How long to charge a Xiaomi smartphone: from Redmi to POCO and Black Shark

Why does Xiaomi charge time vary from 30 minutes to 5 hours?

You bought a new Xiaomi, you plugged it into charging, and after an hour, the battery was barely 50 percent, or vice versa: the phone charged in 20 minutes, but after 3 hours it went to zero. What's the matter? Charging time depends on four key factors:

1) Smartphone model and its hardware platform. Flagship Xiaomi 14 Ultra or Black Shark 6 Pro support ultrafast charging up to 120W, while the budget Redmi A2 is limited to 10W. 2) Charger type: the original power supply from Xiaomi with Quick Charge 4+ will charge the phone 2-3 times faster than a cheap no-name adapter. 3 Battery state - worn-out battery (capacity below 80%) charges longer and loses energy faster. 4 Charging conditions: using the phone while connecting to the network increases the time by 30-50%, and the temperature below 10 ° C or above 35 ° C automatically reduces.

In this article, we will analyze the actual charging time data for Xiaomi’s 20+ models (2020-2026), compare the types of charging and checklist how to speed up the process without harming the battery, starting with the most important thing – the official manufacturer specifications.

Official data: charging time according to Xiaomi models (table)

Xiaomi’s documentation specifies charging times for “ideal conditions”: the original cable, the power supply from the kit, the screen turned off and the temperature of 20-25 ° C. In practice, these figures can vary by ±15-20%.

Please note: models with support 120W (for example, POCO F6 Pros charge up to 50% in just 7–9 minutes, but the last 20% (80)→100%) can take up to 30 minutes, and this is due to the multi-stage battery protection system, which reduces current at high charge levels.

⚠️ Note: If your Xiaomi charges 40% or more longer than the time indicated in the table, this may signal a battery failure or use an uncertified charger. → Battery status.

Fast, wireless, reverse: What types of charging does Xiaomi support?

Xiaomi uses several charging technologies, each of which affects speed and convenience.

• 🔌 Quick Charge (Quick Charge) 3.0/4+, HyperCharge: standard for most models. Power varies from 18W (budget Redmi before 200W (Experimental prototypes. For example, Xiaomi 11T Pro 120W charge up 17 Minutes but requires a special cable with support USB Power Delivery 3.0.
• 📶 Wireless Charge (Qi, Mi Wireless Charge): Available in flagships (Xiaomi 14, Mix Fold 3) and some models POCO. Power up to 50W (Minus: heating the phone and charging station, charging time increases by 20-30% compared to wired.
• 🔄 Reverse Charging: allows Xiaomi to be used as a power bank for other gadgets (earphones, smart watches). 10W. Included in the Settings menu → Battery → Reverse charging.
• ☀️ Solar charging: experimental function in some models POCO (for example, POCO M6 Pro with battery cover. Power up to 5W, Full charge time – 8-10 hours in bright sun.

Which type to choose? For everyday use, wired fast charging is optimal — it's the most efficient. Wireless is convenient for the office or home, but not for emergencies. Reverse charging is useful on trips, but quickly puts the phone's battery on.

5 Mistakes That Make Xiaomi Charge Too Long

Even if your Xiaomi supports 120W, real charging times can take hours, due to common user errors:

1. Use of unoriginal cable or power supply: Cheap accessories often do not support Quick Charge or USB-PD protocols. For example, a cable without shielding can limit current to 0.5A, increasing charging time by 4-5 times.
2. Charging when used actively: Games, video calls or video rendering load the processor, which heats up and causes the system to reduce charging current. Tests show that the POCO F5 charges 40% slower when running Genshin Impact.
3. Low ambient temperature: At 0°C, lithium-ion batteries lose up to 50% of capacity, and the charging controller limits current. Xiaomi may not charge at all in the cold until it heats up to +10°C.
4. Charging optimization enabled. Adaptive Charging function (in the Settings menu) → Battery artificially slows the process after 80% to extend the battery life.
5. Charging through USB-hub or laptop. USB 2.0 on PCs is only available 0.5A, a) the hubs may limit the power to 7.5W. To fully charge the Redmi Note 12 (5000 mAh) will take 6-7 hours.

If you avoid these errors, charging time will be reduced by 30-50%.For example, the Xiaomi 12 Pro with 120W charges in 18 minutes in ideal conditions, but if you ignore the rules, the process can take 1.5 hours.

How to check the real charging speed on Xiaomi?

To find out how fast your Xiaomi charges, you don’t need to install third-party apps, just use the hidden menu of engineering settings or built-in MIUI tools:

1. Using Battery Status: Go to Settings → Battery Status → Usage Schedule. This shows the current charging power in mW. For example, if you see 18,000 mW, it means 18W.
2. Using the engineering menu (for advanced users): Enter the code ##4636## in the Phone app, then select Battery Information. This displays Level, Voltage and Temperature. To calculate power, multiply voltage by current (e.g. 5V × 3A = 15W).
3. Using the AccuBattery app: The utility shows the real charging speed in mA, battery temperature and wear. 120W-The charging application shows 3000 mA, which means that the power supply or cable does not match the declared power.

If the actual power is less than 30% below the declared power, the problem may lie in:

• 🔋 Battery wear (capacity) <80% nominally).
• 🔌 Damaged port. USB-C (contact-oxidation).
• 📱 Software restrictions (for example, after unofficial firmware).

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To reset the battery calibration data, fully discharge the phone before it turns off, then charge to 100% without interruption, repeat the procedure 2-3 times, which will help restore an accurate charge level report.

How much to charge Xiaomi for the first time?

One of the most common questions is, "Should I charge the new Xiaomi 12 hours?" The answer is no. It's an outdated myth, relevant to 2000s nickel-cadmium batteries. Modern Xiaomis are equipped with lithium-polymer batteries that do not require "swinging"; in fact, the first charge is no different from the next one.

What is really important to do when using first:

• 🛠️ Check battery settings: Turn off Adaptive Charging and Background Optimization if they interfere.

⚠️ Note: If you bought Xiaomi "hands-on" and the seller claimed that "the battery is new, charged only with original charging", check the real wear in the AccuBattery application or through the code # # # #6484# # (MBTest menu.

Another myth is, "You can't use your phone while you first charge." There's actually no limit. Today's Xiaomi controllers automatically adjust the current, even if you run a resource-intensive app.

Wireless charging: how long does it take and is it worth using?

Wireless charging (Qi) seems convenient, but in practice it loses to wired charging in three ways:

1. Speed: even 50W-Charging (like the Xiaomi 13 Pro) is 30% slower than wired charging 120W. For example, Xiaomi 12S Ultra charges wirelessly in 50 minutes, while cable charges in 18 minutes.
2. Heat: Induction coils heat the phone to 40–45°C, which speeds up battery wear and can drop 10–15 percent per year with frequent use.
3. Positioning: The phone should lie strictly in the center of the charging station, and a 5 mm shift reduces power by 50%.

When is wireless charging justified?

• 🏠 At home or in an office where the phone is on the table for a long time.
• 🚗 In a car with Qi support (for example, in Xiaomi) SU7).
• 💼 For charging headphones Xiaomi Buds or smart watch Mi Band.

If you prefer wireless charging, follow the rules:

• 🔹 Use the original Xiaomi stations (e.g. Mi Wireless Charging Pad) 50W).
• 🔹 Remove the cover – it can block the signal.
• 🔹 Don’t put your phone on metal surfaces, it’s a hindrance.

FAQ: Frequent questions about Xiaomi charging