How to charge Xiaomi headphones without a case: working methods and risks

Charging case for TWS-Xiaomi headphones are not just a storage case, but a full-fledged power station, without which the manufacturer does not provide recharging. However, situations where the case is lost, broke or discharged at the most inopportune moment are familiar to many. Can you do without it? Yes, but with reservations: Not all methods are safe, and some require soldering skills or specific adapters.

In this article, we will discuss 5 working ways to charge Xiaomi headphones (including Redmi AirDots, Mi True Wireless 2, Buds 4 and others) without the original case – from simple improvised solutions to technically complex modifications. We will pay special attention to the risks of battery damage, since improper voltage or polarity can cause headphones to fail forever.

Why the manufacturer did not provide charging without a case

Construction TWS-Xiaomi assumes that charging is carried out exclusively through contacts in the case:

• 🔋 Miniature battery: The capacity of headphones rarely exceeds 40-60 mAh, and standard USB-The connectors (even Type-C) will not physically fit in the case.
• 🛡️ Overheating protection: Case controls current and voltage, preventing overcharging. Direct connection to the power source can cause the battery to swell or ignite.
• 💧 Waterproof: Open charging contacts would increase the risk of corrosion when moisture is ingested (even in models with a high-performance battery). IP54).

However, in emergencies, you can get around these limitations, and the key is to understand that any alternative method takes away your warranty (if it still works) and increases the risk of your headphones failing.

⚠️ Note: If your Xiaomi headphones are still warranty, do not use methods with soldering or disassembly of the case. Contact the service center - sometimes the case is replaced under warranty even in case of mechanical damage.

Method 1: Using a universal charging case for TWS

The safest and easiest method is to purchase a universal charging case with adjustable contacts, such devices are sold on AliExpress, in electronics stores or on Wildberries (search for “universal case for TWS” or “headphone charger box”).

Principle of work:

1. In the case there are mobile metal "tissues", which adapt to the location of contacts on headphones.
2. Connect the case to the power source (USB, power bank).
3. Put headphones on the contacts, fix them with magnets or clips.

Advantages of the method:

• ✅ No risk of damage to headphones (if the case is of high quality).
• ✅ Suitable for most Xiaomi, Redmi, Haylou and other brands.
• ✅ Can be reused for other devices.

Disadvantages:

• ❌ Cost - from 500 to 2000 rubles (depending on quality).
• ❌ Cheap cases may not match the polarity of contacts – check reviews before buying!

Method 2: Direct connection to source 5V via wires

This method requires minimal soldering iron skills or at least multimeter skills, and the idea is to connect headphone contacts directly to a power source (such as USB 5V) while maintaining polarity.

What you need:

• 🔌 power supply: USB-port, power bank or power supply with exit 5V/0.5A.
• 🔧 Thin wires (for example, from old charging).
• 🔥 soldering iron or conductive glue (for fixing contacts).
• 📊 Multimeter (to check polarity).

Step-by-step:

Determine the polarity of contacts on headphones (usually "+" and "-" are signed or you can find a diagram for your model).

Cut it off. USB-cable and clear the wires (red — «+», black — «–»).

Salt or glue the wires to the headphone contacts, avoiding short circuit.

Connect to the power source for 10-15 minutes (no longer!).

Disconnect the wires and check the charge (earphones should turn on).-->

⚠️ Critical moments:

• 🔥 Don't over-exert. 5V — This will cause the battery to overheat.
• ⏱️ Charging time is no more than 15-20 minutes. It is dangerous to keep on direct power for longer!
• 🔌 Isolation: After soldering, seal the contacts with tape to avoid closure.

Method 3: Charging through an adapter with spring contacts

An alternative to soldering is the use of spring contacts (for example, from old mobile phone charging or purchased pogo-pin adapters), which is less risky, since it does not require the deconstructing of headphones.

Instructions:

1. Buy or get two spring contacts from old equipment (you can solder out of non-working charging).
2. Put them on the wires from USB-cable, observing polarity.
3. Lock the contacts on the headphones with a scotch or plastic clip.
4. Connect to the 5V/0.5A power supply for 10-15 minutes.

Pros of the method:

• ✅ There is no need to sell or disassemble headphones.
• ✅ Can be used repeatedly.

Cons:

• ❌ Unreliable contact – headphones can move, interrupting charging.
• ❌ It requires a precise polarity match.

💡

If the spring contacts are weak, use a small magnet (such as from an old hard drive) to fix them on the metal parts of the headphones.

Method 4: Using a charger from other headphones

If you have a case from others TWS-Headphones (e.g. Haylou, Realme or Huawei), you can try to charge Xiaomi through it.

How to check compatibility:

1. Look at the contacts in the case and on the headphones – they should coincide in number and location.
2. Put your headphones in someone else's case and press a little bit, and if the charger lights up, it works.
3. If there is no reaction, try turning the headphones (sometimes the contacts are mirrored).

Case models that are often suitable:

• 🎧 Case by Haylou GT1/GT2 — Compatible with Redmi AirDots.
• 🎧 Realme Buds Q case could be good for Mi True Wireless 2.
• 🎧 Huawei FreeBuds Case – Sometimes Works with Xiaomi Buds 3.

⚠️ Note: Even if the case is physically fit, the charging voltage may vary. for example, Huawei sometimes uses the same. 4.2V opportunistic 5V. Long-term use of someone else's case can reduce battery life.

Method 5: Wireless charging (only for supported models)

Some Xiaomi models (such as Mi Air 2 Pro or Buds 3 Pro) support wireless charging according to the Qi standard. If your headphones are included in this list, you can use:

• 📱 Charging platform for smartphones (Qi) 5W–10W).
• 🔋 Power Bank with wireless charging.
• 🚗 Car wireless charging (if it supports low-power devices).

How to charge:

1. Place the headphones on the charging pad with the contacts down (usually the side with the button).
2. Wait for the charging indicator (blinking or constant light) to appear.
3. After 15-20 minutes, check the charge level.

Limitations:

• ❌ It only works with models that support Qi (check the specifications).
• ❌ Slower than wired charging (it may take up to 1 hour to fully charge).
• ❌ Not all sites recognize headphones due to the small size of the coil.

💡

Wireless charging is the safest alternative method, but only works for a limited number of Xiaomi models. Before buying a charging pad, check if your model supports Qi.

What to do categorically can not be done

Attempts to charge Xiaomi headphones without a case sometimes lead to irreversible damage.

• 🔥 Connect to the voltage source above 5V (for example, to the power supply on 9V or 12V). This is guaranteed to disable the battery.
• 💦 Charge your headphones wet, even if the model has protection. IP54, contact may oxidize.
• ⚡ Use homemade "charges" from batteries 9V («Too high voltage for lithium polymer batteries.
• 🔌 Connect the headphones to the socket 220V It's a deadly danger!

Also avoid:

• 🔄 Frequent charging without a case - this reduces the battery life by 2-3 times.
• 🛠️ Disassembling headphones without experience - a great risk of damaging the microphone or speaker.

FAQ: Frequent questions about charging without a case