Owners of fitness trackers often face the need to quickly and safely recharge the device so as not to interrupt activity monitoring. - Xiaomi Mi Band 4C (Also known as Mi Band 4 Active, it is a popular model that differs from the older versions by having a built-in model. USB-This technical solution makes the process much easier, since you don't have to look for a lost removable tracker or a special cable dock.
However, despite the simplicity of the design, there are nuances that affect the rate of replenishment and battery life. Incorrect connection or use of poor-quality power sources can lead to the fact that the device will charge for hours or completely stop responding to current. In this material, we will discuss all aspects of working with the battery of your gadget.
You will learn how to properly remove the capsule, what indicators signal the status of the process and what to do if the tracker is dead and does not turn on. Understanding these processes will help you avoid typical errors and keep the gadget working for many years.
Features of the design and extraction of the tracker
The main feature of the Mi Band 4C is an integrated USB-Unlike the more expensive Mi Band series, there is no separate Bluetooth module to be removed from the strap, instead, the entire center of the device is removed from the silicone bracelet. This is done to reduce the cost of construction, but requires accuracy in operation.
To remove the capsule, you need to hold the strap firmly with one hand and press the inside of the tracker with the other hand, where the screen is located. The movement must be sure, but not sharp, so as not to damage the plastic latches. If the capsule sits very tight, you can slightly warm the strap material with warm hands or hair dryer at a minimum temperature, which will make the silicone more elastic.
⚠️ Warning: Never use sharp objects (knives, scissors) to slash the capsule, as you risk damaging the sealed case or scratching the touch screen, which will deprive you of warranty.
Once removed, you'll see two golden contacts on the end of the device, and that's where the charger transfers energy to the battery, and it's important to keep this area clean, because sweat and dust can oxidize the contacts, impairing the connection.
The silicone strap also requires maintenance.Run it regularly with warm water and soap to remove contaminants that can irritate the skin when worn.A clean strap is easier to remove and put on, reducing the risk of mechanical damage to the tracker itself during maintenance.
Process of connection to the power source
Connect to Xiaomi Mi Band 4C It's very simple to charge, because you don't need adapters, and you just have to put the protruding part of the tracker in the standard. USB-The device is compatible with most ports. USB 2.0 and 3.0, which are found in computers, laptops, televisions and car radios.
However, the charging speed is directly dependent on the current output from the source. Computer ports typically give out up to 0.5 Amps, which will lead to a longer process of filling the battery. Using an adapter from a Quick Charge smartphone is theoretically possible, but the tracker's power controller will limit the current to a safe level.
When connecting, make sure the contacts are correctly positioned. There is a small indentation on the underside of the capsule that should match the tongue inside. USB-The sleeve (if you are using an adapter, what is the 4C You don't need to) or just log in to the PC port. If you're using a third-party adapter for other models, make sure it's designed specifically for the built-in series. USB.
Once the physical connection is in place, the device must vibrate to confirm the beginning of the process. If there is no vibration, try flipping the plug or changing the angle of insertion slightly. Sometimes the dust in the computer port interferes with the tight contact, so it is recommended to blow the connectors periodically.
Status indication and charging time
Understanding the signals that Mi Band sends 4C, It allows you to monitor the state of the battery without having to look at the screen of the smartphone every time. OLED-display that lights up when connected or pressed on the touch button.
The average charge time from zero to 100% is 1 to 1.5 hours, which is a pretty fast rate for 130 mAh. If you notice that the process takes much longer, check the cable (if you use a transition) or clear the contacts.
☑️ Checking the charging status
Below is a table deciphering the main states of the indicator during charging:
| Screen indication | Meaning | Action. |
|---|---|---|
| Red battery badge burns | Low charge, charging process underway | Leave it connected. |
| Interest figures (1-99%) | Charge level tracking | We can use it. |
| Green battery icon on fire | Charging complete (100%) | Shut off the network. |
| The screen is not responding. | Deep discharge or malfunction | Leave on charging for 10-15 minutes |
It is worth noting that OLED-The screen doesn't burn all the time while charging to save energy, and to check the current percentage, just tap the touch area or tap it if the model suggests it, and in most cases, the screen activates automatically when charging starts and goes out after a few seconds.
Troubleshooting: Tracker not charging
The situation when Xiaomi Mi Band 4C stops responding to the connection to the charger, is rare, but can be caused by trivial reasons, most often the problem lies in the oxidation of contacts or a software failure, which causes the power controller to “fall asleep”.
The first step should always be to clean the contacts. Wipe the golden pads on the end of the device with a soft dry cloth or cotton swab slightly soaked in alcohol. Make sure that the contacts are free of visible dirt, pile or corrosion that may have been caused by sweat.
⚠️ Warning: If the device gets into salt water, be sure to rinse it with fresh water before charging, as the salt causes instant corrosion of contacts when the current is applied.
If cleaning didn't work, try the charge push method. Leave the device connected to a powerful power source (smartphone adapter) for 15-20 minutes, even if the screen doesn't light up. Sometimes the controller takes time to raise the battery voltage to the minimum power threshold.