Xiaomi AirDots 2 wireless headphones (also known as Mi True Wireless Earbuds 2) remain among the most popular budget headphones. TWS-And the question that owners often face is, how long does it take to fully charge? The answer depends on a variety of factors, from the current level of charge to the type of charger. Standard charging time, accelerated methods, typical errors and ways to extend battery life.
Many users mistakenly believe that the charging time of the headphones and the case are the same, but in fact they are two different processes: the AirDots 2 itself is charged from the case, and the case is charged from the socket or power bank, and the speed depends on the version of the firmware, battery wear and even the ambient temperature, and if you notice that the headphones are charging longer than before, this is a reason to check their condition.
Next you'll find:
- ⏱️ Accurate charging timings from 0% to 100% (with tables)
- 🔌 Comparison of charging time from different sources (USB-A, Type-C, wireless charging)
- ⚡ Ways to speed up the process without harming the battery
- ❌ Common mistakes that ruin the battery
- 🔋 Tips for extending the life of AirDots 2
1. Xiaomi AirDots Standard Charging Time 2: Official Data and Real Tests
According to Xiaomi specifications, full charging of AirDots 2 headphones in a case takes about 1.5 hours (90 minutes), but this value is true for ideal conditions: the original cable, room temperature (20-25 ° C) and a new device.
It is important to understand that charging takes place in two stages:
- Fast charging (up to 80%) – takes ~50-60 minutes.
- Recharging (from 80% to 100%) – can last for 30-40 minutes due to the protection of the controller from overheating.
The AirDots 2 case (300 mAh) charges separately and takes about 2 hours when using the original 5V/1A adapter. If you connect the case to a source with a higher current (for example, 5V/2A), the time will be reduced to 1.5 hours, but this has a slight effect on the battery life.
Table: charging time depending on power source
The charging speed depends not only on the headphones, but also on the type of charger. Below is a table with real data for Xiaomi AirDots 2 (tests were conducted on devices from 2020-2023 release).
| power supply | Time to charge headphones (in the case) | Case charging time | Notes |
|---|---|---|---|
| Original 5V/1A adapter | 1 hour 30 minutes | 2 hours | Manufacturer's recommended option |
| 5V/2A adapter (e.g. from a smartphone) | 1 hour 20 minutes | 1 hour 45 minutes | 10-15% acceleration, safe for the battery |
| USB-port (5V/0.5A) | 2 hours 10 minutes | 3 hours | Slower due to low current |
| Wireless charging (Qi 5W) | — | 2 hours 30 minutes | Only for the case, the headphones charge inside it. |
| Power bank (5V/2.1A) | 1 hour 25 minutes | 1 hour 50 minutes | The best option for travel |
Important: wireless charging is only available for the Xiaomi AirDots 2 SE modification (with Qi support).The standard version of AirDots 2 charges only over wire.
If your headphones are charged longer than these values, this may indicate:
- 🔋 Battery wear (after 300-500 charging cycles)
- 🔌 Use of a non-original cable or adapter
- 🌡️ Charging at extreme temperatures (below 0)°C or higher than 40°C)
3.How to speed up charging Xiaomi AirDots 2 without harming the battery
If you need to quickly recharge your headphones, use these methods:
☑️ Fast charging of AirDots 2
1.Use an adapter with current power 2A. Xiaomi’s original adapter gives you everything 1A, But the headphones support and 2A without the risk of overheating. Charging from Redmi Note smartphones or POCO.
2. Charge the headphones separately from the case. If you need to urgently recharge the AirDots 2, put them in the case for 15-20 minutes, and then pull out. The case will continue to give off charge, even if it is plugged into the socket.
3. Use airplane mode. If the headphones are connected to the phone while charging, they waste energy maintaining the Bluetooth connection, turn them off in the smartphone settings or activate the aircraft mode.
4. Avoid wireless charging for the case. Even if your model supports Qi, wired charging is always faster. The wireless method is convenient, but increases time by 30-40%.
💡
If the headphones are discharged at the most inopportune moment, keep them in a case for 10 minutes - this will last for 1-1.5 hours of listening to music.
4.Typical charging errors that spoil the battery
Many users inadvertently shorten the life of AirDots 2 by making these mistakes:
⚠️ Warning: Charging headphones at a temperature below 0°C or higher than 45°C can cause permanent damage to the battery. In cold weather, before charging, keep the case in your pocket for 5-10 minutes.
1.Using "fast" charges from other devices: Adapters with a voltage of 9V or 12V (for example, from laptops) can disable the AirDots 2 power controller. The maximum voltage is 5V.
2. Storage of discharged headphones. If you leave AirDots 2 discharged for a few weeks, the battery can lose up to 20% of capacity. The optimal level for storage is 40-60%.
3. Charging to the point. Constantly charging to 100% and discharging to 0% reduces the life of lithium polymer batteries. Try to keep the charge in the range of 20-90%.
4. Use of damaged cables. Poor contact or bare wires can cause power surges. Always check the cable for damage.
What to do if the headphones are not charged?
5. How to Check Real Charging Time of Your AirDots 2
If you think that the headphones are charging too long, do a test:
- Discharge AirDots 2 to 0% (they will shut down with voice alert).
- Connect the case to the charger and record the time.
- Every 15 minutes check the charge level on the indicator on the case: 🔴 Red - 0-30% 🟠 Orange - 30-80% 🟢 Green - 80-100%
Compare the result with the table in Section 2.
If the charging time is more than 30% above the norm, it is a sign of battery wear, in which case only replacing the battery in the service center will help.
💡
The average battery life of Xiaomi AirDots 2 is 300-500 charge cycles, and then the capacity begins to decline markedly.
6. Tips for extending battery life
To make AirDots 2 last longer, follow these guidelines:
- 🔄 Partial charging is better than full charging. Try to recharge your headphones a little bit, without going to 0% or 100%.
- 🌡️ Avoid overheating. Do not leave the case in the sun or near heat sources (e.g. on the dashboard of a car).
- 🔌 Use the original cable. Cheap cables may not meet the standards. USB and damage the controller.
- 📱 Update your firmware. Xiaomi periodically releases power-optimizing updates. Check relevance through the Mi Home app.
- 🧹 Clean the contacts. Dust and dirt on the case and headphone contacts make charging worse.
If you watch headphones, they will last 2-3 years without noticeable loss of capacity. When used intensively (for example, 5+ hours a day), the service life is reduced to 1.5-2 years.
⚠️ Warning: If the AirDots 2 case swells or starts to emit an unpleasant odor when charging, stop using immediately.