Why Xiaomi is Slowly Charging and How to Fix It: The Complete Guide

Have you noticed that your Xiaomi has been charging unusually long? 1-2 Full charge hours are now required 4, 5 Slow charging is one of the most common problems among smartphone owners of this brand, but its causes are not always obvious. In this article, we will examine all possible factors, from the banal wear of the cable to the hidden firmware settings that can slow down the process.

It’s important to understand that slow charging isn’t always about battery failure. Often, software limitations, inappropriate adapters, or even background processes that steal power faster than it gets. We’ve compiled 10 working ways to speed up charging that will help owners of the new Xiaomi 14 and older models like the Redmi Note 8 Pro. Let’s start with the simplest solutions and get to the deepest settings.

If after reading the article the problem remains - at the end you will find a checklist for diagnosis and FAQ Do not rush to bring the phone to the service: 80% Slow charging can be corrected by yourself. 10-15 minute.

1.Check the cable and power adapter: the main "culprits" of slow charging

To start with, 90 percent of charging problems are due to faulty or inappropriate cable/adapter, and even if they look normal, the insides of the cable could be worn and the adapter could lose power due to voltage changes.

How to check:

• 🔌 Use the original adapter. Many users save money by buying cheap chargers on the back of the car. 5V/1And instead of the original on 18V/2.4A or 30V/3Xiaomi optimizes charging for its adapters – third-party may not give full power.
• 📱 Try another cable. Even if it's visually intact, micro-cracks on the veins cause the current to drop. USB-IF (The packaging must be marked appropriately).
• ⚡ Check the phone's connector. Garbage, oxidation, or bent contacts in the port. USB-C Clean the connector carefully with a toothpick (not metal objects!).

Pay special attention to adapters that support Quick Charge or Turbo Charge. 13T Pro supports charging on 120Watt, but only with the original adapter, if you plug it into charging on the 18The phone will charge in the 3-4 slower.

⚠️ Warning: Never use adapters with power higher than your phone supports. 9A It is designed for 10W, and you connect it to a 67W charge, this can lead to overheating and damage to the battery.

2. Turn off background processes and optimize power consumption

If the phone charges slowly even with the original adapter, the problem may be in the background, which consumes power faster than it comes in, especially for phones with a weak processor (for example, Redmi). 9A or POCO C31), Where even conventional applications can create a high load.

What to do:

• 🔄 Close all applications before charging. Even folded programs (e.g. Telegram, YouTube, games) continue to consume energy. Use the "Clear All" button in the multitasking menu.
• ⚙️ Turn on the power saving mode. Go to Settings. → Battery. → Power saving mode and select Balanced or Extreme. In the latter case, the phone will limit background activity.
• 📵 Turn off your mobile data and Wi-Fi while you're charging. Constant sync (mail, messengers, cloud services) slows things down. It's also helpful to put your phone in "On the plane" mode».
• 🔍 Check the auto-run of applications. Many programs (e.g. Facebook, TikTok) run automatically and consume power. Turn them off in Settings. → Annexes → Auto-start.

On new models (Xiaomi) 13/14, POCO F5) There is a function “Adaptive charging”, which artificially slows the charging to the 80%, If you need to charge your phone quickly, turn it off in Settings. → Battery → Battery settings.

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If the phone warms heavily while charging, remove the case - overheating automatically reduces the charging speed to protect the battery.

3. Update firmware: software bugs slow charging

Operating system MIUI (or HyperOS on new models) often contains errors that affect power management. MIUI 13 was a bug that caused Xiaomi phones 11T Charging was 30% slower when connected to some adapters. V13.0.15.0.

How to update firmware:

1. Go to Settings → About the phone → System update.
2. Click on “Check Updates” and wait for the search.
3. If you have an update, download it and install it. Importantly, charge your phone to at least 50 percent before you upgrade to avoid crashes.

If automatic updates don’t help, try manual firmware through MIUI bootloader or official Xiaomi website:

1. Download the firmware for your model (for example, the fastboot version for the Redmi Note 10 Pro).
2. Go to Settings. → About the phone and 7 times click on the "Version" MIUI», activate the developer mode.
3. Return to Settings → Additional → For developers and enable “Debugging by USB”.
4. Connect your phone to your PC and use the Mi Flash Tool to install the firmware.

⚠️ Warning: Hand-held firmware can cause data loss or “bricking” of the phone if the wrong version of the software is selected. Do this only if you are confident in your actions or follow official instructions Xiaomi.

4.Reset the battery settings and calibrate it

Over time, the system MIUI It can misrepresent the charge level or limit the charging current due to failures in the battery data, especially after prolonged use (1.5-2 year) or after firmware updates.

To reset the settings:

1. Go to Settings. → Battery.
2. Click on the three dots in the top right corner and select Reset Battery Settings.
3. Confirm action. The phone will reboot, and the charging cycle data will be zeroed.

If the reset didn’t help, try calibrating the battery:

1. Charge the phone before 100% And leave it on the charger for another 1-2 hour.
2. Disconnect from the network and discharge until automatically shut down.
3. Connect to the original adapter and charge up to 100% without interruption.
4. Repeat the cycle 2-3 This will help the battery controller to determine the actual level of charge.

On phones with HyperOS (such as Xiaomi 14) there is an optional “Battery Optimization” option in the Settings menu. → Battery. Turn it on, and the system automatically calibrates the battery in the background.

