Owning a Xiaomi Mi Band 4 fitness tracker is a great way to monitor your health, but even the smartest gadget requires energy. Many users face a situation where the screen goes out and the vibration stops responding, which signals the need for an urgent connection to the power source. Understanding the right algorithm at this point is critical for the safety of the device and its long-lasting operation.
The charge recovery process in the fourth Band series has its own design features that distinguish it from its predecessors. Unlike earlier versions, it uses an integrated battery rather than a removable battery, which requires careful handling of the charging port. Correct connection ensures not only fast charging, but also prevents the contacts from oxidizing in the future.
In this article, we will take a look at all the steps of the procedure, from removing the tracker from the strap to deciphering flashing indicators. You will learn why the device can warm up, how to avoid common errors and what to do if the bracelet has stopped responding to the connection.
Preparing for the charging process: what you need to know
Before you start to recover power, you need to make sure you have all the necessary components on hand.Combined with the tracker comes a special cable, which is the only possible way to transfer power.Using third-party adapters or trying to charge the device through wireless stations designed for smartphones will not work and can damage the electronics.
Special attention should be paid to the state of the charger itself, the contacts on the cable should be clean, without traces of oxidation or dust. USB-port of the computer, make sure it is serviceable and gives sufficient current. - Xiaomi Band 4 sufficiently sensitive to the quality of the voltage supplied, so the use of the original power supply or a proven port USB 2.0/3.0 a prerequisite.
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Use it for charging. USB-PC port or adapter with current no more than 1A – powerful fast charging units from smartphones can damage the power controller tracker.
It is also important to check the condition of the tracker before connecting: if the device shows traces of moisture, sweat or cosmetics, they must be carefully removed. The entry of liquid into the connectors during the current supply can cause a short circuit that will irreversibly spoil the gadget. Dry contacts are the key to a safe procedure.
How to remove the capsule from the strap
A key feature of the Mi Band 4 design is that the charging port is directly on the tracker body, not on the strap, which means that to connect to the network, you have to remove the capsule, and do this correctly so that you do not damage the silicone strap and break the mounts of the tracker itself.
The extraction process is quite simple, but requires a certain skill. Turn the bracelet with the inside side to you. You will see that the capsule is inserted into the bed of the strap with little tension. Carefully press your thumb on the convex part of the tracker on the back, pushing it out of the silicone groove.
☑️ Proper removal of the capsule
Some users prefer to use assistive tools, but experts strongly recommend against metal objects or knives.A sharp edge can easily damage a sealing pad or scratch the body, depriving the device of protection from moisture.The best way is to use the force of the fingers, perhaps using a small amount of talc to slide if the strap is tight.
Instructions: connection of the charger
Once the capsule is free, you can go directly to the connection. USB-These are two metal contacts that are supposed to match the feedback contacts on the bottom of the tracker.
Put the tracker in the recess on the cable. Notice that the contacts on the cable and on the tracker are shaped in a specific way. They should match perfectly. If you feel resistance or the tracker doesn't fall flat, don't put too much effort -- you may be inserting it with the wrong side or with a bias.
- 🔌 Take a charging cable and plug it in. USB-port of the computer or power adapter.
- ⌚ Place the tracker capsule over the cable contact areas.
- 🔋 Carefully press the tracker, making sure that the contacts are tightly in contact.
- 💡 Check if the screen or indicator is on fire.
When the contact is correct, the tracker should vibrate, and the screen will show a picture of the battery with the current percentage of charge. If the screen does not catch fire, try to slightly move the tracker into the groove or wipe the contacts with an alcohol wipe. Bad contact is the most common reason why the device does not charge.
Status indication and charging time
Understanding the signals your Xiaomi Band 4 is sending will help you monitor the process and respond to problems in time. The on-screen indicators give you clear information about what is happening to the battery at the moment.
It usually takes about 1.5-2 hours to fully charge a fully discharged device, but the time can vary depending on the wear of the battery and the ambient temperature. It is not recommended to leave the device on charge longer than necessary after reaching 100%, although modern controllers are able to cut the current.
| On-screen indicator | Meaning | Action. |
|---|---|---|
| Flicking battery | Critically low charge | Urgently connect to the network |
| Interest figures | Process is normal. | Wait for completion |
| 100 percent screen. | Charging complete. | Disconnect from the cable |
| flashing lightning icon | Connection error | Check the contacts |
Why is the tracker warming up?
If you see a flashing zipper or battery icon, it's a signal that the circuit isn't closed properly, in which case you need to remove the tracker, wipe the contacts, and try to reconnect. A stable connection is the key to successful charging.
Charging problems and their solution
Even with all the instructions, there can be situations where the Mi Band 4 refuses to charge, which often causes panic among users, but in most cases the problem is solved at home without going to the service center.
One of the most common causes is oxidation of the contacts. Sweat, water and dust create a thin film on the surface of the metal that prevents current from passing. To fix this problem, you can use a cotton swab dipped in alcohol or a special contact cleaner. After cleaning, make sure that the device is dry.
⚠️ Warning: Never immerse the tracker in water or alcohol entirely to clean the contacts during charging or immediately after charging.
Another reason could be a software failure: sometimes the tracker system freezes in deep sleep and doesn't react to the charging connection. In this case, rebooting helps: find two small dots on the back of the capsule (in the recess near the contacts) - these are the reset contacts. Closing them with a metal object (for example, a paper clip) for a few seconds can reboot the device.
Contact care and prevention
To avoid the question of "how to charge the bracelet" unexpectedly often due to breakdowns, it is necessary to regularly care for the device.
After each workout or contact with water (shower, pool, sea), it is recommended to wipe the tracker with a dry soft cloth.Salt water and chlorine are especially aggressive to metal contacts.If you have been swimming in the pool, be sure to rinse the device with fresh water before drying to wash away the chemicals.
- 🧼 Regularly wipe the back of the tracker and charging cable with a dry cloth.
- 💧 Avoid soap and shampoo in the contact area.
- 🔋 Do not store the device in a completely discharged state for a long time.
It's also important to monitor the condition of the strap itself, and if the grooves are stretched and the capsule is hanging, it may not fit well with the charger, so you might want to consider replacing the strap with a new, original or quality one.
⚠️ Note: If you notice that the contacts on the tracker itself have begun to turn black or become covered with green plaque, do not try to clean it with a knife or aggressive chemistry.