Wireless charging on Xiaomi Redmi 9: how to turn on and configure

Is it possible to do this on Redmi 9?

Xiaomi Redmi 9 has become one of the most popular budget devices due to its balanced specs and affordable price. However, many users are wondering: does this model support wireless charging? The answer is ambiguous - and here's why.

Officially, the Redmi 9 (M2003J15SC) doesn't have a built-in Qi charging module, unlike Xiaomi's flagship models like the Mi 11 or Mi 13. But that doesn't mean wireless charging is completely out of the question. There are workarounds, from adapters to alternatives, which we'll go through in detail.

Now, the important thing to understand is that if you're looking for native wireless charging support out of the box, Redmi 9 doesn't have it, but with additional accessories, you can do the same thing. Next up is a step-by-step guide for those who are willing to experiment.

Compatibility Check: What to Know Before Starting

Before you try to turn on wireless charging, make sure your device meets the minimum requirements.

🔋 Smartphone model: Make sure you have Xiaomi Redmi 9 (not Redmi Note 9 or Redmi) 9A — They have different technical characteristics. You can check the model in the Settings → The phone. → Model.
🔌 Type of connector: The device must have a working USB-C The Redmi 9 has a port, unlike the older models with Micro-USB).
📦 Firmware: Up-to-date version MIUI (preferably MIUI 12.5 or later) for correct handling of accessories.
🛠️ Physical condition: There should be no cracks or battery bloating on the back – this may interfere with the adapter installation.

If one of the items is not met, the risk of failure increases, for example, Redmi 9A with Micro-USB is not suitable for most wireless adapters.

⚠️ Note: Using uncertified wireless charging adapters can cause the battery to overheat or even bloat.Before buying, check reviews and safety certificates (e.g., Qi-Certified).

📊 You’ve already tried wireless charging on your Xiaomi?

Yeah, it works great.

I tried it, but it didn't work.

No, but I want to try.

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Method 1: Using an adapter for wireless charging

The most reliable method is to purchase an external Qi adapter that connects to a USB-C port and attaches to the back of a smartphone, which converts the signal from the wireless charging station into a wired charge through the port.

Here's how it works:

Buy an adapter that is compatible with Redmi 9 (e.g. Nillkin, Baseus or Xiaomi models for other devices).
Connect the adapter to the USB-C port of the smartphone.
Attach the adapter to the back (usually it is held on magnets or sticky-based).
Place your smartphone on a Qi charging station (support from 5W to 10W).

The advantage of this method is that you don't have to take your phone apart or interfere with the software, but there are also disadvantages:

⚡ The charging power will be lower than that of the wired (usually) 5W instead 18W).
📵 The adapter may interfere with the use of the cover or worsen the signal. NFC (if there is).
💰 The cost of a quality adapter starts from 1500-2500 ₽.

Support for Qi-standard|Compatibility with USB-C|Charging power (minimum) 5W)|Availability of a safety certificate|User reviews with Redmi 9-->

Method 2: Modification of the case (for advanced users)

This method involves disassembling the smartphone and installing an internal Qi module, which is only suitable for those who have experience in electronics repair or are willing to risk the warranty.

Procedure:

Get a Qi receiver for smartphones (for example, a module from AliExpress with 10W support).
Carefully disassemble Redmi 9 by following the YouTube guides (use plastic shoulder blades to avoid damaging the plumes!).
Connect the module to the battery or USB-C ports (depending on the type of adapter).
Lock the module inside the case and assemble the phone.

⚠️ Risks:

🔧 Loss of warranty (if the device is still warranty).
🔥 Ability to short circuit with incorrect connection.
📉 Reduced battery life due to additional power consumption by the module.

What if the phone does not turn on after the modification?

If after assembly Redmi 9 does not respond to the power button, check: 1. Correct connection of the plumes (especially the display and battery). 2. The battery charge (plug the charger for 30 minutes). 3. Integrity of contacts of the Qi module (possibly it closed the board). If the problem persists, contact the service center - self-repair can aggravate the situation.

