Xiaomi Redmi 8, released in 2019, is still a popular choice among budget devices due to its reliability and balanced performance. However, many users have a question: what charging connector is used in this model? The answer may seem obvious to experienced owners of Xiaomi equipment, but for beginners it is an important nuance that affects the choice of accessories and proper operation of the device.
In an era when most modern smartphones have switched to universal USB Type-C, Redmi 8 remained true to the classic standard - microUSB. This choice is due to the desire of the manufacturer to reduce the cost of the device without loss of functionality. But why microUSB, what are its features, and how to properly charge the Redmi 8, so as not to damage the battery? Let's get into the details.
What is the charging connector Xiaomi Redmi 8: technical specifications
Xiaomi Redmi 8 is equipped with a microUSB 2.0 connector, as confirmed by both official documentation and visual inspection of the device, which has the following key features:
- 🔌 Reversible design – unlike Type-C, microUSB has only one correct way to connect (top/bottom), which sometimes causes inconvenience.
- ⚡ Supports charging up to 18W – despite the seemingly outdated standard, Redmi 8 supports Quick Charge 3.0 technology (when using a compatible power supply unit).
- 📏 Compact – the connector takes up less space in the case, which allowed Xiaomi engineers to make the device thinner.
- 🔄 Wide distribution – at the time of release (2019), microUSB was the most popular standard for budget smartphones.
It is important to note that despite the availability of fast charging support, complete with Redmi 8 It's a standard power supply unit. 10 Watt (5V/2A). To activate Quick Charge 3.0 You will need to buy a compatible adapter (for example, from Xiaomi Mi Charge Turbo or third-party manufacturers with support). QC 3.0).
It is also worth mentioning the durability of the connector. MicroUSB is less durable compared to Type-C due to the more fragile design of the contacts. When used actively (connecting / disconnecting the cable several times a day), the connector can fail in 1.5-2 years.
- 🛠️ Connect the cable carefully, without jerking.
- 🔍 Regularly clean the connector from dust and debris (for example, using a toothpick).
- 🔌 Use cables with a reinforced connector housing (for example, with a metal tip).
Compatible cables and power supplies for Redmi 8
Because Redmi 8 uses microUSB, the choice of charging accessories is wider than for Type-C devices. However, not all cables and power supplies are equally secure.
| Accessory type | Recommended characteristics | What to avoid |
|---|---|---|
| MicroUSB cable | Length 1-1.5 m, thickness of wire ≥ 24 AWG, support QC 3.0 (if you need fast charging) | Tough cables (< 28 AWG), without certification, with damaged insulation |
| Power supply | 18 Watt (9V/2A or 12V/1.5A) Quick Charge Supported 3.0 | "No-name adapters without marking, blocks with output > 20 watts (may damage the power controller) |
| Power Bank | Capacity ≥ 10000 MAC, exit. 5V/2A or 9V/2A, support QC | Devices without protection from overheating or short circuit |
Important: Using uncertified cables or power supplies can cause the battery to overheat, reduce capacity, or even catch fire. Official accessories from Xiaomi (e.g. Mi Charge adapter) 18W Mi Original microUSB cables guarantee security, but high-quality analogues from Anker, Baseus or Belkin are also suitable.
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If your Redmi 8 is slowly charging, try cleaning the dust connector with compressed air (a canister for engineering) or a soft brush. Often the problem is not the power supply, but poor contact.
When buying a cable, pay attention to the following points:
- 🔍 Certification – presence of logos USB-IF, CE or RoHS on the package.
- 📦 Packaging – original cables are sold in branded hologram blisters.
- 🔌 Connectors – high-quality microUSB connector should have a metal body and a tight fit to the socket of the smartphone.
How to charge Xiaomi Redmi 8: tips for extending battery life
The Redmi 8 battery has a capacity of 5000 mAh, which is one of the key advantages of the model, but even the most capacious battery will degrade over time if you do not follow the rules of charging.
- Avoid full discharge. The optimal charge range is 20-80%. Regular discharges to 0% reduce battery life.
- Do not charge at extreme temperatures. Ideal range is 10-35°C. Charging in the cold or in direct sunlight harms the battery.
- Use an original or certified adapter.Power units with unstable voltage can damage the charging controller.
- Turn off overnight fast charging. If you leave your phone charging all night, you'd better use standard mode (5V/2A).
☑️ Proper charging of the Redmi 8
Redmi 8 implements Optimized Charging, which automatically limits the charge to 80% and brings it up to 100% just before the intended disconnection from the network.
- Go to Settings. → Battery and productivity → Optimized charging.
- Turn on the switch and set your schedule (for example, if you usually wake up at 7:00, the phone will be fully charged by that time).
This feature is especially useful if you are used to charging your smartphone at night, and it reduces the battery life at 100% charge, which has a positive effect on its durability.
What is "Optimized Charging"?
