Why Xiaomi Redmi 10 is charging for hours: diagnosis and fixing problems

Introduction: When the “fast” charging stops being fast

Are you used to the Xiaomi Redmi 10 charging in 1.5-2 hours, but suddenly the process took 4-5 hours? or the phone refuses to gain interest above 80%? The problem of slow charging is one of the most common among owners of budget Xiaomi smartphones, and the reasons can lie in hardware malfunctions and software failures.

In this article, we’ll look at 7 key reasons why the Redmi 10 (including the Redmi 10 Prime, Redmi 10A and Redmi 10C) has been charging longer than usual, and give step-by-step instructions for diagnosing and fixing the problem, from simple (checking the cable) to complex (replacing the battery) – without excess water and template tips.

Importantly, if your phone only charges when the screen is off or if the charger doesn't recognize the charger at all, it can be a symptom of a critical malfunction, and these cases require separate analysis, and we'll touch on them, too.

1. Problems with charger or cable

To start with, 90 percent of slow charging is due to a faulty charger, cable, or socket, and even if everything looks normal, microcracks in the wire or contact oxidation can reduce current to 0.5-1 A instead of the standard 2-2.25 A for the Redmi 10.

How to check:

• 🔌 Connect your phone to another charger (preferably the original one from Xiaomi at 18-22.5W). If the charging speed has increased, the charger is a problem.
• 📱 Try another cable, especially if yours has signs of wear (curves, bare wires). USB-C cables often break at the base of the connector.
• 🔋 Connect the charger to another socket or use it USB-If you charge faster, it's the power outlet or the filter.

Tip: Avoid cheap no-name chargers with AliExpress. They often don’t match the declared power and can damage the phone’s power controller. Xiaomi’s original chargers are labeled as MDY-11-ED (18 watts) or MDY-12-ED (22.5 watts).

⚠️ Warning: If the phone gets hot when charging (especially in the camera area), turn it off immediately.This could be a sign of a short circuit in the battery or power controller.

Battery wear: how to check and what to do

Redmi 10 is equipped with a lithium-polymer battery capacity of 5000 mAh, which eventually degrades. After 300-500 charging cycles (about 1.5-2 years of active use), the capacity can fall by 20-30%, and the charging speed can decrease by 2-3 times.

How to find out the status of the battery:

1. Enter the code ##4636## → select Battery Information.
2. Look at Battery Health, if it's below 80%, the battery needs to be replaced.
3. Use apps like AccuBattery (Play Market) for detailed diagnostics.

Signs of a worn-out battery:

• 🔋 The phone is discharged in 3-4 hours with moderate use.
• ⚡ Charging stops at 80-90% and does not go further.
• 🌡️ The battery is very warm even with a simple charge.

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If you notice that the Redmi 10 battery is swelling (the phone body has become convex), DO NOT try to charge it further.

3. Software failures: why the software slows down charging

Sometimes slow charging is not due to hardware, but to firmware errors or background processes, for example, if a system is constantly synchronizing data or updating applications, some of the energy is spent on this, rather than charging.

What to check:

• 📱 Update. MIUI Up to the latest version: Settings → The phone. → Updating the system.
• 🔄 Reset the battery settings: Settings → Battery → ⚙️ → Reset the settings.
• 🚫 Turn off charging optimization (if enabled): Settings → Battery → Optimizing battery charging.
• 🛑 Close background applications, especially instant messengers and games. They can consume up to 1-1.5 A of current.

If the problem has occurred after the MIUI update, try rolling back to the previous version or resetting to factory settings (don’t forget to save the data!).

⚠️ Warning: If after resetting the phone stopped charging at all, this may be a sign of damage to the connector USB-C Or the power controller, and then only the service center will help.

4. Damage to the USB-C connector or power controller

The USB-C connector in Redmi 10 is one of the most vulnerable places, and over time it will loosen, oxidize or clog with dust, leading to unstable contact and slow charging, and the problem may lie in the power controller, the chip that regulates the charging current.

Signs of a faulty connector:

• 🔌 Cable "falls out" at the slightest movement of the phone.
• ⚡ Charging is only in a certain position (for example, if you hold the phone at an angle).
• 📵 The phone does not recognize the charger, but is charged from the computer.

What to do:

1. Examine the connector for dust, dirt, or oxidation. Clean it with a wooden toothpick (not metal objects!).
2. Try to connect the cable upside down - sometimes the contacts wear out unevenly.
3. If the connector is wobbly, it can be soldered (soldling skills are required) or replaced in a service center.

Cost of repair:

• 🔧 Replacement of the connector USB-C: 800–1500 ₽.
• 🔧 Repair/replacement of the power controller: 2000–3500 ₽ (model-wise).

5. Effect of temperature on charging speed

Xiaomi Redmi 10 automatically reduces the charging current if the battery temperature goes beyond 10–45 ° C. This is protection against overheating, but it can also be the cause of slow charging.

What to do:

• 🌡️ Do not charge your phone in the sun or near heat sources (battery, heater).
• ❄️ If your phone overheats, let it cool for 10-15 minutes before charging.
• 📱 Remove the cover - it can block the heat sink.
• 🔋 Avoid heavy use (games, video calls) while charging.

How to check the temperature:

1. Install the AIDA64 (Play Market) app.
2. Go to the Sensors section.
3. Look at the battery temperature. If it's above 40°C, it'll charge slower.

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The optimal temperature for charging Redmi 10 is 15-35 ° C. At 0 ° C, the phone may not charge at all, and at 50 ° C it will automatically turn off.

6.Use of incompatible accessories

Many Redmi 10 users are facing slow charging due to incompatible accessories:

• 🔌 Wireless charging. Redmi 10 doesn't support Qi charging out of the box. Even if you use an adapter, the speed will be 3-5 times lower.
• 📱 Power Bank is low power. If the external battery is less than 2 A, charging will be very slow.
• 🔋 Cables without fast charging support. USB 2.0 cables are limited to 0.5A.

Recommendations:

• Use only USB-C 2.0/3.0 cables and 18W chargers.
• For Redmi 10, the original chargers from Xiaomi, Baseus, Anker or Samsung (with Quick Charge 3.0 support) will be suitable.
• Avoid “smart” sockets or extension cords with USB-Ports – They often limit the current.

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If you charge your phone frequently from a power bank, choose models that support PD (Power Delivery) or Quick Charge 3.0, such as the Xiaomi Mi Power Bank 3 Pro (30W).

7. Hidden MIUI settings that slow charging

There are a few hidden features in MIUI firmware that can artificially limit charging speeds, often enabled to “prolong battery life,” but they also cause slow charging.

What settings to check:

1. Battery Charging Optimization: Settings → Battery → Battery Charging Optimization → Disable This feature limits charging to 80% after 23:00.
2. Power saving mode: Settings → Battery → Power saving mode → Turn off In this mode, the phone limits the background processes, but charging is slower.
3. Application Background Activity: Settings → Applications → Permissions → Auto Run Disable Auto Run for Unneeded Applications (especially Messengers and Social Networks).

It is also worth checking the developer’s mode:

1. Activate it: Settings → About Phone → MIUI version (click 7 times).
2. Go to Settings → Additional → For developers.
3. Find the item Do not turn off the screen while charging and turn it on (this will help track the process).

⚠️ Note: If you have turned on the debugging USB In developer mode, disable it after diagnosis. This feature may conflict with some fast-charging protocols.

Frequently Asked Questions (FAQ)