Setup of software

In some cases, after the adapter is connected, you may need to adjust the software so that the system correctly recognizes wireless charging.

Update MIUI to the latest version via Settings → About Phone → System Update.
Turn on Developer Mode: Go to Settings → About Phone. Tap 7 times on MIUI Version. Go back to Settings → Additional → Developer.
Activate the USB debugging option (sometimes this helps stabilize the adapters).

If the charge is still not recognized, try:

🔄 Reboot the phone.
🔌 Connect the adapter to another USB-C cable (possibly a problem with contacts).
📱 Reset network settings (Settings) → SIM-maps and networks → Resetting network settings).

💡

If the adapter warms up while charging, remove the case - this will improve heat sink and reduce the risk of overheating.

Table: Comparison of wireless charging methods for Redmi 9

Method	Difficulty	Cost	Charging power	Risks.
External Qi adapter	Low.	1500–3000 ₽	5–10W	Minimum (overheating with prolonged use)
Internal Qi module	Tall.	800–2000 ₽	7.5–10W	Loss of warranty, risk of damage to fees
Magnetic charge case	Medium	2000–4000 ₽	5W	Discomfort when using NFC
Charging station with holder	Low.	1000–2500 ₽	5–7.5W	The need for accurate positioning

As you can see from the table, the external adapter is the best option for most users, and the internal module is only suitable for those who are risk-averse and have experience in repairing.

Frequent problems and their solutions

Even after the adapter is installed correctly, there can be difficulties.

1.The phone does not charge wirelessly

Possible causes and solutions:

🔌 Faulty adapter: Check it on another device.
📵 Weak contact: Reconnect the adapter to USB-C port.
🔋 Battery discharged: Connect your phone to wired charging for 10-15 minutes, then try again.
🔄 FAIL: Restart the device or reset settings (Settings) → System system → Resetting settings).

2.The wireless charging is running slowly

Speed depends on several factors:

⚡ Charging station power: Use a station with support 10W (Xiaomi Mi Wireless Charging Pad).
📱 Background Processes: Close all applications before charging.
🌡️ Overheating: Remove the case and charge in a cool place.

⚠️ Warning: If the adapter or phone is too hot (more than 45)°C, stop charging immediately! Prolonged overheating shortens battery life and can cause it to bloat.

3. Charging interrupted

This may be due to:

📶 Unstable position: Make sure the phone is lying flat on the charging station.
🔌 Bad contact: Check if it is contaminated USB-C port.
📵 Cover interventions: Use thin covers (up to 3 mm thick) or remove them.

💡

If the problem is not solved, try another adapter or charging station.

FAQ: Answers to popular questions

❓ Can you damage Redmi 9 if you connect the Qi adapter incorrectly?

Yes, if the adapter is polarly disrupted or has a factory defect, it can short circuit or damage the power controller. Always buy Qi-certified adapters and make sure the connection is correct.

❓ Why wireless charging only works in a certain position?

This is because the receiver coil is in the adapter, and in cheap models, it can be shifted, so you have to put the phone in the center, and if the problem persists, try another adapter or FreePosition-enabled station (such as the Samsung Wireless Charger Duo).

❓ How long does it take to fully charge Redmi 9 wirelessly?

At 5W, it takes about 4-5 hours to fully charge a 5020 mAh battery. For comparison, a wired 18W charge can take 2-2.5 hours. To speed up the process, use a 10W station and charge your phone in aero mode.

❓ Can I use wireless charging with a case?

Yes, but with reservations: the thickness of the case should not exceed 3-4 mm. the material of the case should be non-metallic (metal blocks the signal); magnetic covers can interfere with the operation of NFC. The optimal option is cases made of silicone or thin plastic.

❓ Why the battery drains faster after installing a Qi adapter?

It's normal if the adapter is plugged in all the time. It consumes power even when not in use. To reduce consumption: Turn off the adapter when you're not charging your phone. Use adapters that auto-disconnect when you're fully charged. Check if the background processes are running (via Settings → Battery).