Why Xiaomi Phone Takes a Long Time to Charge and How to Fix It: The Full 2026 Guide

You've connected a Xiaomi Redmi Note 12 or POCO X5 Pro to charge, but battery percentages are crawling like a turtle, and the indicator shows Charge for an hour? Slow charging is one of the most common problems with Xiaomi smartphones, and the causes can lie in both hardware malfunctions and software failures. In this article, we will analyze all the possible reasons why your Android phone is charging too long, and give specific solutions for each of them - from replacing the cable to hidden MIUI settings.

It's important to understand that if you used to charge a phone for 1.5 hours, and now it takes 4+ hours, that's not the norm. Even with the natural wear of the battery after 2-3 years of use, a drop in charging speed more than 2 times signals a problem. We analyzed service center data and user feedback to highlight the top-10 reasons for Xiaomi's slow charging, including rare cases that are not mentioned in standard instructions.

1. Problems with charger or cable

To start with the obvious, the power supply and the cable, and statistically, 40 percent of the time, slow charging is related to them, because Xiaomi uses Quick Charge technology (or similar HyperCharge in flagships), which requires a compatible charger, and if you plug your phone into left-hand 5W charging, it will charge 3-5 times slower.

How to check:

• 🔌 Try the original power supply that came with the phone, and even if it was outwardly working, the internal capacitors could have failed.
• 🔗 Replace cable. Cheap cables often have thin veins that can't withstand currents above 1A, causing charging speeds to drop.
• 📊 Install the AccuBattery app (available on Google Play) and check the actual charging power in Charging → History. If the value is lower than 10W when connecting to the network 220V, the problem is exactly in the charger.

Critical: In Xiaomi smartphones with HyperCharge support (such as the Mi 11 Ultra or Redmi Note 11 Pro+), using an unoriginal cable can not only slow the charging, but also damage the power controller. If the phone heats up more than usual after connecting, turn it off immediately!

Battery wear: how to check and what to do

The batteries in Xiaomi smartphones (as in any other) degrade over time, after 300-500 full charge cycles, their capacity decreases by 20-30%, and the charging speed decreases due to increased internal drag, especially in low-end models (Redmi 9A, POCO M3), where lower-quality batteries are used.

How to diagnose wear:

1. Go to Settings → Battery → Battery status (some firmware may have different paths: Settings → Phone → Battery status) If the capacity has dropped below 80% of the original battery needs to be replaced.
2. On the AccuBattery app, check out the Battery Health chart, below 80 percent is critical.
3. Pay attention to battery life. If the phone runs out in 3-4 hours with moderate use, and used to hold the day, this is a clear sign of wear and tear.

What to do:

• 🔋 If the capacity has dropped to 70-80% and the phone is still under warranty, contact Xiaomi's service center. They're required to replace the battery for free.
• 🛠️ For self-replacement, only buy original batteries labeled MB- (e.g., MB-11 for the Redmi Note 10).
• ⚡ After the battery is replaced, calibrate: completely discharge the phone, then charge to 100% without interruption.

3. overheating of the phone during charging

Xiaomi equips its smartphones with a system of protection against overheating, which automatically reduces the charging current if the temperature exceeds 40-45 ° C. This can happen for several reasons:

• 🔥 Charging in a hot room or under direct sunlight.
• 🎮 Simultaneous charging and intensive use (games, videos in 4K, software updates).
• 🛠️ Thermopaste malfunction between the processor and the radiator (relevant for flagships such as Xiaomi 13 Pro).
• 🔋 Bloating of the battery, which leads to poor heat sink.

How to solve the problem:

1. Charge your phone in a cool place, avoiding direct sunlight.
2. Don’t use your phone while charging for resource-intensive tasks, and even watching YouTube in high resolution can raise your temperature by 10-15°C.
3. Remove the case (especially silicone or thick) - it worsens heat transfer.
4. If the phone warms up even in plain, check the operation of the vents (they are in models with active cooling, for example, Black Shark).

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If the phone gets too hot while charging, don't try to cool it in the fridge!A sharp temperature drop can cause condensation inside the case. Instead, disconnect it from the mains and let it cool at room temperature.

4. Software failures and MIUI errors

Sometimes slow charging is not hardware-related, but MIUI firmware. This is especially true after upgrades when the system misidentifies the type of charger or restricts current due to errors in the core. For example, after upgrading to MIUI 14, many POCO F4 users complained about a drop in charging speed from 67W to 18W.

How to fix it:

• 🔄 Reboot your phone. Sometimes a simple reboot is enough to reset the power controller errors.
• 📱 Reset your battery settings: go to Settings → Applications → Application Management → Three dots (menu) → Reset application settings. This will remove the cache of the system services responsible for charging.
• 🔧 Turn on Developer Mode and activate Debugging on USB, then turn it off. This sometimes resets the charging restrictions (path: Settings → About Phone → Version MIUI – tap 7 times, then go back to Additional Settings → Developer).
• 🔄 If the problem has occurred after the update, try rolling back to the previous version MIUI via Settings → About Phone → System Update → Three Points → Select the Service Pack.

