Users of the Xiaomi ecosystem often face a situation when you need to find a replacement for a lost case or clarify the model of an accessory to buy a case. The question of exactly what this component is called is not accidental, since different terms are used in technical documentation and colloquial speech. Understanding the right nomenclature is critical to finding compatible accessories on marketplaces.
The official specifications and user manuals refer to this element as a charger case or case, but depending on the series of devices — whether Redmi Buds or flagship Mi True Wireless Earbuds — design features and names can vary, not only in appearance, but also in the type of charging connectors used.
This article is designed to systematize knowledge about components for TWS-We'll take the official names, the technical details of different generations of devices, and help you identify your model accurately, so you can avoid errors when ordering parts or protective silicone linings.
Official terminology and names of components
When searching for accessories, it is important to use the right keywords. In the global documentation, Xiaomi uses the term Charging Case, which literally translates as “charge case”. In the Russian versions of the instructions, you can find the designation “charge case” or simply “case”, these names are synonymous and refer to the same device.
Not to be confused with the main base charger, which can be sold separately for some premium models. The standard box that comes with the package is an integral part of the headset containing the built-in battery, which ensures the mobility and autonomy of the headphones throughout the day.
⚠️ Note: When searching for parts on Chinese sites, use the English name Charging Box or Charging Case in combination with the headphone model to find the original or compatible component, not just a protective case.
Differences in (naming) are often regionally determined, with the European market more likely to use the concise Case, while the Asian market may have more complex composite names that include the device generation number, and understanding this logic helps to find the right products in catalogs faster.
Design features of charging cases
The physical structure of the case includes several important elements that provide functionality: inside are the contact pads (pins) or magnetic holders that fix the headphones and transfer energy to their batteries, the design is designed to provide tight fit and protection from dust.
At the bottom of the case is usually a port to charge the case itself. In modern models, this is the standard USB Type-C connector, whereas in older versions, such as the first AirDots, Micro-USB was used. Some top models support wireless charging according to the Qi standard, which eliminates the need for wires.
The case cover is equipped with a magnetic lock that keeps it closed. The opening mechanism can be mechanical (fold) or slider, as in some models of Mi True Wireless Earbuds Basic 2. The quality of the hinge directly affects the life of the accessory.
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Pay attention to the color of the indicator inside the case: flashing white usually means pairing mode, and constant red signals a low battery charge of the case.
Comparative table of models and their cases
Different headphone lines come with uniquely specifications, and here is a comparison of popular models so you can identify yours by appearance and functionality.
| Model headphones | Case connector type | Wireless charging | Design features |
|---|---|---|---|
| Redmi Buds 3 Pro | USB Type-C | There is. | Vertical opening, matte coating |
| Mi True Wireless 2S | USB Type-C | No. | Glossy plastic, horizontal shape |
| Redmi AirDots 2 | Micro-USB | No. | Minimalist design, hidden indicator |
| Mi True Earbuds Basic | Micro-USB | No. | Large size, protruding headphones |
As you can see from the table, evolution has been toward unifying connectors and adding wireless charging functions. Older models with Micro-USB are gradually leaving the market, giving way to more modern counterparts. When buying a replacement case, be sure to check the type of connector.
Also worth noting are the differences in size: Active noise cancellation (ANC) models are usually larger because of the larger battery and complex electronics, an important parameter if you plan to carry the device in your jeans pocket.
Marking model identification
If you lose a package, you can tell the exact name of the case by the labeling on the device itself, usually in small print on the inside of the lid or on the bottom of the face, and look for model code that often starts with letter marks, like TW30 or BHR4.
You can use the Xiaomi Earbuds or Mi Wear app to decrypt the codes, and when you connect your headphones to your smartphone, the system automatically identifies the model and displays its name in the interface, and it's the most reliable way to know which one you have. TWS-accessory.
Bluetooth Menu → Connected Device → Device Information → Model NumberIn some cases, the labeling can get erased from time and sweat, and then you should pay attention to the shape of the LED indicator, and it's different in different series, from the front, from the inside between the headphone compartments, or from the end of the case.
What to do if the labeling is completely erased?
Compatibility and replacement issues
A common question users ask is: can you charge one model of headphones in a case from another? In most cases, the answer is no. Contact groups and seat shapes are unique to each series. Even if the headphone physically enters the hole, charging may not go or, worse, damage the battery.
The exception is headphones within the same line with minimal design changes. For example, the cases from Redmi AirDots and Redmi AirDots 2 are almost identical in appearance, but may have different magnet locations.
⚠️ Warning: Never try to charge your headphones in a case with damaged contacts or a swollen battery, which can short-circuit and cause the headphones to fail.
If you have a replacement case, it often needs to be paired again, which usually requires placing both headphones in a case, pinching the touch areas for a few seconds before the indicator flashes, and then finding the device in the Bluetooth list.
☑️ Case compatibility check
Care and maintenance of the charging case
To prolong the life of the case, it is recommended to regularly wipe the contact areas with dry soft cloth, which can accumulate earwax and dust, which worsens the quality of connection and charging. Dirty contacts are a common reason that headphones do not charge to 100%.
Keep moisture out of the compartments. While many current models have IPX4 moisture protection, the case itself is often not sealed. Water that gets in can oxidize the charge control board.
Store the device at room temperature, extreme cold or heat adversely affect the lithium polymer battery built into the case. If you do not use headphones for a long time, leave the case charged by about 50-60%.
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Regular cleaning of contacts with a cotton swab, slightly moistened in alcohol, prevents 90% of problems with charging and unstable work of headphones.
Where to find original parts and accessories
Official Xiaomi service centers rarely sell separate chargers, offering replacement of the device as a whole, however, there are authorized partners and specialized spare parts stores where you can purchase original components.
When ordering from international sites, pay attention to seller ratings and reviews. The market is saturated with copies that can look like the original, but have worse plastic quality and unstable electronics. The original case always has a high-quality assembly without gaps.
To protect against scratches and chips, it is recommended to purchase a silicone case immediately, which is available for most popular models and is inexpensive, which will preserve the product appearance and increase its resistance to falls.