Owning a wireless headset from Xiaomi or Redmi is often accompanied by a question about the current battery status, especially when the headphones are inside the case. Understanding how to know if Xiaomi Airdots have charged is critical to planning to listen to music throughout the day.The lack of screens on the devices themselves is offset by an LED display system, which, however, requires proper user interpretation.
The charging process in this line of gadgets is implemented through the contact pads inside the case, which imposes certain requirements for the purity of contacts. Unlike more modern models with wireless charging, physical contact plays a crucial role in the transfer of energy, which is why visual indication on the case is the only reliable source of information about energy storage.
In this guide, we will take a closer look at the behavior of indicators across generations of devices, including Mi True Wireless Earbuds Basic and their modifications, learn how to distinguish between low-charge signals, charging and full-saturation battery, and learn how to extend the life of lithium polymer batteries.
Decoding of LED case indication
The main communication tool between the device and the user is the LED indicator located on the front panel of the charging case. To find out that Xiaomi Airdots have charged, you need to carefully monitor the color and burning mode of this LED. Depending on the case model, the indicator can be one or two, and also vary in color of the glow.
Most standard models, like the first version of AirDots, use one white indicator. When you put the headphones inside and close the lid, the indicator lights up, signaling the start of the process. If the indicator is constantly red, this means that the batteries are actively charging. Once the battery reaches 100%, the red color changes to white, and the indicator goes out or continues to burn white depending on the version of the controller's firmware.
⚠️ Note: If the case indicator flashes red when installing headphones, this often indicates poor contact or critically low charge of the case itself, rather than the headphones.
More advanced versions, like AirDots Pro or Earbuds Basic 2, have two indicators or more complex logic of one indicator. It's important to understand that the indicator on the case shows the charge of the case, not the headphones, unless the headphones are inside at the time of the check. Some models allow you to check the rest of the energy of the case with a double press on the function button.
- 🔴 Red burns - there is an active charging of headphones or the case itself from the network.
- ⚪ White burns – battery fully charged or higher charge level 50-60%.
- 🔴 Miguel: critical battery discharge or contact error.
- 🔵 Blinking - pairing mode (activated by long button retention).
It is worth noting that the behavior of the indicator may vary slightly depending on the regional version of the device. Chinese versions (CN) sometimes have a different logic from global (Global) blinking, which is worth considering when buying a device on international platforms.
Indication on the headphones themselves
Beyond the case, the headphones themselves are an important source of information, and you can also find out if Xiaomi Airdots are charging by their behavior, although this is less convenient because it requires the devices to be removed from the case. Each earphone has its own miniature LED that reports its status.
When you take the earpiece out of the case, it automatically turns on. If the headphone light is red for a few seconds after removal, it's a sure sign that the battery is discharged and requires immediate recharging. In normal condition, when removed, the indicator should either not burn at all, or flash briefly white or blue, signaling readiness to work or connect to the smartphone.
When charging inside the case, the headphones themselves don't usually burn to keep the user out of power or interfere, but in some cases, when the case lid is opened, the headphones light up briefly, showing residual charge, for example, double flashing in red can mean less than 30% charge.
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If the headphone does not emit an audible signal of inclusion when extracting, but the indicator is burning red, a software failure may have occurred - try resetting the headphones to the factory ones.
It is important to distinguish between the modes of operation of the indicator on the earphone. The constant burning of red during operation (outside the case) is an alarm signal that requires the end of the session and installation in the case. At the same time, flashing red and white alternately often indicates a mode of searching for a device for pairing.
Full charge time and battery capacity
One of the key parameters that influence the understanding of charging is the time it takes to fully recover capacity. Most AirDots models have a small battery capacity, which leads to relatively short charging cycles.
The average charge time for the headphones inside the case is about 1-1.5 hours, which means that if you put the discharged headphones in a charged case, after an hour and a half they should be ready to work. The charge of the case itself from the network adapter takes longer — usually from 2 to 3 hours, depending on the power of the current source.
Below is a table with indicative time indicators for popular models:
| Model of the device | Headphone capacity (mAh) | Case capacity (mAh) | Headphone charging time | Case charging time |
|---|---|---|---|---|
| AirDots Basic | 40-43 | 300 | ~1.5 hours | ~2.5 hours |
| AirDots 2 | 43 | 300 | ~1.5 hours | ~2.5 hours |
| AirDots Pro | 55 | 470 | ~1.5 hours | ~3 hours |
| Redmi Buds 3 | 45 | 410 | ~1 hour | ~2 hours |
It is worth considering that using powerful chargers with support for Quick Charge or Power Delivery does not always speed up the process, since the power controller in budget models can limit current to 1A or even 0.5A for safety.
