Modern wearables have become an integral part of everyday life, tracking our activity and notifications. However, even the most advanced fitness tracker requires regular energy replenishment for stable operation. Owners of the popular model often face questions about the right connection to the network, especially if they first purchased a device from Xiaomi.
Incorrect connection can cause the screen to not light up and the indicator to not signal the beginning of the process. It is important to understand the specifics of the design of the bracelet, where the contact group is hidden in the case and requires accurate matching with the charger.
In this article, we will take a detailed look at all the steps of connecting to the power supply, look at the specifications of the battery and solve typical problems, you will learn why the indicator flashes and how long it takes a full recovery cycle of the lithium polymer cell.
Charger design and interfaces
Xiaomi Mi Band 4 comes with a special cable that is not standard USB-The main tracker module is removed from the strap and inserted into a plastic dock holder, and on the inside of the capsule are two golden contacts that should fit tightly to the response pins on the cable.
On the other side of the cable is a standard USB Type-A connector designed to connect to a power adapter or a computer, which is usually about 15-20 centimeters long, which is enough for a comfortable position on the table, and it is important not to bend the wire at the exit point of the plastic base, as this can damage the inner veins.
- 🔌 USB-connector: standard plug for connecting to the 5V power supply.
- 🔋 Docking station: plastic bed with contact pins for fixing the tracker.
- ⚡ Indicator: LED on the front panel, signaling the status of charge.
Can I charge without being removed from the strap?
It is worth noting that using third-party chargers is possible, but it requires caution. Cheap analogues may not provide stable current or have offset contacts, which will lead to heating or no reaction of the device. The original accessory is designed with the exact geometric dimensions of the capsule.
Step-by-step instructions for connecting to the network
The process of installing the tracker to charge requires a certain sequence of actions, first you need to remove the main module from the silicone strap, and for this purpose, there is a special locking protrusion on the inside of the strap, which you press on, pushing the capsule outwards.
☑️ The algorithm for correct charging
Once removed, inspect the contact area. If there are traces of sweat or contamination, wipe them with dry soft cloth. Insert the module into the charging dock until the characteristic click or tight fixation. Contacts should be directed to the cable pins.
⚠️ Attention: Do not put too much effort into inserting the module. If the tracker does not enter easily, check the correct orientation.
Connect. USB-Power connector: It is recommended to use an adapter with a current of 0.5 A or 1 A. The use of powerful fast charge units from smartphones (Fast Charge) is undesirable, since the power controller of the tracker may not respond correctly to voltage surges.
Once the connection is established, the battery animation should appear on the screen. If the screen does not catch fire, try to slightly move the module in the dock or wipe the contacts with an alcohol wipe. Sometimes oxidation prevents the current from passing.
Status indication and charging time
Understanding light signals helps to monitor battery health, and there's a small LED on the front panel that changes color depending on the situation, and the orange glow indicates that there's an active energy storage process going on.
When the battery is fully recharged, the light will turn green, at which point the device can be disconnected from the grid. No long charge is required after reaching 100%, modern electronics turn off the current.
| Color of indicator | Status of the device | User action |
|---|---|---|
| Orange (blinks) | Charging's coming. | Waiting. |
| Green (burning) | Charge 100% | Shut off the network. |
| Red (flashing) | Critical discharge | Leave it on charge. |
| Absent. | No contact or breakdown. | Check the connection. |
The average charge cycle takes 1 to 2 hours, depending on the degree of discharge and the ambient temperature, and in the cold, the chemical reactions in the battery slow down, so the process can take longer in winter.
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The optimal time to fully charge the Mi Band 4 is about 1.5 hours, after which the device should be turned off to extend the battery life.
Typical problems and methods of their solution
Sometimes users are faced with a situation where the tracker refuses to respond to the connection, most often the reason lies in the oxidation of contacts due to moisture or sweat. Regular cleaning with a soft brush or cotton swab dipped in alcohol helps to avoid this.
Another common problem is the loose fit of the module in the dock, and over time, the plastic elements can deform a little, so you can gently put a thin piece of paper under the module for a better press, but you need to be very careful.
- 🧹 Cleaning: wipe the contacts with alcohol or eraser.
- 🔌 Replacement of cable: Try another USB-port.
- 🔄 Reboot: Put the tracker on charging with the screen discharged.
⚠️ Warning: If the device gets too hot during charging, immediately turn it off.Operation of the overheated gadget can cause the battery to bloat or the electronics to fail.
In rare cases, the problem can be software-based. If the screen is on but the charge is not going, try resetting the tracker through the Mi Fit app (now Mi Fitness).
Rules of operation and conservation of battery life
In order for a lithium polymer battery to last a long time, it is important to follow certain rules of operation. It is not recommended to bring the device to full discharge when it turns off itself. It is better to put the gadget on charging with a balance of 15-20%.
Temperature is also key: Do not leave the tracker to charge in direct sunlight or in the cold.The optimal temperature for chemical processes inside the battery is in the range of +10 to +30 degrees Celsius.
If you plan to stay off the device for a long time, charge it to about 60 percent and turn it off. Periodically, every few months, check the charge level and recharge the tracker to avoid deep discharge, which is detrimental to battery chemistry.
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To clean contacts, use a regular school eraser - it perfectly removes oxidation and does not damage gold spray, unlike metal objects.