Xiaomi Mi 8 is the flagship smartphone of 2018, which still remains relevant thanks to the powerful hardware and support for custom firmware. However, over the years, many users have asked: what charge to use for Xiaomi Mi 8 if the original unit is lost or broke? In this article, we will analyze all the nuances – from technical specifications to tips for extending the battery life.
The Mi 8 supports Quick Charge 4+, but with reservations. The manufacturer completes the device with an 18-watt charger, although the device is able to digest higher power. This creates confusion: can you use charging on 30W, 65W or even 100W? The answer is yes, but with limitations: the smartphone will automatically reduce power to a safe 18W if the unit is not certified by Xiaomi.
Technical Charging Specifications Xiaomi Mi 8: What the manufacturer says
The official specifications of the Xiaomi Mi 8 (model M1803E1A) read:
- 🔋 Battery capacity: 3400 mAh (lithium-polymer, non-removable).
- ⚡ Support for fast charging: Quick Charge 4+ (before 18W).
- 🔌 Connector: USB Type-C (version 2.0, without Thunderbolt support).
- 📦 Complete charging: unit MDY-08-EM (18W, 5V/3A or 9V/2A).
Important: Even though the smartphone supports QC 4+, it is not compatible with newer standards like Quick Charge 5 or PD 3.0. This means that chargers with power above 18W (such as the 30W from Redmi Note 10 Pro) will work, but will not speed up the charging process.
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If your Mi 8 is warming up while charging, try turning off the fast charging feature in the settings: Settings → Battery → Fast Charging.
Original charging vs compatible analogues: what to choose
The manufacturer recommends using the original MDY-08-EM power supply, but alternative options are also suitable in practice, provided that the key parameters are met.
| Type of charging | Model/brand | Power | Pluses | Cons |
|---|---|---|---|---|
| Original. | MDY-08-EM (Xiaomi) | 18W | ✅ Optimized for Mi 8✅ Stable work | ❌ Hard to find on sale❌ High price (~1500₽) |
| Compatible (QC 3.0) | Anker PowerPort III | 18W | ✅ Cheaper than the original.✅ Compact size | ❌ It may not be recognized as the "original" |
| Universal (PD) | Baseus 20W | 20W | ✅ Suitable for other devices | ❌ Charging will be limited. 18W |
| Budgetary | Xiaomi 10W (old model) | 10W | ✅ Very cheap (~300₽) | ❌ Slow charging (3)+ hour) |
⚠️ Warning: Avoid cheap no-name charges without certification, they often don't match the declared characteristics and can damage the smartphone's power controller:
- 🔥 Heating above 50°C. Working.
- 📉 Unstable voltage (checked by multimeter).
- 🚫 No markings CE ROHS.
Can you charge Xiaomi Mi 8 charging from other models Xiaomi
Yes, but with reservations.
- Charges from Mi 9/10/11 (30W+): will work, but the speed will be limited to 18W. The Mi 8 controller does not support higher power.
- Charges from Redmi (10W–22.5W): suitable if the power does not exceed 18W. For example, the unit from Redmi Note 8 Pro (18W) is the best option.
🚨 Critical point: Never use laptop chargers (e.g., laptop chargers, 65W or 100W) through USB-C Even if the connector is suitable, these units can apply voltage to the 20V, This is guaranteed to disable the smartphone's power controller. USB-ports (max. 5V/2.4A).
What happens if you use a 65W charger?
How to check that charging is suitable for Xiaomi Mi 8
To make sure that the power supply selected is safe, follow 4 steps:
☑️ Checking the compatibility of charging
For accurate diagnosis:
- Connect the charging and run the Ampere app (available on Google Play) and it will show the actual charging current: 🔋 Regular charge: 1.5–2.0A (5V). ⚡ Fast charging: 2.5–3.0A (9V).
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⚠️ Warning: If a smartphone gives a “Use the original charger” notification after connecting a new charger, this does not always mean danger. Often the message appears due to the lack of a Xiaomi digital signature in the block. However, if you are simultaneously experiencing strong heating or slow charging, replace the charging.
Top.-5 Faults in charging Xiaomi Mi 8: shorten the life of the battery
Even with the right power supply, you can inadvertently damage the battery.
- Charge to 100% every time. Lithium polymer batteries degrade faster while maintaining maximum charge at all times. Optimal range is 20-80%.
- Using a smartphone while charging: Games or videos load the processor, causing the battery to overheat (especially if the power supply is weak).
- Charging at night.The Mi 8 doesn't have intelligent charging controls (unlike the newer models), so recharging to 100% over a few hours accelerates wear and tear.
- The use of damaged cables, the breaks in the cable lead to unstable current, which is harmful to the power controller.
- Extreme temperatures: Charging at temperatures below 0°C or above 35°C irreversibly damages the battery capacity.
If the time is longer than 3 hours, check the cable, power supply or battery status.