Xiaomi Redmi Airdots headphones do not charge in the case - what to do?

Xiaomi Redmi Airdots wireless headphones (including Redmi Airdots models) 2/3/Pro) It's a real hit because of the combination of price and quality, but even these popular gadgets have problems, one of the most common: the headphones stopped charging in the case, you put them in place, the indicator flashes or doesn't respond at all, and after an hour or so, the charge never happened. What is the reason and how to return to work?

In this article, we’ll look at all possible causes, from common contact contamination to serious hardware malfunctions, how to diagnose a problem, what manipulations you can do yourself, and when it’s time to bring a device to the service, and we’ve collected unique data on typical breakdowns of specific Airdots models (for example, why Airdots 3 Pro often “glut” after updating the firmware).

Important: if the headphones are dead and the case doesn't see them, don't throw them away -- 80 percent of the time, the problem is solved without replacing the components, and let's start with the simplest checks and gradually move on to the more complex methods.

1. Checking for obvious causes: power, cable, connector

Before you take your headphones apart or carry them for repair, make sure that the problem is not the trivial things.

• 🔌 The case is not charged by itself, the indicator on the case may not burn if the case battery is completely discharged.
• 🔄 Faulty cable or adapter – try charging the case with another cable (preferably original from Xiaomi) and from another power source (for example, from a laptop instead of an outlet).
• 🔍 A contaminated Type-C connector -- dust, pile, or contact oxidation can block charging. Look at the flashlight connector, if you can see debris inside, clean it carefully with a wooden toothpick.
• 🔋 Problems with the socket or USB-port – connect the case to another port or use a knowingly working outlet.

If after these manipulations, the indicator on the case caught fire, but the headphones are still not charged - move to the next step. If the case does not respond to charging at all, the problem may be in its battery or power controller (more about this in the section on hardware malfunctions).

⚠️ Warning: Never use metal objects (needles, paper clips) to clean the connector, which can close the contacts and permanently disable the case. Also avoid alcohol-containing liquids, which can damage plastic parts.

2. Cleaning the contacts of headphones and case: step-by-step instructions

The most common reason for not charging is oxidation or contamination of contacts on headphones and inside the case, and over time, dust, sweat, fat from the skin accumulates on metal pads, which disrupts electrical contact. How do you properly clean them?

You'll need:

• 🧻 Cotton swabs (better with a plastic base, not a wooden one).
• 💧 Isopropyl alcohol (70-90%) or ordinary vodka.
• 🔦 Lantern (to inspect contacts).
• 🧲 Magnet (optional, for extraction of metal shavings).

Procedure:

1. Remove the headphones from the case and examine the gold contacts on their case. They should be clean, without green coating (oxidation) or black spots.
2. Soak the cotton swab in alcohol and gently wipe the contacts on the headphones. Don't press hard -- light enough moves.
3. Turn the case over and find the spring contacts (usually 3-4 pieces) inside, wipe them with the same stick, and if the contacts are deep, use a toothpick wrapped in cotton.
4. Let the parts dry for 5-10 minutes. Don't turn on the headphones right after cleaning!
5. Put the headphones in the case and check if the charging indicator lights up.

Take pictures of the location of contacts before cleaning|Use only isopropyl alcohol (not acetone!)|Wipe the contacts along, not across|Allow the parts to dry for at least 5 minutes|Check charging after cleaning-->

If after cleaning the headphones started charging, but the process is very slow, perhaps the contacts do not fit tightly enough, in this case, a light bending of the spring contacts in the case (neatly, with tweezers or a thin screwdriver) will help.

⚠️ Warning: Do not use acetone, gasoline or other aggressive solvents to clean, they destroy plastic and rubber headphone seals. Also avoid wet wipes: impregnation can leave a sticky coating.

3. Resetting headphones to factory settings

If the cleaning didn't work, the next thing you should try is a full reset, which removes all the conjugated devices and returns the headphones to their original settings, and often restores normal charging after reset.

Instructions for Redmi Airdots (all models):

1. Put both headphones in the case and close the lid.
2. Press and hold the button on the case (usually on the side or back) for 10-15 seconds.
3. The indicator on the case should flash red and white (or orange and white, depending on the model), and then go out. This is a signal of a successful reset.
4. Take out your headphones and try to connect them back to your phone.

For Redmi Airdots 3 Pro models, the procedure is slightly different:

1. Remove the headphones from the case.


2. Press the touch panels on both headphones simultaneously for 10 seconds.




3. Wait for the double beep and the flashing of indicators.

After reset, the headphones can discharge faster than usual — this is normal, as they reboot the firmware. Let them fully charge in the case (at least 1 hour).

