Xiaomi Redmi 9C NFC is a budget smartphone with a good margin of autonomy, but many users are faced with the question: why does the device charge too long? The fact is that even with support for accelerated charging, the function can be turned off by default or not work at full capacity. In this article, we will understand how to correctly enable fast charging on the Redmi 9C NFC, what MIUI settings are responsible for this, and what to do if the smartphone stubbornly ignores the “fast” adapter.
It's important to understand: Redmi 9C NFC Powered by MediaTek Helio processor G35 and battery capacity 5000 mAh, but officially supports only charging power 10 Watt (5V/2A). It's not the fastest speed, but it can be optimized. MIUI They hide energy saving options that indirectly affect charging times, and we'll show you how to get around these limitations and achieve maximum speed without risking battery life.
1. Check support for fast charging on Redmi 9C NFC
Before you try to enable accelerated charging, make sure your smartphone supports it at all. The Redmi 9C NFC has a few key features:
- 🔌 Official charging power: 10 Watt (5V/2A) — It's the standard for the model (18W, 22.5W) not supported by hardware.
- 📱 Processor: MediaTek Helio G35 No built-in controller for Quick Charge or Power Delivery.
- ⚡ Battery: 5000 mAh with support MI Fast Charge (simplified version of fast charging from Xiaomi).
To check the current charging speed:
- Connect your smartphone to the charger.
- Open the Security app → Battery.
- Click on the gear icon (⚙️) top-right.
- Select Charging State – the current power (e.g. 9.8W) will be displayed here.
⚠️ Warning: If you see a value below 5W, the problem may be in the cable, adapter, or power saving mode on. 9C NFC Does not support charging above 10W – do not try to force the process with third-party firmware or “magic” applications.
2. MIUI settings affecting charging speed
Even if you use the right adapter, MIUI can artificially limit charging through hidden settings.
Energy saving mode
Active energy saving mode reduces the charging speed by 30-50% to turn it off:
- Go to Settings → Battery and performance.
- Select Power Saving Mode.
- Set the switch to the off position or select Balanced.
Charging optimization (MIUI 12 and later)
Optimized charging slows down after 80% to keep the battery healthy.
- Open the Settings. → Battery. → Settings (⚙️).
- Find the Optimized Charging option and deactivate it.
Power saving mode is off.
Deactivated optimized charging
The original cable is used.
The adapter supports 5V/2A (10W)
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It’s also worth looking at Settings → Special Features → Battery and making sure there are no active restrictions. For example, the option to Limit Charging (if any) should be turned off.
Selection of charger and cable
The Redmi 9C NFC doesn’t support Quick Charge 3.0/4.0 or Power Delivery protocols, but it can charge slightly faster from 5V/2A (10W) adapters instead of the standard 5V/1A (5W) ones.
| Adapter type | Power | Is it okay? | Notes |
|---|---|---|---|
| Original from Redmi 9C | 5V/2A (10W) | ✅ Yes. | The best option |
| Third-party (e.g. Baseus, Anker) | 5V/2A (10W) | ✅ Yes. | Must support MediaTek PE+ |
| Adapter from Redmi Note 8/9 | 9V/2A (18W) | ⚠️ Partially. | It will run on 5V/2A (10W) |
| Quick Charge 3.0 Quick Charge | 9V/2A (18W+) | ❌ No. | The smartphone does not support the protocol |
Pay special attention to the cable:
- 🔗 Use the original cable or certified USB-Type-C with support 2A.
- ⚡ Avoid cheap unlabeled cables – they can limit current to 1A.
- 🔍 Check the cable for damage: bending or melting reduces conductivity.
💡
If the smartphone is warming up while charging, remove the case and put it on a flat surface. Overheating above 40 ° C automatically reduces the charging speed to 5W.
4. Software methods of accelerating charging
If the hardware conditions are met (correct adapter + cable), but charging is still slow, try these methods:
Resetting battery settings
Sometimes the charging data gets lost, and the system misidentifies the current.
- Go to Settings → Applications → Application Management.
- Find Security and press Warehouse.
- Select Clear Data (this will reset battery statistics).
Removal of background processes
Active apps (especially games or social media) consume energy and slow down charging.
- 📱 Close all applications through the recently used.
- 🔄 Turn on Plane Mode (this will speed up charging by 10-15%).
- 🎮 Turn off Auto Update apps on Google Play.
What if your smartphone doesn’t recognize fast charging?
Frequent problems and their solutions
Even after all the settings, the Redmi 9C NFC can charge slowly.
| Problem. | Possible cause | Decision |
|---|---|---|
| Charging goes to 5W instead of 10W | Power saving mode is on | Turn it off in Settings → Battery |
| The smartphone does not recognize the 10W adapter | Unoriginal cable or damaged port | Try another cable/adapter |
| Charging stops at 80% | Active Optimized Charging | Turn it off in the battery settings |
| The phone is warming and slowly charging | Overheating due to background processes | Close the applications and remove the case |
⚠️ Note: If after all the manipulations the charging speed does not exceed 5W, The problem may be the power controller on the motherboard, in which case, contact the service center - self-repair can cause the smartphone to fail.
6.Fast charging myths on the Redmi 9C NFC
There is a lot of incorrect information on how to “disperse” charging on Xiaomi budget smartphones.
- ❌ "You can flash a custom core to support Quick Charge – Redmi 9C NFC hardware-free QC, Any manipulation of the firmware will only lead to unstable work.
- ❌ "Apps like AccuBattery speed up charging – these programs only show statistics, but do not affect hardware limitations.
The only way to speed up charging a little is to use a quality 10W adapter and turn off all background processes. Everything else is either useless or dangerous for the battery.
💡
The Redmi 9C NFC does not support charging above 10W. Any attempt to circumvent this limitation by software or hardware will result in shortened battery life or a breakdown of the power controller.
7. Alternative ways to extend the life of the battery
If you are not happy with the charging speed, you may want to consider optimizing your energy consumption. Here are some tips:
- 📵 Disabling unnecessary modules: GPS, NFC, Bluetooth and mobile data in the background significantly drain the battery.
You can also use a dark topic (for example, for the AMOLED-It saves up to 15% of the charge on screens and limits the screen refresh rate to 60 Hz (if available).