How to charge wireless headphones Xiaomi without a case: all working ways

Xiaomi wireless headphones are some of the most popular on the market due to the combination of price, sound quality and battery life. But what if the charging case is lost, broke or discharged at the wrong time? Charging headphones without a case is possible, although it requires caution. In this article, we will analyze all working methods, their pros and cons, and give tips on how to avoid battery damage.

It is important to understand: the manufacturer does not provide for the normal charging of headphones Xiaomi AirDots, Redmi Buds or Mi True Wireless without a case. Power connections are hidden inside the case, and direct current can lead to overheating, short circuit or even fire danger. However, in emergency situations, you can use alternative methods - the main thing is to observe safety.

We tested all of the methods described below on Xiaomi AirDots Pro 2, Redmi Buds 3 Pro and Mi True Wireless Earphones 2 Basic models, and the results are summarized in a compatibility table in one section, and if your model is not specified, focus on the type of connector and the location of the contacts (usually they are standard for the entire line).

Why Xiaomi did not provide charging without a case?

Xiaomi’s wireless headphone design assumes that charging is done exclusively through the case, for several reasons:

• 🔋 Battery protection. The case controls voltage and current, preventing overcharging or overheating. Direct connection to the power source can knock the battery out.
• 🔌 Miniature contacts. Headphone jacks are not designed to be connected/disconnected frequently, they can oxidize or get damaged.
• 📦 Unification of design. The case is not only a charger, but also a storage case, and a synchronizer for a pair of headphones.
• 💰 Marketing: The manufacturer is interested in selling original accessories (cases, cables), so does not advertise alternative ways.

However, in some situations, charging without a case becomes necessary, for example, if the case is lost and the headphones are discharged on the road, or the contacts in the case have become oxidized and do not transmit charge, in such cases, you can use bypass methods - but with reservations.

⚠️ Note: All of the methods described below are abnormal and can cancel the warranty on the device. The risk of damage to the headphones or battery lies entirely with the user. If the headphones are warranty, contact the Xiaomi service center.

Method 1: Use of a universal charger for TWS-headphone

The safest alternative method is to purchase a universal charging case for the TWS-These devices are sold on AliExpress, Ozon or Wildberries for 300 to 1500 rubles. They are equipped with a voltage regulator and are suitable for most models, including Xiaomi.

Advantages of the method:

• ✅ The case controls current and voltage like the original.
• ✅ Universal. Suitable for headphones of different brands (if the type of contacts is the same).
• ✅ Additional protection. The case acts as a storage case.

How to choose a universal case:

1. Check the type of contacts on your headphones (usually two metal dots on the inside).
2. Compare with the case photos in the description – the contacts should match in location and size.
3. Pay attention to the battery capacity of the case (optimally 300-500 mAh).
4. Read the reviews – some cases may not be suitable for Xiaomi models with a non-standard location of contacts.

Take a picture of your headphone contacts|Compare it to 3-5 case models|Check the reviews for compatibility with Xiaomi|Make sure the case supports fast charging (if necessary)

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Example of compatible cases:

Universal from Baseus|The original Xiaomi|Budget from Hoco|Another option-->

Method 2: Charging through a homemade adapter (for power users)

If you can't buy a universal case, you can make a temporary adapter from improvised tools, which requires accuracy and basic knowledge in electrical engineering, and is only suitable for models with open contacts (for example, Xiaomi AirDots Pro 2 or Redmi Buds 3 Pro).

You'll need:

• 🔌 USB-Type-C or Micro-USB cable (depending on headphones).
• 🔧 Two thin wires (can be taken from an old headset).
• 🧲 Fixing insulation or heat-glue.
• 🔍 Loop or magnifying glass (contacts are very small).

Step-by-step:

1. Identify the polarity of the contacts on the headphones «+» — the last contact, the "-" - the central, but it is better to specify the scheme for your model.
2. Then, put the wires on and put them in the sleeve. USB-cable: Red wire — +5V (usually in-house USB). Black wire — GND (contact).

Don't let it get out of the way!

more 0.5A

15-20 minutes

⚠️ Note: This method may lead to: 🔥 Overheating of the battery (if the current is too high). ⚡ Short circuit (if the wires are in contact). 🔋 Loss of battery capacity (with frequent use) Do not leave your headphones unattended while charging!

