Xiaomi Redmi Airdots wireless headphones have become one of the most popular accessories due to the combination of price, sound quality and autonomy. However, many users have a question: how long does it take to fully charge these headphones? The answer depends on the model (1st, 2nd or 3rd generation), battery status and even the charger used.
In this article, we will not only look at the standard charging time for each version of the Redmi Airdots, but also the factors that affect it: you will learn how to properly charge the case and the headphones themselves, what errors reduce battery life, and what to do if charging is too slow. And also – we will reveal a few life hacks that will help extend the autonomy of your headphones on the Internet. 20-30%.
If you're just planning a purchase or have a charging problem, you'll find all the answers here, and let's start with the most important thing: how long does it take to fully charge Redmi Airdots across generations?
Standard charging time for each model
Full charging time Xiaomi Redmi Airdots varies depending on the generation of the device. the manufacturer indicates indicative figures, but the real figures may differ from the previous model. 10-15% due to battery wear or charger features.
Here are the official figures for each model:
| Model | Case charging time | Time to charge headphones in the case | Case battery capacity | Headphone capacity |
|---|---|---|---|---|
| Redmi Airdots (1st generation) | ~2 hours | ~1.5 hours (up to 100 hours%) | 300 mAh | 40 mAh (each) |
| Redmi Airdots 2 (Airdots S) | ~1.5 hours | ~1 hour | 300 mAh | 43 mAh (each) |
| Redmi Airdots 3 (Pro) | ~1 hour | ~40-50 minute | 400 mAh | 55 mAh (each) |
| Redmi Buds 3 (Lite) | ~1.2 hours | ~50 minutes. | 310 mAh | 35 mAh (each) |
It's important to understand that these numbers are relevant for new devices and original chargers. If you've been using a case for a year or more, charging times can increase by a factor of a year. 20-30% It's because of the natural wear and tear of lithium polymer batteries, and the speed depends on the power of the adapter:
- 🔌 5W (standard USB) — time-table.
- ⚡ 10W and above (Quick Charge) - the case is charged on 15-20% faster, but the headphones inside the case - unchanged.
- 🔋 Wireless charging (for supported models) – increases the time 30-40%.
Redmi Airdots 3 Pro supports fast charging only when using the original Type-C cable. When connected via Micro-USB (even with an adapter). 18W) Charging time increases to 1.5 hours.
How to properly charge the case and headphones: step-by-step instructions
Many users make charging errors, which leads to shorter battery life or slow charging. Follow this instruction to avoid problems:
- Connect the case to the power supply. Use the original cable (for Airdots 3 Pro - necessarily Type-C). 5W-18W, But it is better to avoid "nonaim"-charging.
- Close the case cover. The headphones will charge automatically if they are properly mounted in the nest. The indicator on the case should flash red (charging) or burn green (full charge).
- Wait for the case to be fully charged. Don't interrupt the process, even if the headphones are already charged, which reduces the battery life of the case.
- Disconnect the case from the power. Long periods of charging (over 24 hours) are harmful to lithium polymer batteries.
To check the level of charge:
- 🔴 Red indicator (flashes) - the charge of the case <30%, headphone <50%.
- 🟡 Yellow indicator - case charge 30-80%, headphone 50-90%.
- 🟢 Green indicator, full charge.
The case is clean (no dust in the connector)|The original cable is used.|The headphones are properly installed in the nests|Power adapter is in good condition (5W higher)|The indicator flashes red when connected-->
Most users make a mistake: they put their headphones in a random case without clicking. If the contacts don't touch tightly, charging can go into the box. 2-3 Always make sure that the headphones are stuck in the nests until the end.
⚠️ Warning: Never use more powerful adapters to charge Redmi Airdots 18W (This can cause the case power controller to overheat and reduce battery life.
Why are Redmi Airdots charging too slowly?
If your headphones or case are charging longer than the time indicated in the table, the reasons may be as follows:
1. Battery wear and tear
Lithium polymer batteries lose capacity after 300-500 If you use headphones for more than a year, charging times can increase by a few hours. 30-50%. You can check wear using applications like AccuBattery (for Android), but it is difficult to get accurate data - specialized equipment is required.
2. non-original cable or adapter
"Left-hand cables often have smaller wire cross-sections, which limits charging current. For example, a cheap Micro-USB cable can only pass through the wires. 0.5A necessary 1A. This increases the time of the case charge in 1.5-2 once.
Contact contamination
Dust, sweat, or cosmetics can settle on the metal contacts of the case and headphones, impairing conductivity. Clean the contacts with a cotton swab soaked in alcohol (at least 70%). Do not use needles or abrasives!
4. Programmatic failures
Sometimes the power controller of the case freezes and misallocates the current. To reset it, follow the following steps:
1. completely discharge the case (wait until the indicator goes out).
