Why is the choice of charging for the Mi 8 important?
The Xiaomi Mi 8, released in 2018, is still a popular smartphone due to its balanced specs and affordable price. However, over the years, many users have questions: what kind of charging was included in the package, can you use adapters from other Xiaomi models, and how to avoid battery damage?
In this article, we will discuss in detail: original charging out of the box, supported standards for fast charging, compatibility with adapters from other smartphones. Xiaomi/Redmi/POCO, We will also give you recommendations on the choice of alternative chargers, focusing on the myths of “harmful” charging and how to properly operate the battery so that it lasts longer.
If your Mi 8 is slower to charge or warm up while connecting, you'll find solutions to these problems here, and for those planning to buy a new adapter, we've compiled a compatibility table with popular Xiaomi and third-party charging models.
Original charging Xiaomi Mi 8: features out of the box
As standard, the Xiaomi Mi 8 (model M1803E1A for the global market) was a power adapter with the following parameters:
- 🔌 Type of connector: USB Type-A (on adapter) → USB Type-C (on cable).
- ⚡ Power: 18W (Quick Charge 3.0) is the maximum supported charging speed for this model.
- 📦 Adapter model: MDY-08-EM (or similarly marked 18W).
- 🔋 Cable: original USB-A → USB-C length of 1 meter (supports current up to 3A).
Important: some regional versions (for example, in China) could be equipped with adapters for 10 watts — this is not a mistake, but a feature of local standards. You can check the power of your adapter by reading on the case: look for lines like Output: 5V=3A / 9V=2A / 12V=1.5A.
If your Mi 8 is charging slower than expected, the first thing you do is check: Settings → Battery → Charging status. This shows the current power (in watts). Normal values are 15 to 18 watts when using the original adapter.
Supported fast charging standards
Xiaomi Mi 8 is equipped with a power controller that supports several accelerated charging protocols:
| Standard | Max. Power. | Compatible adapters | Notes |
|---|---|---|---|
| Quick Charge 3.0 | 18 W. | Original MDY-08-EM, Qualcomm QC 3.0 adapters | Optimal mode for the Mi 8. Charges up to 50% in ~30 minutes. |
| Quick Charge 2.0 | 12-15 W | Older Xiaomi adapters (e.g. from Mi 5) | It works, but slower than QC 3.0 by ~20-30%. |
| USB Power Delivery (PD) | 18W | Adapters with PD 2.0 support (for example, from MacBook) | Cable required USB-C → USB-C. |
| Standard USB. | 5-10 W. | Any 5V/1-2A adapter | Charging is 2-3 times slower. |
⚠️ Attention: If you connect the Mi 8 to an adapter with more than 18 watts (such as 30 watts or 65 watts), the smartphone will automatically limit consumption to a safe level.
Interesting fact: Mi 8 can be charged from wireless charging (Qi standard), but only at power up to 7.5 watts. This requires a separate purchase of a wireless stand (for example, Xiaomi Mi Wireless Charging Pad).
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If your Mi 8 doesn't detect fast charging, try dust-freeing the USB-C port with a wooden toothpick. Often the problem lies in poor contact, not the adapter.
Compatible with charging from other Xiaomi smartphones
Many users are wondering: can you charge the Mi 8 with adapters from the Redmi Note 10 Pro, POCO X3 or Mi 11? The answer is yes, but with reservations. Here are the key rules:
- ✅ Suitable adapters (18 Waht: Xiaomi Mi 9/9T (MDY-11-EP) Redmi K20 Pro (MDY-11-EC) POCO F1 (original 18W)
- ⚠️ They work, but not optimally (10–12 W): Redmi Note 8/9 (adapter 10 Mi Mi A2/A3 (Quick Charge)
- ❌ Not recommended: Adapters over 30W (e.g. Mi 10 Ultra or Black Shark) - can overheat cables. Cheap no-name charges without certification.