💡

If you don't have a soldering iron, you can use a conductive glue (e.g., Eleconduct) to fix the wires on the contacts, which dries in 10 to 15 minutes and provides a reliable connection.

Method 3: Wireless charging (for supported models)

Some Xiaomi models support Qi wireless charging, such as Xiaomi AirDots Pro. 2s Redmi Buds 4 Pro can be charged on any Qi panel, but with reservations:

• 🔄 Low efficiency: Due to the small size of the headphones, the charging speed will be 2-3 times lower than using a case.
• 📍 Precise positioning. The earpiece needs to be placed in the center of the charging pad, or it won't start charging.
• ⏱️ Long-term. Full charge can take up to 3-4 hours.

How to charge wirelessly:

1. Check if your model supports Qi (the information is available in the specifications on the Xiaomi website).
2. Place the headphone on the charging pad with contacts down.
3. Wait for the charging indication (on some models, the red LED lights up).
4. Do not move the earpiece during the process – this will interrupt the charging.

Compatible models:

💡

Wireless charging is the safest alternative method, but only works on a limited number of models. Check the specifications of your headphones before trying.

Method 4: Using a charger from other headphones

If you have a case from others TWS-headphones (for example, Haylou, Realme or Huawei), you can try charging Xiaomi through it:

• 🔌 The location and size of the metal dots must be identical.
• 🔋 The right voltage. Most cases give out. 5V, But some budget models can give jumps.
• 📏 The size of the headphones, there should be enough space in the case to close the lid.

How to check compatibility:

1. Compare contacts on headphones and in the case with a magnifying glass.
2. Try to insert the headphone into the case without closing the lid.
3. If the charging indicator caught fire - you can close the lid and charge.

Case models that are often suitable:

• 🎧 Case by Haylou GT1/GT2 — Compatible with Xiaomi AirDots and Redmi Buds.
• 🎧 Realme Buds Q Case is a good fit for Mi True Wireless Earphones 2.
• 🎧 Case by Huawei FreeBuds 3i — It is universal, but requires precise positioning.

⚠️ Note: Do not use headphone cases with a battery capacity above 1000 mAh - they can give too high current. Also avoid cases with fast charging (Fast Charge), as they do not adjust the voltage for other devices.

Method 5: Emergency charging from another device (risky method)

In extreme cases, you can try charging headphones from another gadget with low output current.

• 📱 Smartphone with OTG-cable (if it supports reverse charging).
• 🎮 gamepad or joystick with USB-port.
• 💻 Laptop or PC (port USB 2.0, current to 0.5A).

Step-by-step instruction (for OTG-smartphone-loading):

1. Turn on the smartphone mode “Reverse charging” (on Xiaomi it is Settings). → Battery → Reverse charging).
2. Connect. OTG-smartphone adapter.
3. Observing polarity, connect the wires to the headphone contacts (as in Method 2).
4. Connect the wires to OTG-adapter (red) → +5V, black → GND).
5. Charge no longer than 10 minutes, controlling the temperature of the headphones.

Limitations of the method:

• ⚡ Very slow charging (can take a few hours on 10% of the battery).
• 🔥 The risk of overheating a smartphone if it does not support reverse charging.
• 📵 Does not work on iPhone (requires a special Lightning-OTG adapter with power).

💡

If you have a power bank with an exit USB-A current 1A, You can connect your headphones via a homemade adapter (see Method 2), but not longer than 15 minutes. Use only certified power banks (for example, Xiaomi Mi Power Bank 3).

What to do if the headphones are not charged?

If none of the methods worked, check the following points:

• 🔍 Contact status. Oxidation or contamination can block charging. Clean them with a cotton swab with alcohol.
• 🔋 Headphone battery if the battery is completely discharged (below) 2.5V), The normal charge may not start. Try to push it with a short-term connection to the current source (no longer than 5 seconds!).
• 🔌 Cable and power supply. Use only original or certified accessories. Cheap cables may not transmit enough current.
• 📱 Software failure. Sometimes it helps to reset your headphones: press both touchpads for 10-15 seconds before the indicator flashes.

If the headphones are still not charged:

1. Try charging them through another case (borrow from a friend).
2. Check the voltage on the contacts with a multimeter (should be) ~3.7V charge).
3. Contact Xiaomi Service Center – you may need to replace your battery.

FAQ: Frequent questions about charging Xiaomi without a case