with Quick Charge 3.0 technology, which allows you to charge the battery up to 50% in just 30-40 minutes. However, not all users are happy with this feature: some notice the device overheating, others want to extend the battery life, and still others simply prefer slow charging for safety. In this article, we will discuss how to completely disable fast charging on the Mi 8 Lite – from standard settings to hidden features of the engineering menu.
It is important to understand that the manufacturer does not always provide direct access to this option. ADB-We will describe each method in detail, point out the possible risks and give recommendations on alternative solutions - for example, how to limit the charging current without completely shutting down the function.
Why users want to turn off fast charging
Quick Charge technology is really handy, but it has a downside, and here are the main reasons why Xiaomi Mi 8 Lite owners are looking for a way to deactivate it:
- 🔥 Overheating of the case - with rapid charging, the battery temperature can rise to 40-45°C, which adversely affects its resources.
- 📉 Accelerated battery degradation – Lithium-ion batteries wear out faster at high charging currents, especially if the device is already in use 2-3 year-end.
- ⚡ Unstable power supply – in regions with frequent voltage surges, fast charging can cause failures or even damage to the power controller.
- 🛠️ Repair or diagnostics – some service centers recommend turning off Quick Charge before checking the short circuit board.
And many users don't need to charge fast enough, for example, if you charge your phone overnight, the difference between 2 and 4 hours is not a big deal, but turning off fast charging can extend battery life by 15-20% with regular use.
Method 1: Disconnect via standard settings (MIUI 10–14)
The easiest method is to use built-in MIUI options. Unfortunately, in some firmware versions, this item is hidden, but it can be activated through the Developer Settings.
Instructions:
- Open the Settings. → The phone.
- Click 7 times in a row on the MIUI version until the notification “You became a developer” appears.
- Return to the main settings menu and select Additional settings → Developer settings.
- Scroll down and find the option to Disable Fast Charging (or Limit Charging Current in Newer Versions).
- Activate the switch and confirm the action.
If this item is not available, then your version of MIUI does not support it, in which case move on to the following ways.
☑️ Preparing for Quick Charge Disconnection
Method 2: Use of the ADB-Teams (for experienced users)
If the standard method does not work, you can use ADB (Android Debug Bridge is a debugging tool that allows you to change hidden system settings. ADB It can cause malfunctions in the phone.
Step-by-step:
- Download and install Platform Tools (the official package from Google).
- Connect Xiaomi Mi 8 Lite to your computer via USB and enable USB Debugging in Developer Settings.
- Open the command line (cmd) in the folder with the platform-tools.
- Enter the command to check the connection: Adb devices Make sure your phone appears in the list.
- Execute the command to disable fast charging: adb shell settings put global fast_charge 0
- Reset the device.
To return a quick charge, use the same command, replacing 0 by 1.
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If the command fails, try the alternative: adb shell settings put global. charging_speed 0. In some firmware, the parameter is called differently.
Method 3: Engineering menu (hidden settings)
The Xiaomi Mi 8 Lite has a hidden engineering menu where you can manually limit the charging current, a method that works on most devices with a Qualcomm Snapdragon 660 processor, but requires caution.
How to open the engineering menu:
- Open the Phone app.
- Enter the combination: ##4636###.
- Select the Battery Information item.
- Click on the AC charge limit (or USB charge limit) and set the value of 500 mA or 1000 mA.
This method does not disable Quick Charge completely, but significantly reduces the charging speed.Caution: changes in the engineering menu can lead to unstable operation of the device if you set incorrect settings.
What to do if the engineering menu is not opened?
Alternative solutions: how to reduce the load on the battery
If you can’t turn off fast charging or don’t want to take risks, there are other ways to reduce battery wear:
- 🔌 Use the original charger – non-original adapters can deliver unstable voltage, which accelerates battery degradation.
- 🌡️ Avoid charging at high temperatures – do not leave your phone in the sun or near heat sources.
- 🔋 Keep the charge level in the range of 20-80% – full discharge and 100% charge reduce the life of lithium-ion batteries.
- 📵 Turn off your phone from charging overnight – a constant connection to the network even at 100% charge creates microcycles that are harmful to the battery.
You can also use battery monitoring applications like AccuBattery or Battery Guru, which show real battery wear and help optimize the charging process.
Table: Comparison of methods for shutting down fast charging
| Method | Difficulty | PC required | Risks. | Efficiency |
|---|---|---|---|---|
| Standard settings | ⭐ (simple) | ❌ No. | Low. | Medium (not working on all firmware) |
| ADB-team | ⭐⭐⭐ (middle-of-the-road) | ✅ Yes. | Medium (risk of failure when incorrectly entered) | Tall. |
| Engineering menu | ⭐⭐ (middle-of-the-road) | ❌ No. | High (incorrect settings can damage the system) | High (but not complete shutdown) |
| Third-party annexes | ⭐⭐ (middle-of-the-road) | ❌ No. | Medium (possible conflicts with MIUI) | Low (frequently blocked by the system) |
As you can see from the table, ADB is the most reliable way, but it requires technical skills, and if you're not confident, you'd better use the standard settings or the engineering menu with caution.
Frequent Mistakes and How to Avoid Them
When trying to turn off fast charging, users often encounter problems, and here are the most common errors and solutions:
⚠️ Note: If after changing the settings through ADB or the engineering menu phone stopped charging at all, reset the settings to factory (Settings) → Additionally. → Recovery and reset. This will return all parameters to their original state.
- ❌ Team team. ADB Not applicable – make sure that the debugging is USB It's on and the drivers are installed correctly.
- ❌ The engineering menu will not open – check if it is blocked by an antivirus or MIUI Optimization (disable in the developer settings).
- ❌ After the reboot, the settings reset -- some of the parameters in the engineering menu are not saved. ADB permanent change.
- ❌ The phone doesn't turn on after the changes, which may indicate damage to the power controller.
If none of these methods worked, your version of MIUI may block these changes, leaving only a mechanical solution to use a low-current charger (e.g., from an old 5V/1A phone).
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On devices with MIUI 12.5 and later, some ADB commands can be blocked by Xiaomi’s security policy, in which case only manual editing of system files (requires root rights) will help.