How to make fast charging on Xiaomi Redmi 8 Pro: from settings to selecting ROM

Xiaomi Redmi 8 Pro is a popular smartphone with a capacious battery of 4500 mAh, but many users are faced with slow charging. Even with the original charger, the process can take 2.5-3 hours. In this article, we will analyze all the ways to speed up charging, from turning on hidden MIUI functions to choosing the optimal charger and cable.

It’s important to understand that the Redmi 8 Pro officially supports fast 18W charging, but by default it can be disabled or limited by the system. We tested all methods on MIUI 12-14 firmware and found the most effective ones. If your phone charges too long, follow the instructions below, but first check for the 4 key factors that affect speed.

1. Checking the current charging speed: how to measure and what is considered the norm

Before you optimize charging, you need to understand how slow it is. Use the AccuBattery app (free on Google Play), which shows current (mA) and power (W) in real time. Normal values for the Redmi 8 Pro:

• 🔌 Original Zoo 18W: 15–18W (2.5–3A) in the first 30-40% of charging, then decrease to 10–12W.
• ⚡ Charging from another device (5W): 5–7W (1–1.5A) — That's 2-3 times slower!
• 📉 Critical current drop: if power is lower 3W, check the cable or port USB.

If your scores are below normal, the problem may be:

• 🔋 Charger (insufficient power or malfunction).
• 🔌 Cable (damaged veins or poor quality).
• 📱 porte USB telephone (pollution or mechanical damage).
• ⚙️ Settings MIUI (default-off).

For an accurate test, connect your phone to charge and run AccuBattery → Charging → Power Graph. If the power doesn’t rise above 10W in the first 10 minutes, move to the next section.

2. Enabling fast charging in MIUI settings

Xiaomi often hides fast charging options in the depths of the menu. In Redmi 8 Pro, this feature can be disabled by default or limited to power saving mode.

1. Open the Settings. → Battery.
2. Tap on. ⚡ Lightning icon in the upper right corner (or battery settings) → Fast charging).
3. Activate the switch to Enable fast charging.
4. If you don’t have an option, check Settings → Additional → Special features → Optimize charging and turn it off.

Some MIUI 13+ firmware may have different paths. If you don't find a point, search by settings (the magnifier icon at the top) and type "fast charge" in.

Is fast charging activated in the battery settings?

Is the energy saving mode off?

Are hidden settings checked through search?

Has the firmware been updated to the latest version?

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Important: Reboot your phone after the function is turned on, sometimes changes are only applied after the reboot, and also make sure that the battery temperature does not exceed 35 ° C - when the system overheats, the current automatically decreases.

⚠️ If after activating fast charging, the phone begins to warm up more than 40°C, turn it off and check the charger. Prolonged overheating shortens battery life.

3. Charger choice: which RAMs are suitable for the Redmi 8 Pro

The Redmi 8 Pro supports Quick Charge 3.0, but not all chargers with this label will work correctly. We tested 10 models of RAM and compiled a compatibility table:

Selection recommendations:

• 🔹 The best option: the original ZU Xiaomi 18W or Baseus 30W (if you need a power reserve).
• 🔹 Budget pick: Samsung EP-TA200 (15W), But the speed will be 10 to 15 percent lower.
• 🔹 What to avoid: Cheap no-name RAM without support QC 3.0/PD — They are not only slow, but also dangerous for the battery.

The critical point is, if you're using RAM above 18W (like 30W or 65W), the phone will still charge at a maximum of 18W, which is a hardware limitation, but future-proof RAMs can be used for other devices.

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If you don't have the original RAM, check it for compatibility with the Ampere app (showing real current).If the current doesn't go above 1.5A, the ROM doesn't support fast charging.

4.Cable Matters: How to Choose the Right USB-C

Even the most powerful charger is useless if the cable does not support high current. For the Redmi 8 Pro, you need a cable with:

• 🔌 Standard USB-C → USB-C (or USB-A → USB-C supportive QC 3.0).
• 📏 No more than 1 meter long (long cables lose up to 30% of power).
• 🔍 At least 24 people lived thick. AWG (thin cables warm and limit current).

How to check the cable:

1. Connect the phone to the RAM via the tested cable.
2. Run AccuBattery and look at the power chart.
3. If the power drops below 12W at 30% charge, the cable is faulty or of poor quality.

Top.-3 Checked cables for Redmi 8 Pro:

1. The original Xiaomi USB-C (complete with phone)
2. Baseus Braided USB-C (24 AWG, supports 30W)
3. Anker PowerLine III (Reinforced Flying, 60W)

⚠️ Warning: Never use cables with damaged insulation or bent connectors, which can short-circuit and cause the phone's power controller to fail.

5. Optimization of software settings for maximum speed

Even with the right RAM and cable, MIUI can artificially limit charging to remove unnecessary restrictions.

• 📵 Turn off the power saving mode: Settings → Battery → Energy saving regime → Off.
• 🔄 Reset the battery settings: Settings → Battery → ⋮ (menu) → Resetting battery statistics.
• 🚫 Close the background applications: use Settings → Annexes → Auto-start and disable unnecessary programs.
• 🔧 Turn off optimization. MIUI (Adb shell settings put global settings hidden_api_policy 1 Then in Settings → For developers, activate Disable Optimization MIUI.

Also check if the “Charge Limit to 80%” function is enabled (sometimes activated after updates).Way: Settings → Battery → Battery settings → Charging Limit.

Extreme method (only if nothing works): reset your phone to factory settings. Sometimes system errors after updates block fast charging. Remember to back up!

Physical factors: Temperature, USB port and battery

The charging speed depends not only on the software and the hardware, but also on the external conditions.

• 🌡️ Temperature: optimal range - 15-35°C. At 0°C or 45°C charging slows down 2-3 times.
• 🔌 Port port USB: A contaminated connector may not make good contact, clean it with a toothpick (carefully!) or compressed air.
• 🔋 Battery status: If the capacity falls below 80% of the original, the charging speed decreases. → Battery health.

If the phone is warming up while charging:

1. Remove the cover (especially silicone).
2. Charge in a ventilated place, away from direct sunlight.
3. Do not use your phone for games or videos while charging.

Critical information: if the battery is swollen (visible on a raised screen or case), immediately stop using the phone!

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Ideal conditions for fast charging: temperature 20-25 ° C, original 18W RAM, USB-C 24 AWG cable, power saving mode turned off and closed background applications.

7. Alternative methods of accelerating charging (with caution!)

If standard methods do not help, you can try non-obvious solutions, but they have risks:

• 🔄 Firmware reflashing to custom software (like LineageOS) Some firmware removes Xiaomi's charging restrictions, but it takes away the warranty.
• 🔋 Battery replacement: If the capacity has dropped below 70%, the new battery will return its original speed. Cost: 1500-2500 ₽.
• ⚡ Using Power Bank with the QC 3.0: Some external batteries (e.g. Xiaomi Mi Power Bank 3 Pro) provide more stable current than network RAM.

Warning: Flashing or replacing the battery by an inexperienced wizard can lead to:

• Data loss.
• Sensor or camera failure.
• Fire hazard (if the battery is installed incorrectly).

If you are unsure of your skills, contact Xiaomi’s service center, and it will cost less to replace your battery than to repair it after a failed experiment.

FAQ: Frequent questions about charging the Redmi 8 Pro