Why Xiaomi headphones are discharged quickly: a complete analysis

The situation when your favorite wireless headphones stop holding the charge, familiar to many owners of equipment Xiaomi and Redmi. Until recently, the device worked confidently 4-5 hours, and now discharges in an hour or does not turn on without a charging case. This is not always a sign of failure, often lies in the features of operation or software failures.

Owners of Mi True Wireless Earbuds and Redmi Buds have a regular problem with lithium polymer batteries used in headsets, which have a limited lifetime of charge cycles. However, if the device is less than a year old and the autonomy has fallen critically, it is worth looking deeper, perhaps to blame background processes or the wrong temperature regime.

In this article, we will discuss in detail why Xiaomi headphones have become quickly discharged, and how to fix the situation yourself. We will not use complex technical terms without explanation, but we will discuss the physical and software aspects of the work. TWS-Understanding the principles of battery life will help extend the life of the gadget for many months.

Natural battery wear and cycle life

The most common, but inevitable, cause is the physical wear and tear of a chemical battery, and inside each headphone is a tiny battery that degrades over time. 300-500 If you charged your headphones every day for a year, the capacity could drop to 70-80% primordial.

Also, the rate of degradation is affected by the depth of discharge: constant use of the gadget “to zero” or, conversely, storage on charging for days kills the battery faster. In Xiaomi Air 2 or AirDots devices, the power controller may incorrectly display percentages, showing 100% when the actual charge is left little.

The electrolyte inside the cell is strongly affected by temperature changes, and summer heat of +35°C or winter frost of -10°C when carried in a pocket without protection causes irreversible changes in the structure of the anode and cathode, which leads to a sharp drop in stress under load.

⚠️ Note: If the headphones are more than two years old and they are actively used, the fall in autonomy on the headphones. 40-50% It is a natural physical process that cannot be fixed by software.

The quality of the batteries themselves in budget models should also be considered: Redmi Buds 3 Lite series or early AirDots could have installed elements with less life than the flagship Mi True Wireless Earbuds Pro. This is a marketing strategy, but it affects durability.

Software glitches and Bluetooth background processes

Often the problem is not hardware, but software, and a smartphone may mismanage the power savings of a connected device, such as a MIUI or HyperOS system, which can constantly poll the battery status of the headphones, sending packets of data even when they are simple, which makes the Bluetooth module work in a high-speed mode.

Another common reason is that the connection is stuck, and the headphones may not go into sleep mode when you remove one or put it in a case, but they don't close the lid tightly. The proximity sensors in models like the Xiaomi Buds 4 Pro can become contaminated with earwax, which makes the gadget "think" it's still in the ear and continues to waste energy.

The firmware bugs of the headphones themselves are also not to be discounted. Early versions of Mi True Wireless Earbuds Basic 2 software have experienced memory leaks that result in quick discharge. Updating firmware often solves such problems by optimizing the controller.

It’s also worth checking the settings of the smartphone itself. If you have High Performance or Game Mode enabled, the system can prioritize connection stability over energy saving, ignoring Bluetooth Low Energy’s energy saving protocols.

The impact of codecs and sound quality on autonomy

Many users forget that the quality of the audio transmitted directly affects power consumption. Using advanced codecs such as AAC, aptX or LDAC requires more intensive work of the processor inside the headphones to decode the flow. In Xiaomi FlipBuds Pro models, switching to LDAC can reduce the running time by 20-30%.

If you listen to music at maximum quality through streaming services (for example, Hi-Fi in Yandex.Music or Lossless in Apple Music), the load on the DAC (digital-to-analog converter) and the amplifier increases. Budget models such as Redmi Buds 4 Active may not be able to effectively decode heavy formats, wasting charge.

Active noise cancellation (ANC) is the battery's main enemy. When this feature is turned on, the microphones work constantly, analyzing external noise and generating antiphase. In ANC mode, Xiaomi Buds 3T Pro headphones discharge almost twice as fast as in normal mode.

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Using an SBC codec instead of an AAC or LDAC can increase headphone life by 15-20%, although the sound quality will be slightly lower.

Also, you should consider volume. The speakers are 90-100% loud, and they require a lot of battery current, and if you're constantly spinning the sound to the maximum, the amplitude of the membrane's vibrations is maximum, which is energy-intensive.

Problems with charging case and contacts

Sometimes it seems like the headphones are running out, but the problem is the case, and if the contacts on the case or on the headphones themselves are oxidized or contaminated, the device may not charge to 100%. You take them out of the case, the indicator shows full charge, but after 10 minutes they sit down. This is the "memory effect" or false display of charge level.

There's also a battery inside the case, and if it's worn out, it can't pass the full charge cycle to the headphones. The Mi True Wireless Earbuds 2 Basic models got married when the case stopped charging the right earphone because of the bad fit of the pins.

Use only certified cables and units to charge the case. Cheap AliExpress charging can give unstable voltage, resulting in incomplete charge or damage to the power controller inside Xiaomi.

Look at the LED lights, if you put your headphones in a case, if you flash randomly or don't light up at all, you're in the contact group, and if you try to press your headphones slightly with your fingers, if the light is on fire, it's mechanical contact.

Comparison of autonomy of popular Xiaomi models

To see if your device's discharge rate is normal, compare it to other models of the brand. The range of running time can be significant due to different battery capacity and energy efficiency of the chips.

As you can see from the table, having active noise cancellation reduces your operating time by an average of 30%, and if your readings are significantly lower than the tabular (for example, 2 hours instead of 4-5), this is a cause for concern.

It is worth considering that the manufacturers’ tests are carried out in ideal conditions: volume 50%, one channel, temperature 25 ° C. In real life, especially in the cold or at high volume, the numbers will be smaller.

Recovery methods and battery calibration

There is a software calibration method that helps the controller re-determine the actual battery capacity. This will not restore the chemical composition, but will remove percentage jumps (for example, when the charge drops from 40% to 5% per minute).

Another effective way is to reset to factory settings, which will clear the pairing cache and possible software errors, and on most Xiaomi and Redmi models, this is done by clamping the touchpads of both headphones for a long time (10-15 seconds) until the indicator flashes white or orange.

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To calibrate the battery, leave the headphones in the case on charge for another 30-60 minutes after the indicator shows 100%, which will help to align the balance of the cells.

If software methods don't work, you might need to replace the battery. In service centers, this is difficult because of the tinyness of the cells, but it's possible. However, it's cheaper for low-end models to buy new ones than to repair old ones.

⚠️ Warning: Do not attempt to open the headphone case yourself if you do not have experience with micro soldering.You can damage the fragile plumes or speaker membrane, after which the device becomes non-repairable.

Regular cleaning of the speaker grids and contacts also prolongs the life of the device. Earwax is a dielectric and can block the operation of the sensors, which leads to improper energy consumption.

How to extend the life of the battery in the future

To keep the new headphones lasting longer, follow simple rules of operation: try not to discharge them completely too often; the optimal range for lithium batteries is between 20% and 80%; do not keep the device long discharged, this causes deep discharge and irreversible chemical reactions.

Avoid overheating. Don't leave your case with headphones in the sun, on the dashboard of your car, or near heat sources. High temperatures are the main enemy of lithium-ion chemistry.

Turn off functions you don't use. If you don't need noise cancellation in a quiet office, turn it off. If you don't use a voice assistant, turn it off on the button. That saves you a charge.

Compliance with these guidelines will allow you to enjoy quality sound for much longer, pushing back the time of buying a new headset.