🔍 How do you check compatibility? Connect the adapter and look at Settings → Battery. If the power is 15 to 18 watts, that's okay. If the 5 to 10 watts is not Quick Charge 3.0.
Should you buy a new adapter if the original one is lost? If you want top speed, choose models labeled Quick Charge 3.0 or PD 18W.
- 🛒 Xiaomi MDY-12-EU (18W official)
- 🛒 Anker PowerPort III Nano (18 watts, compact)
- 🛒 Baseus 18W PD (budgetary)
☑️ Checklist before buying a new charger
Charging cable: why it is as important as an adapter
Many users are only paying attention to the adapter, forgetting that the cable is equally important. For the Xiaomi Mi 8, a cable with 3A current support and high-quality overflow is critical.
- 🔌 The original cable: USB-A → USB-C (Black, 1 m long) with Xiaomi marking and logo 3A.
- ⚡ Alternatives: Anker PowerLine Cables+ (nylon-plate, 3Baseus cables with certification USB-IF. Original cables from Mi 9/10 (fully compatible).
- ❌ What to avoid: Cheap unmarked cables (can melt at high currents); cables over 1.5 m long, lose up to 30% of power; damaged cables with bare wires (risk of short circuit).
⚠️ Warning: If the cable starts to warm up while charging, turn it off immediately! This is a sign that the veins inside have oxidized or are not designed for 3A current. USB-C smartphone.
Tip: To extend the life of the cable, don't bend it at right angles at the connector. Keep it neatly folded, not wound on the adapter.
How to distinguish the original Xiaomi cable from a fake?
Frequent charging problems and their solutions
If your Xiaomi Mi 8 has stopped charging or is doing it too slowly, the reasons may be both software and hardware.
1.The smartphone is not charging at all
- 🔍 Check the port. USB-C For debris (use a flashlight).
- 🔄 Restart the device – sometimes resetting the power controller helps.
- 🔌 Try another adapter. + cable (preferably original).
- 🔋 If the battery is completely discharged, wait 10-15 minutes – sometimes it takes time to wake up the controller.
Charging is very slow (5 watts instead of 18 watts)
- ⚡ Make sure the adapter supports Quick Charge 3.0.
- 📱 Turn on the plane mode - background processes can limit current.
- 🔥 Check the temperature of the smartphone: when overheating (>40°C) power is automatically reduced.
- 🔄 Reset the battery settings: Settings → Annexes → Application management → Three points. → Reset the settings.
3. Charging is interrupted (it goes, it does not)
- 🔌 Check the connector. USB-C for the backlash - maybe it's shattered.
- 🔄 Try charging your smartphone in a switched-off state.
- 📦 If the problem manifests itself with a specific adapter, check it on another device.
⚠️ Note: If after all the manipulations the charging has not recovered, the problem may be in the power controller or the battery itself. In this case, we recommend contacting the service center!
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Most charging problems are solved by replacing the cable or cleaning the port, and only 10 percent of cases require hardware repair.
How to extend the life of the Xiaomi Mi 8 battery
The Mi 8 battery (with a capacity of 3400 mAh) degrades over time, but proper operation can slow this process.
- 🔋 Optimal charge level: keep the battery in the range of 20-80%.Constant charging up to 100% reduces the lifespan.
- 🌡️ Temperature: Avoid charging at temperatures below 0°C or higher than 35°C.
- ⚡ Use original adapters: cheap charging can deliver unstable voltage, which harms the battery.
- 📵 Do not play while charging: the load on the processor + fever = fast-wear.
- 🔄 Calibration of the battery: once every 2-3 months completely discharge the smartphone before turning off, then charge to 100% without interruptions.
📊 How do you check the battery status? Enter the dialer code:
##4636##Go to Battery Information. Health should be close to 100%. Values below 80% indicate severe wear and tear, and it's time to think about replacing.
Should you change the battery yourself? If you have experience, you can buy the original battery (article: MBJ402800) and replace it with an opening kit. However, non-original batteries often have less capacity and may not support fast charging.