How long to charge Xiaomi Redmi Note 8 Pro: full guide 2026

The Xiaomi Redmi Note 8 Pro remains one of the most popular mid-range smartphones even years after its release. Its powerful MediaTek Helio G90T processor, gaming display and capacious 4500 mAh battery attract users, but the question of charging time is often controversial. On the Internet, you can find data from “1.5 hours” to “3+ hours” – why is this scattering? It all depends on the type of charger, battery status and even ambient temperature.

In this article, we will discuss:

✅ Xiaomi’s Official Charging Time Data (and Why They Don’t Always Meet Reality).

✅ Like fast charging. 18W It affects speed and why it sometimes works slower.

✅ Comparison with competitors (Samsung Galaxy) A50, Realme 5 Pro) by charging time.

✅ Real-life tests from users with different chargers (including Power Bank and wireless charging).

✅ Tips on how to speed up charging and extend the life of the battery.

If you want to know how long it will take to charge your Redmi Note 8 Pro from 0% to 100% in your conditions, read on. We have gathered data from lab tests, user feedback and technical documentation to give the most accurate answer.

Xiaomi Official Data: What Does the Manufacturer Promise?

According to the specifications on Xiaomi’s website, the Redmi Note 8 Pro supports fast 18W charging (Quick Charge 3.0).The manufacturer claims that the smartphone charges up to 50% in 30 minutes and up to 100% in 2 hours using the original charger.

• 🔋 The original ZU is used. 18W (complete 10W, Many users are unaware of the possibility of speeding up).
• 🌡️ Air temperature - 20-25°C (in heat or cold, speed drops).
• 📵 The phone is off or in airplane mode (background processes slow down charging).
• 🔄 New battery (after 300-500 cycles capacity is reduced by 15-20%).

In reality, users often find that charging takes 2.5-3 hours. Why is this happening? Xiaomi uses a stepped charging system:

⚠️ Warning: After 80%, the charging speed automatically decreases to protect the battery from overheating.This can add up to 40-50 minutes to total time.

So even with the original 18W RAM, it takes about 2 hours and 10 minutes to fully charge — but only under ideal conditions. If you use the standard 10W RAM from the kit, the time increases to 3 to 3.5 hours.

2.Real Tests: How Much Does the Redmi Note 8 Pro Charge In Practice?

To verify Xiaomi’s claims, we analyzed data from 150+ users (forum reviews, YouTube videos, blogger tests) and the results were mixed:

• 🔌 Original 18W ZU: 1h 50min – 2h 20min (0% to 100%).
• ⚡ Zoo from the iPhone (5W): 4h 10min - 4h 40min.
• 🔋 Power Bank 20,000 mAh (18W output: 2h 30min – 3h (depending on model).
• 📶 Wireless charging (10W): 3h 30min – 4h (if supported by an adapter).

Interesting fact: some users have noted that after the update MIUI before version 12.5+ The charging speed has decreased a little bit, and this is due to optimizing power consumption, which limits the maximum current in the last stages. USB-port – if it is contaminated or damaged, contact deteriorates and charging is slower.

For clarity, we will compare with competitors (tests were conducted in the same conditions - room temperature, original memory):

The Redmi Note 8 Pro is losing the Realme 5 Pro in speed due to VOOC technology, which distributes current more efficiently. However, Xiaomi has the advantage of having a larger battery capacity, which compensates for longer charging.

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Even with the original 18W RAM, full charging takes ~2 hours 10 minutes. Using non-original charging increases the time by 30-100%.

3.Why is the Redmi Note 8 Pro charging slowly? 7 reasons and solutions

If your smartphone is charging for more than 2.5 hours, this is a good way to check out a few key points: Here are the most common reasons for slow charging and how to fix them:

1. A non-original or weak charger: 5W memory (e.g. from older iPhones) only delivers 1A, which is 2-3 times slower than 18W. Solution: buy the original Xiaomi 18W RAM (MDY-11-ED) or a certified counterpart (e.g. from Baseus or Anker).
2. A damaged USB cable. Over time, the wires inside the cable are rubbed, especially at the base of the connector. Check the cable on the curves - if it sags, replace it. Optimal choice: USB-C cable with 3A support.
3. A contaminated USB-C connector. Dust, pile, or contact oxidation increase resistance. Clean the connector with a plastic toothpick (not metal!) and blow it with compressed air. Use alcohol wipes to remove oxidation.
4. Active phone use while charging: Games, 4K video or app updates consume up to 5-7W, which reduces net charging speed, so you can either turn the phone into airplane mode or turn it off.
5. High or low temperature: At t < 10°C or t > 35°C, the battery controller limits the current. Charge the smartphone in a room with a temperature of 15–30°C.
6. Battery wear. After 500 charging cycles, battery capacity drops by 20 to 30 percent. Check the wear through the AccuBattery app (available on Google Play). If the capacity is < 3,500 mAh, it's time to consider replacing.
7. Software limitations MIUI. In Battery settings → Charging modes can be enabled "Sparing mode", which limits current. Turn it off for acceleration.

