How to know the charge of wireless headphones Xiaomi Airdots 2: all working methods

Xiaomi Mi True Wireless Earphones 2 (known as Airdots 2) remain among the most popular budget headphones. TWS-But their minimalist design hides one unpleasant feature: the manufacturer did not provide a direct display of the percentage of charge on either the case case case or the standard settings of the smartphone. This creates confusion – how to understand how much more headphones will work and when to put them on charge?

In this article, we'll look at all the current ways to test your charge, from the obvious (case indicators) to the hidden (android and iOS commands), how to tell the different charge levels by the color of a light bulb, what apps show the exact percentages, and why sometimes your headphones suddenly turn off at 20 percent charge, and also a table of compatibility with different versions of firmware and smartphones.

If you’ve just bought an Airdots 2 or are faced with it being too fast, this guide will help you avoid common mistakes, such as many users confusing the case charge indication with the headphones themselves — and these are fundamentally different things.

We've warned you beforehand that some of the methods require you to connect your headphones to your smartphone, and some even install third-party apps, but don't worry, we've found the simplest ways that 90 percent of owners will work, and we'll start with the basic ones, which don't require any extra action.

Indicators on the case: what do colors and blinks mean

The most obvious way is to look at the LED light on the front of the charging case, but here's the first trap: the light bulb only shows the charge of the case, not the headphones themselves, and to know the battery level of the headphones, you have to take them out of the case, and then the indication changes.

Here's what the indicator signals mean:

• 🟢 Green light (constant) – the case is charged by 60-100%, headphones (if you get it) – by 30-100%.
• 🟡 Orange light (constant) – case: 20-60%, headphones: 10-30%.
• 🔴 Red light (constant) - case: 0-20%, headphones: 0-10!
• 🔄 Blinking white – headphones connected to a smartphone (does not show charge).
• 🔋 Flashing red – critically low case charge (less than 5%), headphones may not charge.

Important: If the indicator does not burn at all, it can mean:

1. The case is completely discharged (it takes at least 10 minutes to charge the indicator to catch fire).
2. Contact or battery failure (check cable and port) USB-C).
3. The headphones are not properly placed in the nests of the case (try to shift them).

💡 Lifehack: To quickly check the charge of the headphones, take them out of the case and look at the indicator:

• 🟢 Green - 30-100%
• 🟡 Orange - 10-30%
• 🔴 Red - 0-10%

But remember: this method only works if the headphones are not connected to the phone at the time of the check.

⚠️ Note: Some Airdots 2 batches (especially those released before 2020) may have different displays, such as red, which may mean a charge below 15% rather than 10.

2 Voice Alerts: Truth or Myth?

It is often reported that Xiaomi Airdots 2 can voice the charge level when connected to a phone, but in fact it does not work on all devices and depends on:

• Headphone firmware versions (updates after 2021 more often support the function).
• Smartphone models (on Xiaomi/Redmi s MIUI 12+ higher).
• Regional settings (in China, the function is disabled by default).

How to check if your headphones support voice alerts:

1. Connect Airdots 2 to your smartphone.
2. Take the headphones out of the case - the connection signal should sound.
3. If you hear a phrase in Chinese or English (e.g., "Battery low"), it means that the function is active.

If there are no alerts, you can try to wake up the function:

Reset the headphones to the factory settings (press the button on the case for 15 seconds)

Update your firmware through the Mi Home app (if available)

Connect headphones to the Xiaomi smartphone on MIUI 13+

Try changing the region in the Bluetooth settings to "China"-->

📌 Important: Even if alerts work, they only give critical levels (usually 10% and 5%), but not the exact percentage.

3. Charge check via smartphone: Android vs iOS

Android and iOS smartphones display information about connected devices differently, and let's look at both.

Android (MIUI, Samsung, Pixel, etc.):

1. Open Settings → Bluetooth.
2. Find Mi True Wireless Earphones 2 and tap the icon ⚙️ (gear).
3. In some firmware (for example, MIUI 12.5+) A line "charge level" will appear with percentages for each headphone and case.

🔹 If there is no interest, try it:

• 📱 Install the Mi Home app (about it below).
• 🔄 Reconnect the headphones (forget the device) → plug in).
• 🛠️ Update the firmware of the smartphone (on older versions of Android, the indication may not work).

On iPhone (iOS 14 and later):

• 🍎 Open the Control Point (swipe down from the upper right corner).
• 🔳 Hold your finger on the Bluetooth block (not on the icon, but on the block itself!).
• 📊 A list of devices with a charge indicator will appear (if supported).

⚠️ iOS Limitation: Apple only shows charge for certified devices. Airdots 2 is not on the official list, so on iPhone this method works in less than 30% of cases.

