Introduction: Why it is important to know the charging time of headphones
Xiaomi Mi True Wireless Earbuds Basic 2 wireless headphones have become a popular choice thanks to the combination of affordable price and good sound. However, many users are faced with the question: how long does it take to fully charge both the headphones themselves and their charging case?
Unlike wired analogues, TWS-True Wireless Stereo headphones require regular recharging through a case that needs power itself. Mishandling the charging process can lead to accelerated battery degradation, a problem faced by owners of many budget models. In this article, we will take a detailed look at all aspects of charging Mi True Wireless Earbuds Basic 2, including official data, real-world tests and optimization tips.
Official data: charging time from Xiaomi
According to the manufacturer’s specifications, Xiaomi Mi True Wireless Earbuds Basic 2 has the following charging characteristics:
- 🔋 Time of full charge of headphones in the case: about 1.5 hours (with a discharged battery).
- 🔌 Time of charging the case itself through the cable: approximately 2 The first one (using the original adapter) 5V/1A).
- 🔄 Number of full headphone charges from the case: up to 3 times (at 100% case charge).
Importantly, these numbers are obtained in ideal laboratory conditions: a temperature of 20–25°C, the original cable and power adapter, and a new battery.
Factors affecting charging speed
In practice, the charging time of the Mi True Wireless Earbuds Basic 2 depends on several key parameters.
- Cable and adapter type: Using non-original low-current accessories (e.g. 5V/0.5A) can increase the case charge time to 3-4 hours. Xiaomi's original adapter provides stable 5V/1A.
- Ambient temperature: At temperatures below 10°C or above 35°C, the chemical processes in the lithium-ion battery slow down, increasing the charging time by 20–30%.
- Discharge level: If the headphones are not fully discharged (for example, by 50%), the charging time is reduced proportionally to 40-50 minutes.
- Battery status: After 200 to 300 charging cycles, the battery capacity decreases, and the full charge time can increase.
⚠️ Note: Use of fast chargers (e.g. Quick Charge 3.0 or PD) It will not speed up the process, as the Mi True Wireless Earbuds Basic 2 case does not support accelerated charging protocols.
| Factor. | Effect on charging time | Recommendation |
|---|---|---|
| Unoriginal cable | +30-50% of the time | Use Certified Accessories |
| Low temperature (<10°C) | +25–35% | Charge at room temperature |
| Worn-out battery | +15-20% after 300 cycles | Monitor the number of cycles |
| Charging from USB-port | +10–15% | Use a socket with an adapter |
How to check the level of charge of headphones and case
Xiaomi Mi True Wireless Earbuds Basic 2 doesn’t have a display to display percent charge, but there are several ways to control:
- 📱 Through the Mi Home app: Connect your headphones to your smartphone via Bluetooth. Open the Mi Home app → Select the device → Battery section, showing the percentage of charge of each earphone and case.
Connect your headphones to Mi Home|Check the indicator on the case|Listen to signals when placed in a case|Charge below 20%-->
If the Mi Home app doesn’t display battery data, upgrade to the latest version or reconnect the headphones in Bluetooth settings (Forget device → repair).
Optimal conditions for charging: how to extend the life of the battery
The lithium-ion batteries installed in Mi True Wireless Earbuds Basic 2 are sensitive to operating conditions, and following these guidelines, you can keep your battery capacity at 80% or higher after 500 cycles:
- Avoid full discharge. The optimal charge range is 20-80%. Regular discharge to 0% reduces the life of 30%.
- Charge at room temperature. Extreme temperatures (below 0°C or above 40°C) accelerate degradation.
- Use the original cable. Cheap cables can deliver unstable voltages, which harms the power controller.
- Store with a charge of 40-60%. If the headphones are not used for a long time (for example, during vacation), leave them with a partial charge.
⚠️ Warning: Don't leave your headphones on charge for more than 24 hours straight.Integrated protection shuts off power after 100%, but prolonged network connection can overheat the controller.
💡
If the headphones have been unused for a long time (more than a month), perform 2-3 full charge/discharge cycles to calibrate the battery and restore an accurate display of charge level.
Frequent charging problems and their solutions
Xiaomi Mi True Wireless Earbuds Basic 2 users sometimes experience charging problems. Consider typical scenarios and ways to fix them:
| Problem. | Possible cause | Decision |
|---|---|---|
| Case is not charging from the cable. | Contamination of USB-C connector or faulty cable | Clean the connector with alcohol, check the cable on another device |
| Headphones don't charge in the case | Oxidation of contacts or firmware failure | Wipe contacts with a smoother, reset settings through Mi Home |
| Fast discharge after charging | Battery wear or background connection to the device | Disable Bluetooth on your smartphone, check capacity in Mi Home |
| The indicator does not burn when charging | Failure of the LED or controller | Connect to the PC and check through Device Manager |
If none of the methods worked, it may require replacement of the battery or repair of the power controller. in the service centers of Xiaomi the cost of replacing the battery of the case is 800-1,200 rubles, headphones – 600-900 rubles per piece (for 2026).
What if the headphones stopped charging after falling?
Comparison with competitors: who is charging faster?
For an objective assessment, consider the charging time of the Mi True Wireless Earbuds Basic 2 against the background of similar models of the budget segment (data for 2026):
- 🔹 Redmi Buds 4 Lite: 1.2 hours (earphones), 1.8 hours (case).
- 🔹 Realme Buds Q2: 1.5 hours (earphones), 2.2 hours (case).
- 🔹 Huawei FreeBuds 4i: 1 hour (earphones), 2 hours (case).
- 🔹 Samsung Galaxy Buds FE: 1.3 hours (earphones), 2.5 hours (case).
As you can see, the Mi True Wireless Earbuds Basic 2 is in the mid-range in terms of charging speeds, and its main advantage is its low price, with comparable performance, but models that support fast charging (such as the Redmi Buds 4 Pro with Type-C PD) can charge 1.5-2 times faster, but also cost more.
💡
Xiaomi Mi True Wireless Earbuds Basic 2 does not support wireless charging or fast protocols (Quick Charge, PD). Using powerful adapters will not give speed gain, but can damage the device.