⚠️ Note: If the smartphone does not charge at all (even when changing the cable and RAM), the problem may be in the power controller or connector. USB-C. In this case, a diagnosis is required in the service center.

Are you using the original ZU? 18W?|Clean connector USB-C?|Cable intact?|The phone doesn't overheat?|Is the sparing mode offline? MIUI?-->

How to speed up charging Redmi Note 8 Pro: 5 working ways

If you want to reduce your charging time, use these tips to reduce your charging time by 20 to 40 minutes (depending on the baseline):

• ⚡ Use RAM with Quick Charge 3.0 support. Even if you don’t have the original RAM from Xiaomi, any certified device with a Quick Charge 3.0 support will do. 18W (For example, from Samsung, OnePlus or Google, the main thing is that it supports the company. QC 3.0.
• 📵 Turn on the plane mode. It shuts down the mobile network, Wi-Fi, Bluetooth and GPS, It's going to be 30 to 40 percent less energy, and it's going to be much faster.
• 🔄 Turn off the phone completely. When it's off, it charges 15-20 percent faster because it doesn't waste energy on the system.
• 🧊 Cool your phone before charging. If your smartphone gets hot (like after games), let it cool for 10-15 minutes. The battery controller will allow more current on the cold battery.
• 🔋 Charge to 80 percent and turn it off. The last 20 percent charge the slowest. If you don't need a full charge, turn off your phone 80 percent, which saves time and extends battery life.

Bonus tip: If you charge a Power Bank phone frequently, opt for Power Delivery (PD) or Quick Charge models.For example, Xiaomi Mi Power Bank 3 Pro 20000mAh gives out 18W and charges the Redmi Note 8 Pro almost as fast as an outlet.

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To check the actual charging speed, install the Ampere app (Google Play), which shows the current in real time, the norm for 18W RAM is 2500-3,000 mA in the first stages.

5. Wireless charging: myth or reality for the Redmi Note 8 Pro?

Officially, the Xiaomi Redmi Note 8 Pro does not support wireless charging, but some users are adapting it with Qi receivers that connect to the USB-C connector.

Wireless charging for the Redmi Note 8 Pro is more convenience than speed, and it's for those who appreciate the lack of wires, but are not willing to wait 1.5 hours longer.

• 🔥 Overheating. When wirelessly charging, the phone heats up more, which accelerates battery wear.
• 📏 If the case is thicker than 3-4 mm, the charging may not work.
• ⚡ Adapter power. We need a Qi transmitter. 10W+ (cheap 5W They will charge very slowly).

If you do decide to wirelessly charge, choose a kit with a cooling fan (for example, Baseus Wireless Charger), which will reduce the risk of overheating.

6.How to extend the life of the battery Redmi Note 8 Pro?

The battery life of the Redmi Note 8 Pro is 300-500 full cycles (approximately 2-3 years of active use). However, if you charge incorrectly, this period can be reduced to 1-1.5 years. Here are 5 rules that will help to maintain battery capacity:

• 🔋 Avoid full discharge (0%) and recharge (100%). Optimal range is 20-80%. Regular discharges up to 0% kill the battery 2-3 times faster.
• 🌡️ Do not charge at extreme temperatures. The ideal temperature for charging is 10–30°C. In the cold (< 0°C) or in the heat (> 40°C) the chemical processes in the battery are accelerated, leading to degradation.
• ⚡ Use original or certified RAMs. Cheap charging can cause unstable voltages that harm the battery controller. Signs of poor RAM: phone is hot or charging is jerky.
• 📵 Turn off background processes while charging. Games, streaming videos, or updating apps load the processor, which increases the battery temperature.
• 🔄 Calibrate the battery every 3 months. Completely drain the phone to 0% (until it turns off), then charge to 100% without interruptions.

If you notice that the battery is running out quickly (for example, less than 4 hours of screen time), check its condition in the AccuBattery application. If the capacity has fallen below 80% of the original (ie < 3600 mAh), it is time to think about replacing it.

⚠️ Warning: If the phone suddenly turns off at 20 to 30% charge, it is a sign of severe battery wear or controller malfunction.In this case, replacement is mandatory - further use may lead to battery bloating.

7. Frequent questions about charging the Redmi Note 8 Pro