Owners of popular TWS-Headphones from the Xiaomi brand often face ambiguity of light display. The main device that requires constant monitoring of energy is the charging case, because it provides autonomy for your Redmi Airdots away from the outlet. Understanding the logic of the LED indicator is a key skill for the proper operation of the gadget.
Many users mistakenly believe that flashing light always means charging, but in reality, the algorithms of the microcontroller inside the case are more complex. LED indicator can signal various states, from active dialing capacity to complete discharge or even malfunction of contacts. To avoid situations where the headphones discharge at the most inopportune moment, you need to clearly know the color codes and blinking modes.
In this article, we will discuss in detail all the nuances of charging the case for models of the Airdots series, Airdots Pro and their modifications. You will learn why the indicator may not light up, how long to keep the device on the wire and what hidden functions of diagnostics through light signals exist.
Decoding of light indication on the case
The main way of communication between the charging case and the user is LED-Depending on the Xiaomi Redmi Airdots model, it can be located on the front panel or inside the headphone compartment.The color of the glow and the nature of the blink carry specific information about the current battery charge level.
When you plug a case into a power source, the indicator usually turns red, which is a standard signal that the charging process has started, and if the indicator lights up in white or green immediately after the cable is connected, it means that the battery case is already fully charged and ready to work.
It is important to note the differences in the behavior of the indicator for different versions of firmware and models. For example, in some revisions of Redmi Airdots 2, the red indicator burns constantly while charging and goes out when it reaches 100% capacity.
⚠️ Warning: If the red light flashes quickly after you connect to a charge, it may indicate a critical battery drain or overheating of the device.
For quick orientation in your device’s signals, check out the table below, which summarizes the main indicator states for most models of the line.
| Color of indicator | Rey's work. | Significance of state |
|---|---|---|
| Red (permanent) | On charging. | Active charging process is underway (level < 100%) |
| Red (flashing) | Mistake/Discharge | Critically low charge or contact error |
| White/Green | Full charge. | Battery charged 100% or headphones in case |
| Absent. | Anybody. | No power, cable malfunction or full discharge |
Full charge time and cables used
The rate of energy recharge in the case depends on the characteristics of the charger used and the quality of the cable. Standard models of Redmi Airdots are equipped with a Micro-USB port, while newer versions, such as Airdots Pro or Airdots 3, have moved to a modern USB Type-C connector. Using the original cable from the kit guarantees the optimal current transfer rate.
Usually a full charge cycle of an empty case takes from 1 before 1.5 However, if you use a powerful fast-charging smartphone power supply, the time may be shortened, but there is a risk of overheating the lithium cell. 1 Ampere (5V/1(A) for safe and durable operation.
If you notice that the case charges suspiciously long, for example, more than 3 hours, it is worth checking the cable. Cheap wires often have high resistance, which leads to a voltage drop and slowdown. Also make sure that the charging port on the case itself is cleared of dust and pile that could get out of your pocket.
You should pay special attention to wireless charging if your Xiaomi model supports this feature (for example, Airdots Pro). When using the Qi wireless platform, the process may take a little longer due to power loss during transmission, in which case the case may heat up slightly, which is a normal physical process.
Why does not the indicator burn when charging
When you plug in a cable, but the LED light doesn't show signs of life, it's one of the most common problems. The first and most common reason is often the cable itself, check it on other devices, or just replace it with one that's known to work. Often, fractures occur inside the insulation near the plug.
The second reason could be the deep discharge of the case battery. If the Redmi Airdots were lying unused for a long time, the battery voltage could drop below the activation threshold of the controller. In this case, leave the device on charge for 15-20 minutes. Sometimes the indicator lights up only after the battery has gained the minimum necessary charge for electronics.
⚠️ Warning: If the case does not respond to charging after using different cables and power supplies for more than 30 minutes, the battery or charge controller is likely to have failed.
It's also worth checking the contact group inside the case, and over time, the copper contacts that the headphones press against can oxidize metal or accumulate dirt, which causes the case to "see" the headphones or not be able to correctly display their status, although it can charge itself.
How do I clean the case contacts?
How the headphones inside the case are charged
The logic behind charging the headphones inside the case also has its own peculiarities: When you put Redmi Airdots in the case, they should automatically start charging from the case's built-in battery, and the indicator on the case can briefly catch fire at this point, confirming contact, and then go out or change color.
If the headphones don't charge in the case, the problem may be the magnets. The headphones are magnetically attracted to fit properly. If the magnet is weak or the socket has accumulated dust, there is no contact between the pins on the headphones and the pins in the case. Visually check if the headphones fit tightly to the case.
It is important to understand the difference between charging the case itself from the network and charging the headphones from the case. The indicator on the case primarily shows the battery status of the case. The charging status of the headphones is often displayed only when they are removed or through the application on the smartphone, although some models can flash white if the headphones inside are discharged.
- 🔋 Make sure the headphones are properly oriented in the sockets (magnets must attract them).
- 🧹 Regularly wipe contact areas with alcohol to remove oxides.
- 📱 Check the charge level of the headphones through the Bluetooth widget on the phone.
- 🔌 Do not keep a case with fully discharged headphones inside for a long time.
☑️ Checking headphone charging
Charging features of different models Airdots
Xiaomi Redmi Airdots has many modifications, each with its own nuances. The classic Airdots 1 and Airdots S have an indicator only on the outside of the case, which lights up red when charged and fades when fully charged. They have no display or complex lighting effects.
Airdots Pro (Mi True Wireless Earbuds Basic 2) models feature a more advanced display system, often located between headphone compartments and can glow white or orange, with orange usually signaling low charge levels (<10%) and white signaling high charge levels.
Newer versions, such as the Redmi Buds 3 Lite or Airdots 3 Pro, may not have a visible indicator on the case when it is turned off, activating it only when the lid is opened or the cable is connected. This is done to save energy and design aesthetics. In such cases, the charging status is easiest to know by connecting the headphones to the phone.
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To extend battery life, don't keep the case on charge all the time after the indicator has gone out or lit up white. Although controllers cut off the current, prolonged exposure to 5V is undesirable for battery chemistry.
Frequent problems and ways to solve them
Even when properly operated, users may experience software or hardware failures. If your case has stopped showing the correct charging status, try resetting the settings. This often requires pinching touch areas on headphones or using a special button on the case (if designed).
The false charge problem occurs when the indicator shows full charge but the headphones discharge in 10 minutes, a sign of battery degradation inside the case. Lithium polymer cells lose capacity over time, especially if the device has often been completely discharged or heated.
In some cases, flashing the headphones through the official Xiaomi Earbuds or Mi Wear app helps. Microcode updates can correct errors in charge level algorithms that are sometimes found in early batches of devices.