Owners of popular fitness trackers often face the need to recharge the device, but do not always understand the intricacies of this process. Wearable electronics require careful handling, especially when it comes to contacts and power supply. Xiaomi Mi Band 4 is equipped with a lithium-polymer battery, which has its own characteristics of operation and storage of charge.
Incorrect charging can cause the battery to wear out quickly or even fail. In this article, we will look at all the steps of connecting the tracker to the network, consider possible errors and answer frequent questions. It is important to understand that voltage stability plays a key role in the longevity of your device.
Before starting the procedure, make sure you have an original or certified cable on hand. Using cheap analogues can cause the power controller to overheat or run unsteady.
Compilation and preparation for charging
The standard box with Xiaomi Mi Band 4 includes a special dock cable, which is necessary to connect to the power source. This accessory has a unique shape that repeats the curves of the tracker, which provides reliable contact. Without this cable, you can not charge the device with standard methods.
You will need to start working. USB-port of a computer, laptop or power adapter from a smartphone. the current should not exceed 1 Amperes, as more powerful units can damage the charge controller. USB 2.0 or 3.0 on PCs, as they give a stable voltage of 5 volts.
Notice the status of the contacts on the tracker itself and on the cable. Oxidation or contamination can interfere with energy transfer. Wipe them with dry soft cloth before connecting. The golden contacts on the Mi Band 4 capsule are located on the inside and must be clean for successful charging.
- 🔌 Make sure that the Xiaomi Mi Band 4 charging cable has no visible insulation damage.
- 💡 Check the power source: it is best to use a computer port or a quality unit on the computer. 5V/1And.
- 🧼 Clean the back of the tracker of sweat and dust before installation in the dock.
- 📱 If you use Power Bank, make sure it supports the low current mode.
Don't try to charge the device from car lighters without a special controller, because power surges in the on-board network of the car can be fatal to electronics.
Step-by-step connection instruction
The process of installing the tracker in the charger requires care.The cable has a specific shape with two convex contacts that should coincide with the indentations on the capsule.The fitness bracelet should fit tightly to the docking station, but without undue effort.
Insert the tracker into the cable connector so that the convex contacts of the cable enter the corresponding slots on the back of the device. You should feel a slight click or stop. USB-cable connector to selected power source.
Once the connection is established, the tracker screen will light up and you will see the battery animation. If the screen does not respond, try to slightly move the capsule in the connector or wipe the contacts. Proper positioning is critical to start the process.
☑️ Charging checklist
When charging, the device may get hot, but it should not cause discomfort when touching. If the heat is strong, immediately disconnect the device from the mains. Normal temperature indicates that the chemical reaction inside the lithium polymer cell is working normally.
⚠️ Warning: Never leave the device to charge in direct sunlight or near heaters.
Indication and charging time
Understanding the signals that the Xiaomi Mi Band 4 is giving helps control the process. AMOLED-The display clearly shows the status of the battery, and it usually takes 1 to 1.5 hours to fully charge depending on the residual charge.
If you see a flashing battery icon, it may indicate poor contact or critically low charge, requiring "swinging." In normal mode, the indicator shows a percentage of filling or animation. The battery life of a fully charged device is up to 20 days in base mode.
| Status of indicator | Meaning | Action. |
|---|---|---|
| Blinks red | Critical discharge or contact error | Wipe contacts, check connection |
| Red is burning. | Charging process is underway (less than 100%) | Wait for completion |
| Green is burning. | Charging complete (100%) | Shut off the network. |
| It's not burning. | No power or malfunction | Check the current source and cable |
It is worth noting that using the function of constant monitoring of pulse and notifications significantly reduces the time of operation, in such conditions, autonomy can be reduced to 7-10 days, which requires more frequent recharging.
Why does the bracelet warm up when charging?
Typical problems and their solution
Sometimes users are faced with a situation where the tracker stops charging. The most common reason is the oxidation of contacts due to sweat and moisture. Regular cleaning with a soft cloth or cotton swab, slightly moistened with alcohol, helps to solve the problem.
Another common problem is the wear of the cable. The thin wires inside the braid can break, especially near the braid. USB-If you bending the cable, you get a charge, you lose it, you're damaged, you need to replace it.
Sometimes resetting the bracelet settings through the Mi Fit app (now Zepp Life) helps to eliminate software errors of the power controller. Reconnecting the device in the application often solves small glitches.
- 🧽 Carefully wipe the contacts on the bracelet and cable with an alcohol napkin.
- 🔄 Try using another one. USB-port or other charging cable.
- 📲 Restart the bracelet through the settings menu or app on your phone.
- 🔋 Let the device lie on the charger 15-20 minutes if it has been discharged to zero.
⚠️ Warning: If the bracelet is not charged after cleaning the contacts and changing the cable, the battery may have failed.
Operational rules for extension of service life
For Xiaomi Mi Band 4 to last you, it is important to follow the rules of operation of lithium batteries. It is not recommended to discharge the device until completely shut down (0%) too often. It is optimal to put it on charge when there is 15-20% of power left.
Keeping a fully discharged device for long periods of time is detrimental to battery chemistry. If you plan to keep the tracker off for a long time, charge it to about 60 percent and turn it off. Periodically, every few months, check the charge and recharge it.
Avoid extreme temperatures. Cold and heat have a negative impact on battery capacity and internal resistance. The operating temperature should be between 0 and 35 degrees Celsius.
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If you don't plan to use the bracelet for a few months, keep it with a charge of about 50-60% and off, which minimizes battery degradation.
The use of original accessories is another key factor: Cheap copies of cables often don't have proper overload protection, which can lead to power surges and damage to the tracker board.
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Keeping the temperature in place and avoiding a full discharge are the main factors keeping your Mi Band 4 battery healthy over the years.