Frequent charging problems with Redmi 8 and their solutions
Even when properly operated, Redmi 8 users sometimes face charging problems, and consider the most common cases and ways to fix them:
| Problem. | Possible cause | Decision |
|---|---|---|
| The phone's not charging. | Contaminated connector, damaged cable or power supply | Clean the connector, try another cable/adapter |
| Slow charging. | Incompatible adapter is used or power saving mode is enabled | Connect the original power supply, disconnect the battery → Energy saving regime |
| Charging is interrupted | Poor contact in the connector or overheating of the battery | Check the density of the cable connection, let the phone cool down |
| The phone is charged only when it is off. | Software failure or damage to the power controller | Perform a reset or contact the service center |
If none of the methods helped, the problem may lie in a hardware malfunction:
- 🔋 Battery wear and tear – after 500-600 charge cycles, battery capacity decreases by 20-30%.Solution: battery replacement (cost) ~1500–2500 ₽).
- 🔌 Charging connector damage -- contact oxidation or mechanical damage. Solution: soldering or replacement of connector (~1000–1500 ₽).
- 🔧 Failure of the power controller – requires diagnosis in the service center.
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If the phone stopped charging after falling or getting moisture, DO NOT try to disassemble it yourself - this can lead to a short circuit.
Built-in tools can be used to diagnose the battery condition MIUI:
- Go to Settings → Battery and Performance → Battery Status
- Check the wear schedule and current capacity, and if it's below 80 percent of what it was originally, it's time to change the battery.
Can you replace microUSB with Type-C in Redmi 8?
Many users are wondering whether it is possible to upgrade Redmi 8, replacing microUSB with Type-C?
⚠️ Attention: Replacing the charging connector requires soldering at the motherboard level. Wrong actions can cause the power controller to fail or the device to fail completely. If you don't have experience in electronics repair, you'd better leave this procedure to the professionals.
The replacement process includes the following steps:
- Disassembling the phone and removing the motherboard.
- Removal of old microUSB connector using soldering equipment.
- Installation and soldering of a new Type-C connector (it is important to choose a compatible model with a similar fit).
- Checking the efficiency of charging and data transmission.
The cost of such modification in the service center will be 2000-3500 ₽ (depending on the region and complexity of the work; however, before making a decision, consider:
- ⚠️ Loss of warranty - if the phone is still on warranty, after replacing the connector it is canceled.
- ⚡ Risk of damage to the board – poor quality soldering can lead to short circuit.
- 🔄 Replacement of cables – all your old microUSB cables will be useless.
Alternatively, the adapter from microUSB to Type-C is used. ~300–500 ₽ They allow you to connect modern cables without modifying the phone, but they may not support fast charging and often break down due to fragile construction.
MicroUSB vs Type-C Comparison: Why Xiaomi Selected an Outdated Standard
The decision to equip Redmi 8 with a microUSB connector in 2019 has caused a lot of questions, because even budget models of competitors (for example, Realme 5 or Samsung Galaxy) M10) Why Xiaomi is taking this step? The reasons lie in the balance between cost, compatibility and target audience:
| Criteria | microUSB | Type-C |
|---|---|---|
| Cost of production | Cheaper by 10 to 15 percent. | Higher due to licensing fees |
| Charging speed | Up to 18 Wh QC 3.0) | Up to 100.+ W (in modern standards) |
| Strength | Less durable (1000-1500 connections) | More reliable (up to 10,000 connections) |
| Universality | Compatible with most of the older accessories | Standard for new devices |
For Xiaomi, the priority was the maximum availability of the Redmi 8. At the time of release, the model was positioned as an ultra-budget device (price). ~8000 ₽), And microUSB saved you a lot of time in the process without a lot of functionality, and in 2019, there were still a lot of microUSB accessories on the market, making life easier for users.
On the other hand, Type-C has undeniable advantages:
- 🔄 Reversible connection – no need to flip the cable.
- ⚡ Higher power – support charging up to 100W and above.
- 📱 Universality – one cable for a smartphone, laptop, headphones and other devices.
In subsequent models (starting with the Redmi 9), Xiaomi completely switched to Type-C, recognizing its advantages, but for the Redmi 8, the choice of microUSB was justified in terms of pricing.
Redmi 8 charging alternatives: wireless solutions and power bank
In addition to traditional wired charging, Redmi 8 supports other ways to replenish energy.
1. Wireless charging
The Redmi 8 doesn't have a built-in wireless charging module, but you can add it with special adapters, like Qi receivers that plug into a microUSB connector and allow you to charge your phone at a wireless station.
- 🔌 Nillkin Magic Disk adapter – attached to the back of the phone and connects to the connector.
- 📱 Case with wireless charging - for example, models from Spigen or Anker.
Cons of this solution:
- ⚡ Slow charging (usually no more than 5 watts).
- 🔋 Additional heating of the phone.
- 💰 Cost of adapter (~1000–1500 ₽) It is comparable to replacing the connector with Type-C.
Charging from power bank
Using an external battery is one of the most convenient ways to charge the Redmi 8 in field conditions.
- 🔋 Capacity - optimally 10000-20000 mAh (enough for 2-4 full charges Redmi 8).
- ⚡ Exit power – at least 18 watts to support fast charging.
- 🔌 MicroUSB port availability – some models only have Type-C output.
Recommended models:
- 🔋 Xiaomi Mi Power Bank 3 20000mAh — supportive QC 3.0 and has a microUSB port.
- 🔌 Baseus 10000mAh — compact and lightweight, with two USB-port.
⚠️ Warning: Don't use cheap power banks without overload protection. They can disable your smartphone's power controller. CE or RoHS on the case.