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

Xiaomi Redmi 9 is a popular budget smartphone with excellent value for money, but many users are faced with the question: does it support wireless charging? In this article, we will understand how to activate the feature, which devices are compatible with Redmi 9, and what to do if charging does not work.

Let's just say, the Redmi 9 (codenamed lancelot) doesn't officially feature a Qi wireless charging module. However, there are workarounds, from adapters to firmware modifications. We'll look at all the options, including their pros and cons, so you can choose the optimal solution.

Does Xiaomi Redmi 9 support wireless charging?

The official specifications of Redmi 9 do not include support for the Qi standard, as confirmed by Xiaomi documentation and tests of independent experts.

• 🔋 Hardware limitation: the smartphone does not have an induction charging coil, necessary to work with wireless stations.
• 🔌 Alternative solutions: You can use wireless charging receivers (adapters) that connect to the connector USB-C.
• ⚠️ Modification risks: Some users experiment with firmware, but this can lead to loss of warranty or unstable operation of the device.

If you want to know for sure if your Redmi 9 supports wireless charging, check out:

1. Smartphone model in Settings → The phone. → Model (should be) M2004J19C or similar).
2. The Qi Wireless Charging label on the box or in the documentation (it will not be there).
3. Disassembly of the device (not recommended without experience) – the absence of a coil under the back cover will confirm the lack of support.

⚠️ Note: Using uncertified adapters for wireless charging may cause battery overheating or port damage USB-C. Before buying, check the reviews about a specific receiver model.

How to enable wireless charging on Redmi 9

Since Redmi 9 does not support Qi charging out of the box, let’s look at the available methods:

1. Use of a wireless charging adapter

The easiest and safest way is to purchase a wireless charging receiver that connects to the port. USB-C. This adapter consists of:

• 🔌 Stecker USB-C (plugged in).
• 📶 Induction coils (attached to the back of the smartphone).
• 🔋 Magnetic fastening (for fixation at the charging station).

Popular models of adapters:

Instructions for connection:

Put the plug in. USB-C port|

Attach the coil to the back panel (preferably under the cover)|

Place your phone at a Qi charging station|

Make sure the charging indicator is on fire.-->

⚠️ Attention: Adapters with power above 10 W can cause overheating Redmi 9. The best option is devices at 5-7.5 W. Also avoid using a smartphone while charging - this increases the load on the battery.

2. firmware modification (for advanced users)

Some enthusiasts claim that you can unlock hidden wireless charging support by changing system files.

• ⚠️ Requires unlocking the bootloader (loss of warranty).
• 🔧 Need root rights and experience with ADB.
• 🚫 Risk of “bricking” the device (turning into a “brick").

If you do, then the algorithm of actions:

1. Unlock the bootloader through the Mi Unlock Tool (the official Xiaomi tool).
2. Install custom recovery (TWRP).
3. Sweat a modified kernel with Qi support (if there is one for your model).
4. Check the wireless station.

3.Use of a battery case and Qi module

Alternatively, there are cases with built-in battery and wireless charging.

• 🔋 Xiaomi Mi Power Bank Case (if released for your model).
• 📱 Battery cases from third-party manufacturers (for example, Anker or RAVPower).

Pros:

• ✅ Additional battery capacity (usually 3000-5000 mAh).
• ✅ Compatible with standard Qi stations.

Cons:

• ❌ Increases the thickness and weight of the smartphone.
• ❌ Requires periodic charging of the cover itself.

How to check if wireless charging is working?

Once you've connected the adapter or modified the firmware, you need to make sure that you're charging, and you can do this in a number of ways:

1. Visual indication: a charging icon (lightning or Qi icon) should appear on the lock screen.
2. Audible signal: Some adapters emit a short sound when charging.
3. App Check: Install a utility like AccuBattery or Ampere to track the charging current.

If charging does not start:

• 🔄 Reboot your smartphone.
• 🔌 Check the cable and charging station (try another device).
• 📱 Make sure the adapter fits tightly to the back panel.
• 🔋 Disable battery optimization for applications in Settings → Battery.

💡

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

Compatible chargers for Redmi 9

Not all wireless charging stations are suitable for the Redmi 9, especially if you use an adapter.

When choosing a charger, pay attention to:

• 🔌 Compatibility with Qi standard (must be indicated on the packaging).
• 🔋 Power: 5-10 W is optimal for Redmi 9 (above is the risk of overheating).
• 🛡️ Overcharge Protection (Temperature Control, Overcharge Protection).

💡

Even if you use an adapter, wireless charging speeds will be lower than wired charging speeds. For the Redmi 9, the maximum power is usually no more than 7.5 watts (versus 18 watts for the original RAM).

Frequent problems and their solutions

When using wireless charging on Redmi 9, the following difficulties may arise:

1.The phone is not charging.

Possible causes and solutions:

• 🔌 Bad Adapter Contact: Check if the plug is tightly inserted USB-C.
• 📵 Faulty charging station: Try another device.
• 🔋 Battery discharge: sometimes adapters fail at charge levels below 5%. Connect wired RAM for 10-15 minutes.
• 🛠️ Damaged adapter: inspect the coil for cracks or breaks.

2.The phone is warming up

Overheating is a common problem when wireless charging, to avoid it:

• 🌡️ Take the case off your smartphone.
• 📵 Do not use your phone while charging (especially resource-intensive apps).
• 🔌 Place the charging station in a ventilated place.
• ⚡ Reduce the charging power (if the station supports adjustment).

3. Slow charging

Wireless charging is always slower than wired charging, to speed up the process:

• 🔌 Use a charging station with Quick Charge support (if the adapter is compatible).
• 📵 Close all background applications.
• 🔋 Turn on the flight mode (reduce the load on the processor).

⚠️ Warning: If the smartphone starts to run out quickly after the adapter is connected, this may indicate a malfunction of the power controller.

Wireless and wired charging comparison for Redmi 9

Before you switch to wireless charging, evaluate its pros and cons compared to the traditional method:

Wireless charging is justified if:

• 🔌 You often forget to connect the cable.
• 📱 Port port USB-C staggered.
• 🛋️ You are comfortable charging your phone on your desktop or bedside table.

Wire charging is preferred if:

• ⚡ Speed is important.
• 🔋 You often discharge your phone to zero".
• 💰 You don’t want to spend money on additional accessories.

FAQ: Answers to Frequent Questions