2.Plug in to charge and hold for 30 seconds.
3. Disconnect, then reconnect - the case should start charging in normal mode.5. Low temperature
If you charge Redmi Airdots at a lower temperature +10°C, the chemical processes in the battery slow down, and the charging time increases by 40-60%. Optimal range: +15°C +30°C.
What to do if the case is not charged at all?
⚠️ Warning: If the case heats up higher +40°C during charging, immediately turn it off.This may indicate a malfunction of the battery or controller, which is fraught with fire.
How to speed up the charging of Redmi Airdots: 5 working ways
If you need to charge your headphones quickly before leaving, use these methods:
- Use the Quick Charge 3.0 adapter (18W). Airdots 3 Pro Case Charges 50% in 20 Minutes (Instead of 40 Minutes with Standard) 5W adapter).
- Charge the headphones separately. If you only need one headphone, put only one in the case, the second will take away the current.
- Turn off the headphones before charging, and hold the touchpad on each earpiece for 5 seconds until the light goes off, and when it's off, it charges 10 percent faster.
- Use the port. USB 3.0 on a PC. It gives more current than it does. USB 2.0 (up to) 0.9A against 0.5A). Connect the case to the blue port on your computer.
- Warm up the case before charging. If the headphones were lying in the cold for a long time, hold the case in your hands for 5 minutes - this will accelerate the chemical reactions in the battery.
Important: These methods speed up charging, but regular use can shorten battery life. Use them only in emergencies.
💡
If you urgently need a charge and the case is discharged: connect the headphones directly to powerbank through the OTG-adapter (only for Airdots) 3 Pro with Type-C. They charge on 20-30% post 10 minutes, but this method is not recommended for frequent use.
How to check the battery level?
Unlike smartphones, Redmi Airdots don't show the exact percentage of charge, but there are several ways to estimate the remaining capacity:
1.By the indicator on the case
As mentioned, the color of the indicator indicates the level of charge:
- 🔴 Blinks red — <30%.
- 🟡 Burning yellow — 30-80%.
- 🟢 Burning green — 80-100%.
For headphones: If the voice assistant says “Battery is low” when connecting to the phone, the charge is less than 20%.
2. via the Mi Home app (only for some models)
Redmi Airdots 3 Pro and Redmi Buds 3 Lite support charging level display in the official Mi Home app (Devices section" → "Headphones:
- Put the headphones on the phone.
- Open Mi Home and find them in the list of devices.
- Click on the icon of headphones - the indicator of the charge of the case and each headphone will appear separately.
3. via Bluetooth settings (Android 10)+)
On smartphones with Android 10 and later:
- Open Settings → Bluetooth.
- Find Redmi Airdots in the list of connected devices.
- Click on the gear next to the name and the charge level (if supported) will be displayed.
On the iPhone, this feature only works with the Redmi Buds 3 Pro (in the battery widget).
4. In terms of working hours.
The approximate charge level can be determined by the autonomy:
- 100% → 4-5 Reproduction hours (depending on the model).
- 50% → 2-2.5 hour.
- 20% → Less than 1 hour (earphones start beeping every 5 minutes).
💡
The exact percentage of charge is only shown by Redmi Airdots 3 Pro and later. For older models, use a combination of the indicator on the case and the operating time.
How much do Redmi Airdots charge after full charge?
Autonomy is one of the key parameters of wireless headphones. Here's the real-life data from Redmi Airdots' operating time (at volume). 60-70%):
| Model | Working hours (earphones) | Casework time. | Low consumption regime |
|---|---|---|---|
| Redmi Airdots (1st) | 4 hours | 12 hours (3 cycles) | 5 hours (c) AAC-codec) |
| Redmi Airdots 2 (S) | 4.5 hours | 13.5 hours (3 cycles) | 6 hours (from aptX) |
| Redmi Airdots 3 (Pro) | 5-6 hours | 20 hours (4 cycles) | 7 hours (c) LC3-codec) |
| Redmi Buds 3 Lite | 5 hours | 18 hours (3.5 cycles) | 6.5 hours (c) AAC) |
Autonomy is affected by:
- 🎵 Loudness – at the maximum, the working time is reduced by 30-40%.
- 📶 Bluetooth codec - aptX and LC3 more economical than SBC.
- 🌡️ Temperatures - in the cold (-10°C) autonomy falls by 40%.
- 🔄 Active use of microphone (calls) reduces the operating time by 25%.
To extend autonomy:
- 🔇 Turn off the noise maker when listening to music (if not necessary).
- 📴 Use monomode (one earphone) if you don't need stereo sound.
- 🔄 Turn off your headphones when not using (hold the sensor for 5 seconds).