Xiaomi Mi 8: what charging supports? Technical nuances and recommendations for choice

Xiaomi Mi 8 – the flagship smartphone of 2018, which still remains relevant thanks to powerful stuffing and regular updates MIUI. However, over time, users have questions about the compatibility of the device with modern chargers. In this article, we will discuss in detail what charging supports Xiaomi Mi 8, what fast charging standards are compatible with it, and how to choose the right adapter so as not to harm the battery.

Many people mistakenly believe that any Xiaomi charger will work for the Mi 8, but it doesn't.+, But there are some limitations, and it's also important to consider not only the power of the adapter, but also the type of cable, and the protocol, and we'll analyze the official specifications, test results, and user feedback to make clear recommendations.

If you are planning to buy a new charger for the Mi 8 or just want to understand the technical details, this article is for you. We will also take a look at common myths (for example, about the “harmfulness” of fast charging) and give practical tips for extending the battery life.

Official Charging Charging Characteristics Xiaomi Mi 8

According to the documentation of Xiaomi, the smartphone Mi 8 is equipped with a battery capacity of 3400 mAh and supports Quick Charge 4 technology+ (QC 4+). This means that the device can charge up to 18 watts using a compatible adapter:

• 🔌 Maximum charging power: 18 Watt (9V/2A or 12V/1.5A mode QC 4+).
• 📱 Standard kit: In the box with the Mi 8 was an adapter for 18 watts (model) MDY-08-EM) plug-in USB Type-C.
• ⚡ Backward Compatibility: The device also supports Quick Charge 3.0/2.0 standard charger 5V/2A (10 Watt).
• ⚠️ Cable Limit: Supported cable is needed to get maximum power USB 2.0 or higher and resistance not exceeding 0.5 ohms.

It is important to understand that the Mi 8 does not support more modern standards like Quick Charge 5, PD (Power Delivery or proprietary Xiaomi technologies (e.g. HyperCharge or TurboCharge) using adapters with power above 18W will not increase the charging speed, and in some cases can lead to overheating.

Official adapter from Xiaomi (model) MDY-08-EM) Optimized to work with the Mi 8 and provides stable charging without surges, but if the original power supply is lost, you can use third-party adapters - but with reservations, which we will discuss later.

Compatible with different fast charging standards

The Xiaomi Mi 8 supports several fast charging protocols, but not all of them work equally well. Let’s look at the key standards and their features for this smartphone.

Critical nuance: Xiaomi Mi 8 It does not support Power Delivery (PD), despite the presence of a connector USB Type-C. This means charging from laptops, tablets or modern smartphones (like iPhones). 15 or Samsung Galaxy S23) will be operating in the basic mode 5V/2A, which will slow down the process considerably.

It is also worth noting that the Mi 8 is not compatible with proprietary Xiaomi technologies.

• ❌ HyperCharge (120W) – not supported.
• ❌ TurboCharge (30-50 W) - not supported.
• ❌ Mi Charge Turbo (40W) - not supported.

Using adapters with these standards will not speed up charging and in some cases may cause overheating due to incorrect voltage distribution.

⚠️ Note: Some cheap adapters with support QC 4+ They can give out unstable voltages, which leads to accelerated wear of the battery.We recommend using certified devices from Xiaomi, Anker, Baseus or Aukey.

What Chargers Are Right for Xiaomi Mi 8?

If the original adapter is lost or out of order, you can use third-party chargers, but with a few rules in mind.

• 🔋 The original adapter Xiaomi 18W (MDY-08-EM) — Best choice. Full compatibility, stable operation.
• 🔌 Anker PowerPort+ 1 Quick Charge 3.0 Supports QC 3.0, almost identical to the original in speed.
• ⚡ Baseus 18W Quick Charge 3.0 – budget option with good reviews.
• 📱 Adapter from Xiaomi Mi 9/10 (18W) — It is compatible because it uses the same protocol. QC 4+.
• ❌ Charging from iPhone or Samsung without QC — will be working on the 5V/2A (slowly).

When choosing an adapter, pay attention to the following parameters:

1. Power: Optimal 18 Watt (9V/2A or 12V/1.5A).
2. The protocol should support Quick Charge 4+ 3.0.
3. Connector: USB Type-A (for adapter) + USB Type-C (for cable).
4. Certification: Qualcomm Quick Charge logos or USB-IF.

Pay special attention to the cable. You need a cable that supports fast charging. USB 2.0 or higher and low resistance. Cheap cables often become a bottleneck, limiting power to 10 watts. UGREEN, Anker.

Check out Quick Charge 4 support+ 3.0|

Choose an 18W adapter|

Use the cable. USB Type-C with low resistance|

Avoid cheap no-name adapters|

Check the certification (Qualcomm, USB-IF)-->

How to check if fast charging works on Xiaomi Mi 8?