4.Mi Home app: hidden opportunities

The official Mi Home app (available for Android and iOS) is the only legal way to get exact percentages of headphones and case charges.

• 🌍 The app must be Chinese or global (not all regions support Airdots 2).
• 🔄 Headphones must be connected to Xiaomi account (without authorization function does not work).
• 📱 On iOS, the application shows the charge of only the case, but not headphones.

Step-by-step:

1. Download Mi Home from Google Play or App Store.
2. Sign in to your Xiaomi account (or create a new one).
3. Connect Airdots 2 to your phone via Bluetooth.
4. In the appendix, tap "Add device" → "Headphones" → Choose Mi True Wireless Earphones 2.
5. After connecting on the main screen will appear card with percentage charge headphones and case.

🔍 What to do if the app does not see the headphones?

• 📋 Check that the headphones are not connected to another device.
• 🔄 Reboot Bluetooth on your phone (Settings) → Bluetooth → Off./On.).
• 📦 Remove the headphones from the list of devices and connect again.
• 🌐 Try changing the region in the Mi Home profile to “China” (in your account settings).

⚠️ Note: In 2023, Xiaomi began restricting the functionality of the Mi Home for older devices.If your Airdots 2 is released before 2021, the app may not show charge or require a firmware update.

💡

If Mi Home doesn’t work, try third-party apps like Battery Monitor for Bluetooth (Android) or AirBattery (iOS) that aren’t always accurate, but often show at least an approximate level.

5. Secret Commands and Engineering Menu

For advanced users, there's a way to check the charge through hidden commands, which runs on Android smartphones and requires additional software to be installed.

Method 1: via nRF Connect (for technical data)

Method 2: Through ADB-Teams (for experienced teams)

If you are willing to use ADB, execute:

adb shell dumpsys battery


adb shell dumpsys bluetooth_manager

In the output, find the lines from the level, which will be the charge level, but this method is unstable and does not work on all firmware.

⚠️ Note: Use of nRF Connect or ADB This can cause headphones to malfunction if you interrupt the connection while reading data!

Indirect signs of headphone discharge

If none of the above methods worked, pay attention to the behavior of headphones – it often signals low charge:

• 🔊 Sound deterioration: at a level below 15%, basses become quieter, wheezing appears.
• 🎵 Unintentional shutdown: Headphones can turn off when 10-20% charge (especially in cold weather).
• 🔋 Slow charging: if the case charges for longer than 2 hours, its battery is worn out.
• 📶 Unstable connection: at low charge, headphones begin to “brake” and lose communication with the smartphone.

📉 How to check the wear of the battery?

If the Airdots 2 discharges in 1-2 hours instead of the declared 4, most likely the battery has degraded.

1. Fully charge the headphones and case.
2. Play the music at 70% volume.
3. Set the time to full discharge: ⏳ 3.5-4 hours – battery normal. ⏳ 2-3 hours – average wear (calibration required). ⏳ Less than 2 hours – critical wear (replacement required).

🔋 How to Calibrate the Battery?

If the headphones are quickly discharged, try the calibration procedure:

Completely discharge the headphones (before switching off)

Put them in the case and discharge the case to 0% (the light bulb will go out)

Charge the case with headphones for 12 hours without a break

Repeat the cycle 2-3 times-->

💡

If the calibration time has not improved, the battery is physically worn out, in which case only replacing the battery at the service center (cost) will help. ~1500–2000 ₽).

7. Frequent mistakes and how to avoid them

Many users make the same mistakes when checking the charge of Airdots 2.

• 🔌 The charge of the case and the headphones are confusing: the indicator on the case shows only its battery, not the headphones.
• 📵 Ignore firmware updates: on older versions, voice alerts and display in Mi Home may not work. Update your headphones through the app.
• 🔋 Charge headphones "on the go": if you use headphones while charging in a case, the battery wears out 2 times faster.
• 🌡️ Keep headphones in cold / heat: the optimal temperature is 10-35°C. Pri. −10°The battery can run out in an hour, and +40°C - swell.
• 🔄 Do not reset the settings after failures: if the headphones are glitching (do not connect, discharge quickly), do a reset: press the button on the case for 15 seconds.

🚨 Top.-3 Signs that it is time to change the battery:

1. Headphones discharge in less than 1.5 hours when playing music.
2. The case charges more than 4 hours (normally - 1.5-2 hours).
3. The indicator shows 100%, but the headphones work less than 3 hours.

⚠️ Warning: If the Airdots 2 case has stopped charging, check the contacts inside the headphone nests. Often they become oxidized or contaminated - gently wipe them with a cotton swab dipped in alcohol.

FAQ: Answers to Frequent Questions