How to find out the charge of the Xiaomi case: a complete guide for all models

The charge of the Xiaomi case is an important parameter that affects the usability of wireless headphones, smart watches and other accessories. Many users face a situation where the headphones are discharged, but it is not clear whether there is enough power in the case to recharge them. Unlike smartphones, where the battery level is always in sight, with Xiaomi cases, it is not so obvious.

In this article, we will discuss all possible ways to test the charge of the case for different Xiaomi devices, from Redmi AirDots headphones to Mi Watch smartwatches. Fit/Xiaomi Wear, and hidden features that are not mentioned in the official instructions, plus tips for extending the life of the battery of the case and answers to frequent questions.

1. Standard methods of checking the charge of the case

Most Xiaomi cases are equipped with light indicators that signal the level of charge, but not all users know how to interpret these signals correctly.

For headphones Redmi AirDots, Xiaomi Air 2/3 similar algorithms for testing such:

• 🔋 Case indicator: when connected to charging, the LED flashes red (charges) or lights green (fully charged). Some models (for example, AirDots 3 Pro) have 4 white indicators showing the charge level in 25% steps.
• 📱 Notification on the smartphone: when opening the case next to the connected device Xiaomi/Redmi a pop-up window appears with a percentage of the charge of headphones and case (does not work on all firmware).
• 🔊 Voice assistant: in models with support for voice prompts (for example, Xiaomi Buds 4) when connecting to the phone, the charge level is voiced.

It's important to consider that the accuracy of the indicators may vary, for example, Redmi AirDots S LED lights green at 80% charge, and AirDots 3 only at 100%, if the indicator flashes red when connected to charging, it can mean both low charge and malfunction of the power controller.

2. Checking the charge through the Mi application Fit/Xiaomi Wear

The official Mi Fit and Xiaomi Wear apps (for smartwatches and fitness bracelets) provide detailed information about the case’s charge level, but not everyone knows where to look.

For headphones Xiaomi the order of action is as follows:

1. Open the Mi Fit app (or Xiaomi Wear for watches).
2. Go to the Devices tab and select your headphones.
3. On the main screen of the device, find the Battery Status section - there will be the percentage of charge of the case and each headphone separately.

For a Mi Watch or Redmi Watch smartwatch, the algorithm is similar, but the case charge data (if any) can be displayed in the Accessories or Charger section. S1 Wireless charging case shows your battery level only when connected to the network.

Update Mi. Fit/Xiaomi Wear to the latest version

Make sure the headphones/watch are connected to the app

Turn on Bluetooth on your smartphone

Check permissions for the application (access to notifications and location)-->

Important nuance: if the case is not displayed in the application, try:

• 🔄 Reconnect the headphones/watch to the phone.
• 📱 Restart the application or clear its cache (Settings) → Annexes → Mi Fit → Memory. → Clear the cache).
• 🔋 Connect the case to charge for 10-15 seconds – sometimes it resets synchronization errors.

3. Hidden Verification Methods (for Advanced Users)

If the standard methods don't work or you want more accurate data, you can use hidden features or third-party tools, which are suitable for models where the manufacturer did not provide a user-friendly interface.

One way is to use ADB-Android Debug Bridge, which reads data from a Bluetooth device, works if the case supports Battery Provider:

adb shell dumpsys battery


adb shell dumpsys bluetooth_manager

In the conclusion, look for lines with level or charge_counter — They can contain data on the charge of the case, but this method requires an unlocked bootloader and developer rights on the smartphone.

Another option is third-party applications like Battery Monitor or Bluetooth Battery Monitor, which scan connected devices and display the charge level if the case is transmitting this data.

• 📲 Install the app from Google Play.
• 🔍 Start scanning of Bluetooth devices.
• 📊 Find your case in the list - next to it will be the percentage of charge (if supported).

Warning: use ADB or third-party applications may result in:

⚠️ Warning: Some battery monitoring applications request access to special features or administrative rights.This can create a vulnerability to viruses.Install only proven high-rated programs.

4. Compatibility table: how to check the charge for different models

To avoid guessing whether your case model supports a particular way of checking, we have compiled a table with current data. Please note that the functionality may vary depending on the firmware version.