Not all adapters, even those with Quick Charge support, guarantee fast charging on the Mi 8. To make sure your smartphone is charging at an accelerated rate, follow the following steps:

1. Connect the charger and wait for the lightning icon to appear ⚡ If you don't have one, it's charging as normal (5V/2A).
2. Install the Ampere app (available on Google Play) and it shows the current current (in mA) and voltage (in B). QC 4+ the value should be close to 1500-1800 ma 9V.
3. Check the body temperature. 8 may be heated to 40-45°C is normal. If the temperature is higher than that. 50°C, turn off the charging and let the device cool down.

If the Ampere app shows values below 1000mA, it means that:

• 🔌 The adapter does not support Quick Charge.
• 📱 A poor quality cable is used.
• 🔋 Battery is very worn out (more than 500 charging cycles).
• 🛠️ Connector problems USB Type-C (oxidation, pollution).

Also, it is worth considering that the Mi 8 automatically reduces the charging power in the following cases:

• 🌡️ Battery temperature above 45°C.
• 🔋 Charge level exceeds 80% (for battery protection).
• 📵 Simultaneous use of resource-intensive applications (games, video editing).

⚠️ Note: If the Mi 8 doesn’t recognize fast charging even with the original adapter, try resetting the battery settings. → Annexes → All applications → Battery and productivity → Warehouse → Clear the data.

Myths and misconceptions about charging Xiaomi Mi 8

There are many myths around charging Xiaomi Mi 8, which often mislead users.

Myth 2: “You can use any charge from Xiaomi” is not true. For example, adapters from the Redmi Note 10 Pro (33 W) or Mi 11 (55 W) will not speed up charging the Mi 8, as it does not support these standards. The maximum you get is 18 W (if the adapter is compatible with the Mi 8). QC 4+).

Myth 3: “Recharging through USB-The computer port is safer, in fact, USB-PC ports usually give out everything. 0.5A (2.5 W), which is 7 times slower than the original charge, and the voltage is unstable. USB-Port can adversely affect the smartphone power controller.

Myth 4: "We need to discharge the battery to 0% for calibration" is an outdated recommendation for nickel-metal hydride batteries. 8 They don't require a full discharge. Instead, it's recommended that you keep the charge level in range. 20-80% prolongation.

Myth 5: “Wireless charging is possible through an adapter” – Xiaomi Mi 8 does not support wireless charging either natively or through adapters. Attempts to use Qi receivers can lead to overheating and battery damage.

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If you charge your smartphone frequently at work, buy a second original adapter and leave it at the office, which will save you from having to carry a charger with you and reduce the risk of losing or damaging it.

How to extend the battery life of Xiaomi Mi 8?

The battery is one of the most vulnerable components of the smartphone, and over time, its capacity decreases, and the Mi 8 is no exception, but following a few recommendations, you can significantly slow down the degradation process.

• 🔋 Avoid full discharge: Try to recharge your phone when the charge drops below 20%.
• ⚡ Don't keep on charging all night: Once you reach 100%, turn off power to avoid micro-charge cycles.
• 🌡️ Control the temperature: Do not use your smartphone in direct sunlight or charge it in hot conditions (such as in a car in the summer).
• 📵 Turn off resource-intensive tasks while charging: Games, video editing and streaming increase battery heat.
• 🔄 Calibrate the battery once every 3 months: Discharge the phone to 0% (until it turns off), then charge to 100% without interruptions.

It is also useful to enable battery optimization in the settings MIUI:

1. Go to Settings → Battery and Performance → Battery Settings
2. Activate the option "Optimize charging" (if available).
3. Turn on "Energy Saving Mode" at low charge level.

If the battery capacity fell below 80% from the original (can be checked in the settings) → Battery → Battery status, consider replacing it. Original battery for Mi 8 near 1500-2000 Replacement at the service center will cost in 1000-1500 ruble.

⚠️ Note: Using non-original low-quality batteries can cause the battery to bloat and damage the motherboard.Buy batteries only from trusted sellers (for example, in Xiaomi branded stores or on AliExpress from sellers with a rating above 98%).

Frequent charging problems and their solutions

Xiaomi Mi 8 users sometimes face problems when charging, and let’s look at the most common ones and how to fix them.

If none of these things worked, the problem could be the power controller on the motherboard, which would require a diagnosis at the service center. 8 roughly 2000-3000 ruble.

Also pay attention to the version. MIUI. Some firmware (especially custom ones) may have charging bugs. If you have problems after the system update, try rolling back to the previous version or resetting to factory settings (Settings). → The phone. → Resetting settings).

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If the phone stopped charging after falling or getting moisture, do not try to recharge it - this can lead to a short circuit.

FAQ: Answers to popular questions