Fast charging on Xiaomi Redmi 8 Pro: how to speed up the process without harming the battery

Xiaomi Redmi 8 Pro is a popular smartphone with a capacious battery of 5000 mAh, but standard charging power of 18 watts does not always suit users. Especially when you need to urgently restore charge before leaving. In this article, we will discuss all possible ways to speed up charging, from software settings to hardware modifications, and explain why some “tips” from the Internet can reduce battery life by 30-40% with regular use.

It's important to understand that the Redmi 8 Pro doesn't support ultrafast charging (like the flagships with 67W or 120W), but even within 18W, you can optimize the process. We've tested all methods in practice and weeded out those that have minimal effect or damage to the device. If you're willing to sacrifice durability for speed, we'll warn you of the risks in advance.

1. Checking the current charging speed: baseline

Before you try to speed up charging, you need to understand how fast it's happening right now.

• 📱 Install the AccuBattery app (free in Play Market) and it shows real-time charging current.
• ⚡ Connect the original charger and cable, run the application on the Charging tab.
• 📊 Normal performance for the Redmi 8 Pro: 1.5–2.0 A at 9 V (power) ~18W) If the numbers are lower, there is a problem with the charger or cable.

If your smartphone is charging at 0.5-1.0 A, it's a malfunction signal.

• 🔌 Unoriginal cable (especially cheap "no-name" with thin veins).
• 🔋 Worn-out battery (after 500 charging cycles, the capacity drops by 20-30%).
• 📵 Background processes (e.g., application updates or active synchronization).

2. Optimization of software settings to accelerate charging

The safest way to speed up charging is to reduce the load on the processor and battery while connecting to the network.

1. Activate the aircraft mode (Settings → Connections → Airplane Mode) This turns off Wi-Fi, Bluetooth, GPS and mobile network modules, which consume energy even while charging.
2. Turn off background activity: 🚫 Go to Settings. → Annexes → Permits → Auto-start and disable unnecessary programs. 🔄 B Settings → Battery → Battery Optimization Select All Apps and Enable Optimization for Messengers and Social Media.

Lower the brightness of the screen

Dark subject.

Settings → Display

AMOLED-screen

Redmi 8 Pro

These measures speed up charging by 15-25% (from 2 to 2.3-2.5 hours to 100%).

Hardware methods: chargers and cables

The original Xiaomi kit (18W) doesn’t always deliver top speeds. If you want to speed up charging, look out for:

The best option for the Redmi 8 Pro is a charger with Quick Charge 3.0/4.0 or Power Delivery (PD) support, which automatically adjusts to the maximum allowable power of the smartphone.

⚠️ Note: Chargers over 33W will not increase speed but may cause the power controller to overheat. Redmi 8 Pro does not physically support charging above 18-20W.

Just as important is the cable.

• 🔌 USB Type-C → Type-C (not Micro-USB!).
• 📏 Length not exceeding 1 meter (long cables lose up to 30% of power).
• 🛡️ Certification USB-IF (The logo should be on the packaging).

💡

If your cable is warming up while charging, it’s a sign of poor copper quality in your veins, and replace it with a USB 3.1 model (like Baseus Braided or Anker PowerLine+).

4. Acceleration of charging through the engineering menu (for advanced)

The Redmi 8 Pro has hidden settings to slightly increase the charging current, a method that requires caution – incorrect actions can lead to resetting or overheating.

Instructions:

1. Open the phone app and enter the combination: ##4636##
2. Go to the section Information about the battery.
3. Look at the current values of charge level, voltage and temperature.
4. Return to the main menu and select Battery Settings (if the partition is missing, your firmware does not support this feature).
5. Activate the Quick Charging option (if it is disabled).

After activation, check the charging speed in AccuBattery. Usually, the increase is 5-15%, but:

⚠️ Warning: If the battery temperature exceeds 40°C, the controller will automatically reduce the current. To avoid overheating, remove the case and do not use the smartphone while charging.

5. Myths about fast charging: what really hurts the battery

There are a lot of tips on the Internet that not only do not speed up charging, but also shorten the battery life.

• ❌ "Charge your smartphone off" → In practice, the Redmi 8 Pro charges more slowly when turned off (current drops to 1.0–1.2A).
• ❌ "Use a charge from a laptop (65-90 watts)" → Smartphone controller will limit power to 18 watts, and the risk of overheating the cable will increase.
• ❌ "Keep the charge at 40-80%" → This extends the life of the battery, but does not affect the charging speed.
• ❌ "Cool your smartphone in the fridge" → A sudden temperature drop destroys lithium-polymer cells. Tolerable range: 10-35°C.

The only proven way to extend the life of the battery when charged fast is to prevent overheating.

• 🌡️ Keep an eye on the temperature in AccuBattery (optimum: 25-35)°C).
• ☀️ Do not charge your smartphone under direct sunlight.
• 🔋 Avoid playing or watching video while charging (processor load increases temperature).

💡

Fast charging reduces battery life by 10 to 15 percent per year for daily use, and if your smartphone lasts less than 12 months, you should not risk hardware modifications.

6.Alternative methods: wireless charging and power bank

The Redmi 8 Pro doesn't support wireless charging out of the box, but it can be added with a receiver adapter (like the Nillkin Magic Tag).

Wireless charging is 2 times slower, but convenient in some scenarios (e.g., desktop).

• 🔌 Use a charging station with support for Qi 1.2 (for example, Xiaomi Wireless Charging Pad).
• 📍 Position your smartphone strictly in the center of the coil.
• 🔋 Remove the cover (even thin increases the distance between the coils).

Another option is a power bank with Quick Charge support, such as the Xiaomi Mi Power Bank 3 Pro (30W) charging the Redmi 8 Pro 20% faster than a standard power supply.

Extreme measures: battery replacement and firmware

If all methods have been tried and charging is still slow, the cause may be a worn-out battery or software limitations.

The battery replacement will cost 1500-2500 rubles (depending on the service center).The original battery for the Redmi 8 Pro has the article MBJ4067.

• 🔧 Use only original or certified batteries (e.g., from the ZMI or Baseus).
• 🛠️ Replacement is better to trust professionals - with improper installation, swelling or short circuit is possible.
• 🔄 After replacement, perform battery calibration: completely discharge the smartphone, then charge to 100% without interruptions.

The firmware can help if the problem is in the software, for example, in some versions of MIUI, the charging speed is artificially limited.

1. Go to Settings → About the phone → System update.
2. If a new version is available, download it and install it.
3. For manual firmware, download the official ROM from Xiaomi’s website and run through Fastboot or Recovery.

⚠️ Attention: Fastboot Firmware resets all data! pre-backup to Settings → Additionally. → Backup.

FAQ: Frequent questions about charging the Redmi 8 Pro