If nothing works, check the logs for errors.

adb logcat | grep -i "battery\|charger\|thermal"

In the logs, look for lines with errors such as charger voltage too low or thermal throttling.

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After resetting the battery settings, the phone can charge more slowly than usual for the first 2-3 cycles, which is normal.

5. Charging restrictions in MIUI settings

Xiaomi adds hidden and not-so-subtle features to its firmware that can artificially limit charging speeds. For example, some models (Redmi Note 11, POCO X4 Pro) have Smart Charging mode enabled by default, which slows charging after 80% to extend battery life, and there is a “Restrict Charging” option that can be activated accidentally.

Where to look for these settings:

Also check if the power saving mode is activated, which can be called differently in MIUI:

• Settings → Battery → Energy saving mode
• Settings → Battery → Super energy saving
• Settings → Additional → Special features → Saving charge

Turn off Smart Charging |Select Quick Charging mode |Check Power Saving mode |Reset battery settings-->

6. Problems with USB-C connector or power controller

If you've ruled out problems with the cable, the power supply and the battery, but the phone still charges slowly, it could be the USB-C connector or the power controller on the motherboard, which is one of the most frustrating reasons, because fixing it often requires repair.

Signs of a faulty connector:

• 🔌 Charging is interrupted at the slightest movement of the cable.
• 📱 The phone defines charging as “slow” even when connected to blocks on 30W+.
• 🔍 You can see debris, oxidation, or bent contacts in the connector.
• 🔋 When connected to a computer, the phone charges, but not from the socket.

What to do:

1. If there is any debris inside, carefully remove it with a wooden toothpick (not metal!).
2. Try connecting the cable in different positions – if charging is only at a certain angle, the connector needs to be replaced.
3. If the connector is externally clean, but the problem remains, contact the service. In Xiaomi workshops, the connector is replaced in 1-2 hours, the cost is from 1000 to 2500 rubles, depending on the model.

The power controller is a bigger problem, and it's responsible for distributing power between the battery and the components of the phone, and if it malfunctions, the phone can:

• Charge only when turned off.
• Show charging, but the percentage does not increase.
• Suddenly disconnect when connected to the network.

It's hard to diagnose a problem with the controller on your own -- you need a tester, and if all the previous methods didn't work, bring the phone to the service.

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Don't try to clean the connector with alcohol or liquids! This can cause corrosion of the contacts. Use only dry cleaning or compressed air.

7.Background processes and energy-consuming viruses

If the phone is actively using a processor or communication module (for example, to synchronize data) during charging, the charging speed can drop significantly, especially in models with weak processors (Redmi 8A, POCO C31), where background tasks eat up to 30% of the charging current.

How to find and eliminate “gluttonous” processes:

1. Open Settings → Battery → Battery usage and see which applications consume the most power. Pay attention to background consumption.
2. Launch Task Manager (hold the Home button or swipe up and hold) and close all unnecessary applications.
3. Check your phone for viruses with Malwarebytes or Dr.Web Light. Some malwares specifically load the processor to mine cryptocurrency.
4. Turn off automatic sync for unnecessary accounts: Settings → Accounts → Sync.

Also note:

• 📶 Continuously active mobile internet (especially in low signal area).
• 📍 Operate GPS in the background (disable geolocation for unnecessary applications).
• 🔄 Auto-update apps in Google Play (disabled in store settings).

Radar-list of the most voracious applications that can slow down charging:

• 🎮 Games: Genshin Impact, PUBG Mobile, Call of Duty.
• 📺 Streaming services: YouTube (especially in 4K), Twitch, Netflix.
• 📱 Social Media: TikTok, Instagram (due to background content downloads).
• 🔍 Applications with constant synchronization: Telegram, WhatsApp, Gmail.

8. Failure of the motherboard or firmware

If all previous methods failed, the problem could be a hardware malfunction of the motherboard or a damaged firmware, which is the most difficult case, and their diagnosis requires professional skills.

Signs of problems with the motherboard:

• 🔌 The phone does not charge from any charger, but determines the connection of the cable.
• 🔋 The percentage of charge jumps (e.g., from 50% to 1% at once).
• 📱 The phone turns off when connected to a charger.
• 🔥 Strong heating of the housing even when switched off.

What to do:

1. Try flashing your phone through Fastboot or Recovery. The official firmware for Xiaomi can be downloaded at en.miui.com.
2. If the firmware doesn't work, check the short circuit board, and you need a multimeter and thermovisor diagnostics in the service.
3. In extreme cases, you may need to replace the PMIC (Power Controller) or even the entire motherboard.

Cost of repair:

⚠️ Warning: If you don't have experience with soldering BGA- chips, don't try to repair the motherboard yourself. Wrong actions can put the phone out of order completely.

FAQ: Answers to Frequent Questions