Important: In case-display models (such as the Xiaomi Buds 4 Pro), the charge level is displayed directly on the screen when the lid is opened. This is the most accurate and convenient way, but such cases are more expensive.

Frequent problems and their solutions

Sometimes Xiaomi's case is not behaving correctly: it doesn't show charge, it discharges quickly or it doesn't charge at all, and let's look at typical situations and ways to fix them.

Problem 1: Case is not charging

• 🔌 Check the cable and power supply - use the original USB-C cable (for newer models) or micro USB (for older models).
• 🧹 Clean the contacts of the case from dust with a cotton swab soaked in alcohol.
• 🔄 Reset the case: press the button for 10-15 seconds (before the indicator flashes).

Problem 2: The app doesn't show the charge of the case

• 📱 Update the firmware of the headphones through Mi Fit (Device Profile) → Update of the PO).
• 🔄 Turn off and reconnect the headphones to the phone.
• 📵 Reboot your smartphone – sometimes helps with Bluetooth crashes.

Problem 3: Case discharges quickly

• 🔋 Avoid overheating – do not leave the case in the sun or near heat sources.
• 🔄 Every 2-3 months, complete a full discharge-charging cycle (discharge the case to 0%, then charge to 100%).
• ⚡ Use only original Quick Charge-enabled chargers (for fast-charging models).

💡

If the case discharges in 1-2 days without use, check it for a parasitic discharge. To do this, fully charge the case, turn off Bluetooth on the headphones and leave for 24 hours. If the charge has dropped by more than 10%, the battery or power controller is likely to malfunction.

6. How to extend the life of a case battery

The average battery life of a Xiaomi case is 2-3 years when used actively, but with proper care, this period can be extended to 4-5 years.

Optimal charging conditions:

• 🔋 Charge the case at a temperature of 10–30°C – Extreme temperatures reduce battery life.
• ⚡ Do not keep the case on charging for more than 24 hours - this leads to a recharge.
• 📉 Try not to discharge the case below 10% – deep discharge is harmful to lithium polymer batteries.

Case storage:

• 🏠 If you don’t use the case for a long time, store it with a charge of 40-60% in a cool dry place.
• 🚫 Avoid storage in sealed bags – this can lead to condensation of moisture.

Program settings:

• 📱 Turn off automatic headphone connection in Bluetooth settings if you don’t use them constantly.
• 🔄 Regularly update the firmware of the headphones / watches – the manufacturer often optimizes energy consumption.

💡

The most common reason for a quick case discharge is the background Bluetooth connection, and even if the headphones are in the case, they can stay connected to the phone and use up a charge. Always turn them off manually if you're not using them.

7. Alternative methods of checking (if nothing works)

If none of these methods worked, there are some non-standard approaches that are less accurate, but can give approximate information about the level of charge.

Method 1: Case weighing

Lithium polymer batteries lose mass as they discharge.

1. Fully charge the case and weigh it on the kitchen scales (accuracy up to 0.1 g).
2. Discharge the case to 0% and weigh again.
3. Compare weight - the difference of 1-2 grams corresponds to ~20 to 30% charge.

This method only works for new cases, as over time the battery degrades and loses capacity.

Method 2: Testing of working hours

If the case charges the headphones, you can roughly estimate its charge by the time of operation:

• 🎧 Completely discharge the headphones (before disconnecting).
• 🔋 Place them in the case for 15 minutes, then check the charge level of the headphones.
• 📊 If the headphones are 20 to 30 percent charged, the case is about 50 percent charged. If it's less than 10 percent, the case charge is critically low.

Method 3: Use of a multimeter

For users with technical skills:

1. Take the case apart (carefully so as not to damage the fee!).
2. Connect the multimeter to the battery contacts in voltage measurement mode.
3. Compare readings with rated voltage (for example, for a battery) 3.7V): 4.2V — 100% charge, 3.7V — ~50%, 3.2V — discharged.

⚠️ Warning: Disassembly of the case will void the warranty and may damage the battery.

FAQ: Answers to Frequent Questions