Owners of popular fitness trackers often face the need to recharge the device, but the design of the Xiaomi Mi Band 4 has its own unique features. USB-A connector that requires a special adapter to remove the tracker from the strap, and a proper understanding of the charging process will help to extend the battery life and avoid mechanical damage.
Recharge doesn't take long, but it does require careful handling of contacts. If you pick up this gadget for the first time or lose the original instructions, it's important to understand the nuances of the connection. Incorrectly placing the capsule in the charger can lead to oxidation of the contacts or breakage of the plastic ears of the mount.
In this article, we will take a look at all the steps of connecting a device to the network, look at the typical problems and how to solve them. You will learn how to properly remove the tracker, what current to use and what to do if the screen does not light up.
Preparation for charging: extraction of the tracker
The first and most important step is to carefully remove the main module from the silicone strap. The Mi Band 4 design implies that only the capsule itself is charged, not the entire strap, and to do this, you need to push the tracker out of the socket by pressing a special bulge on the back of the strap.
Be careful not to make excessive efforts to damage the silicone or scratch the case. Some users use coins or keys, but it is best to do so with a thumb or a special plastic tool if it is included. After extracting, inspect the bottom of the capsule: there are two golden contacts that should be clean.
The charger is a small cable with USB-And this is where you put the retrieved tracker in the lozenge, and you put it on the side of the lozenge, or you don't make contact.
- 🔋 Carefully press the bulge on the inside of the strap with your thumb.
- 👐 Remove the capsule by holding the strap with the second hand so it doesn't pop out sharply.
- 🧐 Inspect contacts for contamination, dust or oxidation before installation.
- 🚫 Do not use sharp metal objects to squeeze the tracker to avoid scratches.
⚠️ Warning: Never try to charge the tracker without taking it out of the strap.Silicon is a dielectric and blocks the power transfer, and trying to pierce the belt with contacts will cause the charger to break.
Process of connection to the power source
Once the capsule is freed from the strap, it must be properly installed in the charging dock. There are two protrusions on the plastic cable holder, which should coincide with the recesses on the tracker body.
Insert the tracker into the slots before clicking or tight fit. Golden contacts on the cable should be tightly pressed against the feedback contacts on the device body. If the connection is done correctly, the Xiaomi Mi Band 4 screen will light up and it will display the battery icon with the current percentage of charge.
The free end of the cable with USB-It's connected to a power source, and it can be a computer port, a laptop port, or a smartphone adapter. USB 2.0 or 3.0 with a current of no more than 1 Ampere, so as not to overload the power controller.
☑️ The right connection Xiaomi Band 4
There are two main ways to connect a cable to the power grid, each with its own characteristics: Using a computer port is convenient for visually monitoring the process through an application, but can be slower. The smartphone adapter provides a more stable current, but requires a free connector.
- 💻 Connection to USB-The port of a computer or laptop provides a stable voltage.
- 🔌 Use of a network adapter (5V/1(a) speeds up the energy recovery process.
- 🔋 Power Bank is also suitable for charging in field conditions.
- ⚡ It is not recommended to use fast charging with support QC 3.0 without voltage control.
Indication and time of full charge
Understanding the light signals and the information displayed on the screen is critical to monitoring the battery status, and immediately after connecting the Mi Band 4 display, the lightning animation and the digital value of the current charge appear on the display, confirming that the electric current is entering the battery.
The full charge cycle of the device takes an average of 1 to 1.5 hours depending on the degree of discharge. If the battery was planted at zero, the first few minutes the screen may not burn — this is the normal reaction of the protection system, which should “rock” the lithium-ion cell.
When the charge reaches 100%, the animation on the screen changes and the battery icon becomes completely painted over.Some users note that after disconnecting from the network, the device can show 99% or 100% - this is a feature of the calibration of the tracker software.
| Status of indicator | Meaning | User action |
|---|---|---|
| The screen's not on. | Deep discharge or poor contact | Check the density of the fit, wait 5-10 minutes |
| Lightning flashes | Charging is in progress. | Leave the device, do not touch the contacts |
| Full battery | Charge 100% | Disconnect from the network to save the resource |
| Blinks red | Error or critically low charge | Check contacts, try another cable |
Why does the bracelet warm up when charging?
Typical problems and methods of their elimination
Often, users are faced with a situation where the tracker does not respond to the connection, most often the problem lies in the oxidation of the contacts, sweat and moisture that enters the wrist during training, eventually form a plaque on the golden patches, preventing the passage of current.
To solve this problem, take a dry, lilaless fabric or a cotton swab slightly moistened with alcohol. Gently wipe the contacts on the tracker itself and on the charging cable. After the alcohol has dried, try to reconnect the device, in most cases, this restores normal operation.
Another common reason is to flip the capsule into charging. The contacts must match each other. If you're confused top and bottom, the electrical circuit won't close. Turn the tracker 180 degrees and check the screen response.
⚠️ If after cleaning the contacts and flipping the capsule, the screen still does not light up, try connecting the cable to another one. USB-The problem may not be the bracelet, but the power source.
In rare cases, software resets or battery "swings" may be required. Leave the device on charge for 30-40 minutes, even if the screen doesn't light up right away. Sometimes the power controller takes time to get out of deep sleep mode.
- 🧹 Carefully clean the contacts with alcohol or eraser to remove oxides.
- 🔄 Turn the capsule in the charger 180 degrees.
- 🔌 Replace. USB-cable or power adapter for a known serviceable.
- ⏳ Leave the device connected for a long time at a deep discharge.
Rules of operation and conservation of battery life
To the Xiaomi Mi Band 4 battery lasts a long time and keeps the charge declared by the manufacturer for the time, it is important to follow certain rules of operation.
Try to charge the device when the energy balance is about 15-20%. Regular storage of a fully discharged device can lead to an irreversible drop in capacity. It is also not recommended to leave the tracker on charging for days after reaching 100%.
The environment also plays a role: Do not leave your gadget in direct sunlight or in the cold while charging, and the optimal temperature for this procedure is room temperature, in the range of 15 to 25 degrees Celsius.
💡
For maximum longevity, try not to bring the charge to 0% too often, the optimal range for storage and use is from 20% to 80%.
Reducing the brightness of the screen and turning off unnecessary notifications will help increase battery life between charges.Although the battery capacity of the Mi Band 4 is 135 mAh, the correct configuration of functions allows you to use the device for up to 20 days without recharging.