Charge your phone to 100% original adapter|Disable all background applications|Turn off the energy saving mode|Do not interrupt the discharge/charging cycle-->

5. Check the health of the battery: wear and degradation

If your Xiaomi is bigger 2 And in the years that we've been doing, it's very likely that the battery has lost some capacity. 300-500 The charge cycles are reduced by their capacity 20-30%, And the charging speed is dropping.

How to check the status of the battery:

• 📊 Use built-in diagnostics on new models (Xiaomi) 13/14, POCO F5) Go to Settings. → Battery → Battery status. The system will show current capacity as a percentage of the factory capacity.
• 🔧 Install the AccuBattery app (available on Google Play) that displays real wear, temperature and charging/discharge rate. Normal wear and tear up to 15-20%. If more 30%, rechargeable.
• ⚡ Pay attention to the time you're running. If the phone used to charge for a day, it's now running out of charge. 6-8 When used normally, it is a sign of degradation.

If the wear exceeds 30-40%, Replacing the battery is the only solution.The cost of the service in the service center Xiaomi:

• Redmi Note 10/11: ~1 500–2 000 ruble.
• Xiaomi 12/13: ~2 500–3 500 ruble.
• POCO F3/F4: ~2 000–2 800 ruble.

⚠️ Warning: Don't buy cheap batteries on AliExpress or in untested stores. Counterfeit batteries often have lower capacity and can swell or ignite. Use only original batteries or certified counterparts (e.g., from the original batteries). ZMI).

6.Problems with the port USB-C: cleaning and diagnosis

Contaminated or damaged connector USB-C — One of the most common causes of slow charging, is that dust, pocket pile, or contact oxidation impairs connection, which causes the phone to get less current.

How to clean the port:

• 🕯️ Use a wooden toothpick. Carefully, without pressing, remove the garbage from the connector. Do not use metal objects (needles, paper clips) - they can damage the contacts.
• 💨 Blow the port with compressed air. A compressed air canister (for example, to clean the keyboard) will help blow dust out of deep areas.
• 🔥 Treat the contacts with alcohol. Moisten the cotton swab in isopropyl alcohol (90%+) And clean the contacts inside the port carefully, and that will remove the oxidation.

If cleaning doesn’t work, check the port for physical damage:

• Bent contacts (often after a sloppy connection of the cable).
• A loose connector (the phone is charged only in a certain position of the cable).
• Cracks or cracks on the board (see in bright light).

In such cases, the port will need to be replaced.

• Redmi 9/10: ~1 000–1 500 ruble.
• Xiaomi 11/12: ~1 800–2 500 ruble.
• POCO X3/X4: ~1 200–1 800 ruble.

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If the phone charges in only one cable position or periodically disconnects from charging, it is 100% a sign of a port problem. USB-C.

7 Developer settings: Hidden charging options

There are several options in the Developer Menu that can affect charging speed, such as turning off charging optimization or limiting the background will cause the phone to charge more slowly.

How to turn on the developer mode:

1. Go to Settings. → The phone.
2. Find the line "Version" MIUI» And press it 7 times in a row.
3. Enter a pattern lock or password if required.

Now check the following settings:

• 🔋 Turn off "Background Limitation." Go to Settings. → Additionally. → For developers → Background Limitation and select "No Limitations».
• ⚡ Turn on "Fast Charging" (if there is one (POCO F1, Mi 9) This option is hidden in the developer.
• 📱 Reset the settings. USB. In the developer menu, find “Configuration” USB» Select “Charging” (if there is a different mode).

On HyperOS phones (such as Xiaomi 14), some charging options are moved to the main settings.

• Settings → Battery → Battery settings → Quick charging (must be enabled).
• Settings → Additionally. → Special facilities → Optimize charging (turn off if you need to speed up the process).

8. Alternative methods: what to do if nothing helps

If all of the above methods have failed, try the following solutions:

Charging in the off state

Sometimes the system MIUI It limits the charging current due to background processes. If you turn off the phone, it will charge on the phone. 20-30% To check it out:

• Turn off the phone.
• Connect to the original adapter.
• Leave for 30 minutes and compare the percentage of charge with the usual mode.

2.Use a different power source

Try charging your phone from:

• 🖥️ Computer or laptop (ports) USB 3.0 gives more current than USB 2.0).
• ⚡ Power Bank with Quick Charge support (e.g. Xiaomi Mi Power Bank 3).
• 🔌 Network filter from USB-Ports (some models support fast charging).

3. Check the phone for viruses

Some malware (e.g. mining bots) consumes the phone’s resources in the background, which slows down charging. Install antivirus (Dr.Web, Kaspersky) and scan the system.

4.Reset the phone to factory settings

If the problem occurs after you update or install apps, a reset can help. Important: back up your data before resetting!

1. Go to Settings → About Phone → Backup and Reset.
2. Select "Settings Reset."
3. Confirm the action and wait for the reboot.

5. Contact the service center

If nothing helps, the problem may be:

• Faulty power controller (motherboard replacement required).
• Damaged charging circuit (for example, after falling or getting moisture).
• Bloated battery (dangerous! immediately disconnect your phone from the grid).

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If the phone is warming up while charging and discharges quickly, it could be a sign of a short circuit on the board.

FAQ: Answers to Frequent Questions