Owners of wireless headsets from the Chinese giant often face the need to quickly recover charge to continue listening to music or talking. Proper charging is a key factor in the long-life of the battery, so it is important to follow certain rules of operation of the device. TWS-Headphones require careful attention to the case and contacts.
Many users mistakenly believe that the process is absolutely the same for all models, whether it is a budget Redmi Buds 3 Lite or advanced Redmi Buds 4 Pro. However, there are nuances that affect the rate of energy replenishment and battery health. The optimal current for charging most Redmi models is 1 Amp, the use of powerful power supplies for smartphones may not speed up the process, and in rare cases cause overheating.
In this article, we will take a look at all aspects of the power supply of your headsets, you will learn about the types of connectors, latency and how to diagnose problems when the indicator is silent, and we will also touch on the topic of wireless charging, which is available in flagship versions.
Design features and types of connectors
The first thing to decide on before connecting a cable is the type of interface installed on the charging case. Xiaomi has produced models with different connection standards over the years, and confusion is unacceptable here. Older or budget versions, such as the first-generation AirDots, were often micro-equipped.-USB port that requires careful handling.
Modern lines, including Redmi Buds 3 and newer, almost everyone has switched to the universal USB Type-C. This greatly simplifies the life of the user, allowing you to use one cable for a smartphone and headset.
- 🔌 Micro-USB: Found in models until 2021, requires precise positioning of the plug.
- ⚡ USB Type-C: Modern standard, supports charging in any position of the plug.
- 📡 Wireless Charging: Wireless Qi technology available in Pro and Active versions.
Some users try to force the cable into the wrong format, which causes the contact group inside the case to break. If the plug doesn't come in freely, don't make any effort -- you may have a different standard cable in your hand. Always visually check the shape of the connector before connecting.
Basic instruction: step-by-step charging of the case
The process of replenishing the energy in the charging case is the primary step, because it is the case that powers the headphones themselves when they are inside. First, you need to take an original or certified cable that comes with the device. Using cheap analogues can lead to unstable operation of the power controller.
Connect the smaller side of the cable to the corresponding port on the case, and the larger one to the power source. USB-port of a computer, laptop or network adapter. 5V/1A or 5V/2A is the most preferred option for stable work.
☑️ Pre-charging check
When you connect the components, look for an LED light, which in most Redmi models is lit in red or orange to signal the process. If the light doesn't catch fire, try moving the cable slightly or rubbing the contacts with dry cloth.
⚠️ Note: Do not use fast charging units from flagship smartphones (for example, do not use fast charging units, 65W, 120W), If the headphone instruction manual does not explicitly specify such a mode, although controllers usually limit current, the risk of overheating of the lithium polymer battery in a small case volume remains high.
Indication and charging time of different models
Understanding the signals your device is sending helps to monitor battery health and avoid unpleasant surprises like a discharged headphone at the right time. LED light is the main source of status information. Color and blinking mode can vary depending on the model, but the general principles remain.
The time it takes to fully recover the capacity depends on the battery capacity of the case and the headphones themselves. Usually, the full cycle takes from 1 to 2 hours. The headphones inside the case charge much faster, often having time to gain full charge while you shower or drink coffee.
| Model headphones | Case charging time | Headphone charging time | Type of indicator |
|---|---|---|---|
| Redmi Buds 3 Lite | ~1.5 hours | ~40 minutes. | Hidden in the button |
| Redmi Buds 4 | ~2 hours | ~50 minutes. | LED outside |
| Redmi Buds 4 Pro | ~2 hours | ~1 hour | Digital (in the annex) |
| AirDots 2 | ~1.5 hours | ~40 minutes. | Red/Blue |
It's worth noting that fast charging in some models allows you to get a few hours of playback in just 10-15 minutes in the case, a critical feature for active users who can't wait for a full cycle, but for daily use, it's better to charge the device fully to calibrate the controller.
What do the color of the indicator mean?
How to properly charge the headphones themselves
Sam Sam Sammy. TWS-The headphones don't have external ports to connect the cable, because that would disrupt their water protection and ergonomics, and the only way to transfer power to them is to put them in a charging case. Contact is carried out through special metal pads (pins) on the bottom of the headphones and response spring-loaded contacts inside the case.
To start charging, just put the left and right modules in the corresponding recesses of the case, they should magnetically attract and lock. If you hear a characteristic click or feel a slight resistance when extracting, then the contact is correctly established. Magnetic fixation plays a key role here.
Sometimes, when you're in a case, your headphones don't charge, most often because of a protective polymer film that you forget to remove from new devices, or because of the oxidation of contacts, wipe the golden contacts on your headphones and inside the case with a cotton swab lightly moistened with alcohol.
- 🧼 Regularly wipe contacts with dry cloth from earwax and dust.
- 🔋 Make sure the case is charged before putting the headphones in there.
- 👂 Insert headphones before the characteristic click of magnets.
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If you do not use headphones for a long time, charge the case at least once every 3 months. Deep discharge of lithium batteries can lead to their irreversible failure and bloating.
Wireless charging: opportunities and limitations
The flagship models of the Redmi line are increasingly equipped with Qi wireless charging modules. This allows you to replenish the power supply of the case by simply putting it on the charging panel (a power bank with a wireless function or a charger for a smartphone).
But it has its own peculiarities: wireless charging speeds are usually lower than wired charging speeds, and it's about 5-10 watts. In addition, the case must be positioned correctly on the base: the center of the case must match the center of the base charging coil, and even a centimeter shift can interrupt the process.
When using the wireless method, the case can heat up more than usual. It's a normal physical reaction, but excessive heating is harmful to the chemistry of the battery. If you feel that the case has become hot, it is better to interrupt the process or remove the protective case if it interferes with heat transfer.
⚠️ Warning: Metal objects such as rings, key fobs or coins caught between the case and wireless charging can heat up to high temperatures and damage the case or cause a burn.Always check the surface before charging.
Diagnosis: why do not charge headphones Redmi
When the indicator is silent and the music is not playing, it can be taken by surprise. If the connection to the network does not work, you need to conduct a phased diagnosis. First of all, check the cable itself and the power supply on another device. Often the problem lies in the damaged wire, which visually looks whole.
The second common cause is contamination of the charging port in the case itself, where pile and dust accumulate in the pocket, which compress and block contact. Carefully, using a wooden toothpick or a plastic shovel (not metal!), try to clean the contents of the connector.
If mechanical cleaning didn't help, there may have been a controller failure or a deep battery drain.In the case of a deep discharge, the device may need to "rock": leave the headphones on charging for 30-60 minutes, even if the indicator doesn't light up immediately. The power controller needs time to raise the voltage to the working level.
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If none of the methods worked and the indicator does not respond to the cable connection within an hour, most likely, the battery inside the case broke down or the train departed, in which case you need to contact the service center.