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If the reset did not work the first time, repeat the procedure, having previously completely discharged the headphones (leave them on before turning off).

4. Checking the case battery and headphones

If the headphones are still not charged, the problem may lie in the wear of the batteries. Redmi Airdots (especially the first generation) has a typical "disease": after 1.5-2 years of operation, the battery capacity of the case drops by 30-50%, and it ceases to give enough current to charge.

How to diagnose a battery problem?

For accurate diagnosis, you can use a multimeter:

• 🔋 Measure the voltage on the case contacts when connecting to charging. Norm: 4.8-5.2 V. If the voltage is below 4.5 V, the problem is in the power supply or cable.
• 🎧 Check the voltage on the headphone contacts in the case. It should be 3.7-4.2 V (lithium-ion battery voltage). If 0 V - the headphone battery is completely discharged or defective.

If you do not have a multimeter, pay attention to the indirect signs:

• The case charges for longer than 2 hours, but the indicator does not go out → faulty charging controller.
• Headphones show 100% charge, but last less than 30 minutes → wear-out.
• The case discharges overnight without use → leakage current or faulty battery.

5. Software failures: firmware update and flashing

Few people know, but Redmi Airdots (especially models) 3/3 Pro) have a firmware that can sometimes crash, and if the headphones stop charging after upgrading or connecting to a new device, the problem may be software.

Typical signs of software failure:

• 🔄 Headphones connect to the phone, but the case does not see them (the indicator does not light up when stacking).
• 🎵 The sound is interrupted, although the charge is 100%.
• 🔋 One earphone charges, the second does not, although the contacts are clean.

How do you update the firmware?

Xiaomi does not officially provide tools for manually updating Redmi Airdots, but there are unofficial methods:

1. Download the Airdots Flasher utility (available on forums) 4PDA or XDA-Developers).
2. Connect the case to the PC via USB (The headphones should be inside).
3. Start the utility and select the model of your headphones.
4. Click Check Firmware and then Update (if a new version is available).

Important: Flashing can reset your settings and even make your headphones go down if you interrupt the process. Do this only if you're confident in your actions!

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If the headphones stopped charging after connecting to your iOS device, try forgetting them in your Bluetooth settings and re-cooking them, sometimes due to a conflict of communication protocols.

6. Hardware malfunctions: when repairs are needed

If all previous methods have failed, it is likely a hardware problem, and here are the most common Redmi Airdots malfunctions and their signs:

Self-repairing Redmi Airdots is possible, but requires soldering skills and small parts, such as replacing the battery in the headphone includes:

1. Careful opening of the body (usually it is glued, so you need a mediator or a thin screwdriver).
2. Suppression of the old battery and soldering of the new (it is important not to overheat the fee!).
3. Multimeter contact check.
4. Assembly and testing.

Where can I buy parts?

• 🛒 AliExpress: Airdot batteries cost 200-500 ₽, But delivery can take up to a month.
• 🏬 Local service centers – often sell parts “with hands” after repairs.
• 🔧 Specialty stores (like FixPrice or Chip and Deep) – you can find spring contacts and controllers there.

⚠️ Note: When replacing the battery yourself, use only batteries with similar parameters! For Redmi Airdots, these are usually lithium-ion batteries with a capacity of 40-60 mAh with a voltage of 3.7 V. A larger battery may not fit into the case or damage the charging controller.

7. Alternative charging methods (if the case breaks)

If the case is permanently out of order, but the headphones are still working, you can charge them with workarounds, which is a temporary solution, but it will help you not to lose music while you are looking for a replacement case.

Method 1: Direct charging from Power Bank with Type-C

You'll need:

• 🔌 Cable USB-C — USB-C (adapter).
• 🔋 Power Bank with Exit 5V/1And.
• 🧲 Two neodymium magnets (can be removed from an old hard drive).

Instructions:

1. Attach magnets to the headphone contacts (they simulate the closure of the case and activate charging).
2. Connect the headphone directly to Power Bank via cable, and charge it if the controller is not damaged.

Method 2: Using a phone charger

Some users adapt charging docks from smartphones (e.g., from Xiaomi Mi Band) by connecting headphone contacts via wires, but this requires electronics knowledge and is fraught with short circuits!

Method 3: Buying a universal case

AliExpress sells universal cases for TWS-These are headphones with adjustable contacts, and they're suitable for Redmi Airdots, if you adjust the position of the headphones. ₽.

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If you temporarily charge headphones without a case, watch the temperature! Without a charging controller, the battery can overheat and swell.

FAQ: Frequent questions about charging Redmi Airdots