Xiaomi phone has become a long charge: the reasons and what to do

Have you noticed that your Xiaomi smartphone charges longer than usual? Instead of the usual 1-2 hours, the process stretches by 4-5 or more? This is a common problem that can occur on new models (Redmi Note 13 Pro+, Xiaomi 14 Ultra) and older devices (Poco X3, Redmi 9A). In most cases, slow charging is not associated with a breakdown, it is caused by software failures, incorrect settings or wear of components.

In this article, we’ll look at all the possible reasons Xiaomi can charge for a long time, from the banal contamination of the connector to the hidden MIUI functions that limit current. You will receive step-by-step instructions on diagnosis and fixing the problem, and also learn when to contact the service center. Don’t rush to buy a new battery or charger: in 80% of cases, you can solve the problem yourself in 10-15 minutes.

1.Check the charger and cable

The first thing you need to do is to make sure that the power supply or the cable is not faulty, and even if you're using the original Xiaomi kit, over time, the contacts oxidize and the wires are rubbed.

• 🔌 Try another charger. Best of all, the original one from Xiaomi with Quick Charge support. 3.0/4.0 (For new models, or Fast Charge, if the charging speed has increased, the power supply is the problem.
• 🔗 Replace the cable. Use a certified cable. USB-C cable (for modern Xiaomi) or micro-USB (for older models) cheap cables often do not support high currents.
• 📱 Check charging on another device.If the other phone is charging fast and your Xiaomi isn't, the problem isn't charging.

Note the power of the charger. For modern Xiaomi smartphones (such as the Xiaomi 13T or Redmi Note 12 Pro+), it is recommended to use power supplies from 33W and above. If you connect the phone to a weak adapter (5W or 10W), it will charge 3-5 times slower.

2. Clean the charging connector from dust and debris

A contaminated USB-C or Micro-USB connector is one of the most common causes of slow charging, and dust, pocket pile, or contact oxidation impairs the connection, causing the phone to get less current.

Make sure the phone is turned off.

Use a wooden toothpick or plastic spatula

Carefully remove visible debris

Blow the connector with compressed air (balloon).

Do not use metal objects!-->

Attention! Do not use needles, paper clips or other metal objects to clean, because they can damage or close the contacts, and if the garbage is deep inside the connector, you should contact the service.

After cleaning, check if the charging has improved. If not, try to move the cable slightly in the connector while charging. If the speed changes, then the contact is still poor, and the connector needs to be cleaned deeper or replaced.

3. disable functions that slow down charging

There are hidden settings in MIUI firmware that can artificially limit charging speeds, which is designed to protect the battery, but sometimes it doesn't work properly.

• 🔋 Optimized charging. Go to Settings. → Battery → Battery settings and disable Optimized Charging. It limits the charge to 80-90% battery-life extension.
• 🌡️ Temperature control if the phone overheats, MIUI Automatically reduces current. Check the temperature in Settings → Battery → Battery status. Up to 40.°C.
• 📵 Power saving mode. In Settings → Battery → Power saving mode disable all restrictions if they are active.

Important! Some Xiaomi models (like the Redmi Note 11 Pro+ or Xiaomi 12T) have a hidden Smart Charging feature that turns on automatically at night, which slows charging down to 100% to protect the battery, and to turn it off, you need to enter the code ##4636### in the engineering menu, go to the Battery Information and reset the settings.

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If after turning off optimized charging, the phone began to warm up stronger, return the setting back - this is a sign of battery wear.

4. Check the status of the battery

Over time, the battery capacity decreases and the phone starts to charge more slowly, especially on devices older than 2 years.

1. Open Settings → Battery → Battery status.
2. Look at Capacity or Wear, and if the capacity has dropped below 80 percent of the original capacity, the battery needs to be replaced.
3. Use apps like AccuBattery (available on Google Play) for detailed diagnostics.

If the battery wears more than 20-25%, it’s time to change it. On new Xiaomi models (such as the Xiaomi 14 or Redmi K60), the battery can be replaced by itself, but this will require special glue and tools. On older devices (such as the Redmi 4X), the battery is removable, and replacing will not cause problems.

5. Update MIUI firmware

Sometimes slow charging is due to software bugs in firmware. Xiaomi regularly releases updates that fix power management issues. MIUI:

1. Go to Settings → About the phone → System update.
2. Click Check for updates.
3. If a new version is available, download and install it.

If the update didn't work, try resetting to factory settings.

1. Make a backup copy of the data.
2. Go to Settings → About the phone → Reset settings.
3. Select Reset all settings (does not delete files) or Delete all data (complete reset).

Attention! After the reset, all data will be deleted, including photos, messages and installed applications, and save important information to the Mi Cloud or to your computer.

6. Check the phone for viruses and background processes

Viruses or resource-intensive applications can load the processor, which makes the phone warm and charge slower.

• 🛡️ Run the antivirus. Use Mi Security (built-in) MIUI) or third-party applications like Malwarebytes.
• 📊 Check battery consumption. Go to Settings. → Battery → Battery usage and see which applications consume the most energy.
• ⚙️ Turn off the autoload of unnecessary applications. → Annexes → Autorun disable programs that don’t need to run in the background.

Pay particular attention to cryptocurrency mining applications, high-demand games (Genshin Impact, Call of Duty Mobile) and screen recording software, which put a lot of CPU load on them, causing overheating and slowing charging.

7.Check the charging port on the phone and power supply

If the connector on your phone or charger is damaged, it can cause slow charging.

• 🔍 Look at the jack on your phone. It shouldn't be loose, bent, or oxidized.
• 🔌 Check the port on the power supply. Sometimes the contacts inside the adapter burn up, and it stops giving full power.
• 🔄 Try charging your phone in a different mode, for example, if you're using wireless charging, switch to wired charging, and vice versa.

If the port on the phone is damaged, it can be replaced at the service center. The cost of repairing the USB-C connector on Xiaomi is usually 1000-2500 rubles, depending on the model.

8.When to contact the service center

If you’ve tried all the ways but the Xiaomi phone still charges too long, it may be a hardware fault.

• ⚡ Charging is only in a certain position of the cable - this is a sign of damage to the connector or contacts on the board.
• 🔥 Phone warms up strongly even without load - possibly a faulty power controller.
• 📉 Battery capacity falls below 70% – battery is worn out and needs replacement.
• ⚠️ The phone doesn’t charge at all or shows an error – it could be a firmware failure or damage to the motherboard.

In official Xiaomi service centers, diagnostics are usually free and repairs are cheaper than in third-party workshops.

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If the phone is warranty, do not try to repair it yourself - this will void the warranty obligations.

FAQ: Frequent questions about Xiaomi's slow charging