Indication problems: why the indicator does not burn
The situation where the user puts the headphones in the case, connects it to the network, but the indicator does not light up, is common. This can cause panic and false impression that the device is not charging. However, there may be several reasons for this behavior, and not all of them indicate a breakdown.
The first and most common cause is the deep discharge of the case battery, and if the device was left unused for several months, the lithium polymer battery could go into protection, in which case the indicator may not catch fire immediately, you need to leave the case connected to the network for 15-30 minutes, after which the indication should appear.
The second reason is contamination of the contact pads: there are metal contacts at the bottom of the case and on the legs of the headphones; the ingestion of earwax, dust or oxidation of metal disrupts the circuit; as a result, the case controller does not see the headphones and does not start charging them, and the indicator behaves incorrectly.
- 🧹 Wipe the contacts with a dry lilaless cloth or cotton swab lightly moistened with alcohol.
- 🔌 Use a different cable. USB, Preferably original or certified.
- 🔋 Check the power supply by connecting another device to it.
- 🔄 Try to press the headphones slightly with your fingers inside the case to improve contact.
⚠️ Warning: Never use metal objects (needles, paper clips) to clean contacts to avoid short circuits or mechanical damage to elements.
How to check the exact percentage of charge on a smartphone
LED displays only give a rough idea of the status (charged/uncharged) but don't give an exact number. For users who want to know the exact percentage, there are ways to display this information on a smartphone screen, and this is especially true for Android owners.
Xiaomi smartphones with a MIUI shell or HyperOS often have built-in support for the brand’s headphones. When connecting AirDots to your phone, on the lock screen or in the notification curtain, a widget with a picture of the case and headphones can appear, where the exact percentage of charge for each element is specified separately. To activate this feature, you need Bluetooth to be on and the headphones are paired.
For other devices, or if the automatic window doesn't appear, you can use third-party applications. A popular solution is the Xiaomi Earbuds or Material Pods application, which reads data from the Bluetooth protocol and visualizes it in a convenient way.
The Secret of MIUI Widgets
Also worth mentioning is the desktop widgets, and in MIUI, there's a "Bluetooth" widget that, when added to the desktop, can display the charge level of the connected audio devices, so you can control status without opening the notification curtain.
Charging features of different generations of Airdots
As AirDots evolved, not only did the sound characteristics change with each generation, but the logic of the power system changed, and understanding these differences helps to avoid confusion in the display.
The first generation (AirDots Basic) is different in that the indicator on the case only lights up when the headphones are placed inside. If the case is empty, the indicator will not burn, even if it is connected to charging (in some revisions), which often confuses users who think that the case is not charging.
AirDots 2 and Redmi AirDots have a smarter controller, and here the indicator can briefly light up when the lid is opened, showing the rest of the case charge: one blink is small, two is medium, three is full, and this feature allows you to quickly assess the need to charge the case without connecting to the network.
Top-end models like the AirDots Pro have introduced wireless charging support, and in these cases, the indication may behave differently when installed on a Qi charging base. LED-lighting.
☑️ Check before buying used Airdots
Recommendations for extending battery life
To make sure that the question of “how to know that Xiaomi Airdots are charged” is not a problem due to battery degradation, it is important to operate the device correctly.
Keep your headphones in the case as soon as the indicator starts to signal a low charge level, and storing a fully discharged device for a long time can lead to an irreversible drop in capacity.
Temperature is also critical. Don't leave a case with headphones in the direct sun or in the car on a hot day. Overheating destroys the chemical structure of the battery faster than charging cycles. The optimal temperature to charge is room temperature.
⚠️ Note: Do not use damaged cables USB for charging the case, voltage surges can bring the power controller out of action, and the indicator will stop lighting up forever.
The regular cleaning of the contacts mentioned earlier also contributes to stable charging, with oxidized contacts creating resistance, heating and incomplete charge, which in the long run harms the battery.
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The Golden Rule: For maximum durability, keep the case charge and headphones in the range of 20% to 80%, avoiding extreme values if possible in everyday use.