Owning a modern wearable gadget involves regular charging, but owners of the Xiaomi Mi Band often face the non-obvious nuances of this process. Unlike smartphones, where everything is standardized to the smallest detail, the Chinese giant has made many revisions of chargers over the years. Incorrect connection can lead not only to a lack of response of indicators, but also to oxidation of contacts or damage to the battery.
Complicating matters, different generations of bracelets use radically different methods of power transfer. While early models required the removal of the tracker from the strap, modern versions have moved to magnetic docking stations. In this article, we will discuss in detail the charging algorithms for all current versions, and also consider methods for resuscitating the device if it stopped responding to the connection to the network.
Special attention should be paid to the state of the contacts themselves, as sweat and moisture are the main enemies of electronics on the wrist. Ignoring the rules of care for the contact group often causes the device to stop charging, even though the battery and charger are fully functional.
Determination of model and type of charger
The first and most critical step is to identify your Mi Band model accurately, as the chargers of different generations are incompatible. Attempting to connect the tracker of the fifth version to the docking station from the fourth can lead to mechanical damage to the body or no contact. Usually the model is indicated on the back of the device or in the Zepp Life application (formerly Mi Fit) in the Profile section.
All Xiaomi bracelet chargers can be divided into three main categories by connection type. Understanding what type your gadget is will help avoid confusion when looking for a lost or broken charger.
- 🔌 Contact docking stations: Used in Mi Band 1, 2 and 3 models, characterized by the presence of a recess, where the tracker (capsule) itself is inserted, removed from the strap.
- 🧲 Magnetic Pogo-pin Charges: Applied in the Mi Band 4, 5, 6, 7, 8 and 9. The tracker remains in the strap, and charging is fixed on the back of the case with magnets.
- ⚡ Wireless Bases: A rare type found in some Mi Band 3 versions NFC Experimental versions, where charging occurs simply when placed on the platform.
It is important to note that even within the same category, there may be differences. For example, charging for the Mi Band 4 will physically fit the Mi Band 5, but because of the shifting contacts, charging will either not go or will be extremely unstable. So always focus on the visual matching of contacts on the back of the tracker and pins on the charger.
Instructions for Mi Band 1, 2 and 3 models
Early fitness trackers will have to deal with the most time-consuming process, requiring partial disassembly of the device, and the main feature of these models is that the entire bracelet is not charged, but only its central module, the tracker, and you need to carefully remove the capsule from the silicone strap.
This should be done carefully so as not to damage the fragile mounts or the body of the module. Some users recommend preheating the strap with a hairdryer or holding it in warm water to make the silicone more elastic. Once the module is removed, it should be inserted into a special socket on the charger.
☑️ The process of charging old models
Notice the orientation of the contacts: they should fit tightly to the metal pins inside the charging base. If the device does not respond, try to move the module slightly or wipe the contacts with an alcohol wipe. In this model, oxidation occurs most often due to sweat entering the gap between the module and the strap.
⚠️ Warning: Never try to charge a module without removing it from the strap, and do not use metal objects to retrieve it so as not to damage the battery.
The display process in these models is simple: when connected correctly, the tracker displays a battery icon or LEDs light up. If the screen does not light up a few seconds after connecting to the power source, check the integrity of the tracker. USB-cable.
Charging Mi Band 4, 5, 6, 7, 8 and 9
Starting with the fourth version, Xiaomi engineers have introduced a revolutionary solution for the lineup — charging without removing the tracker from the strap. This was made possible by using magnetic connectors and Pogo-pin technology. To start the charging process, you do not need to disassemble anything, just find the original cable that comes with the kit.
At the end of the cable is a small oval or rectangular module with two golden contacts, and this module needs to be held to the back of the bracelet, and the magnets will pull the charge and lock it in the correct position, and the main thing is to ensure that the surface is clean, because even a thin film of fat or dirt can be current.
- 🔋 Connection: Connect USB-cable connector to power adapter or computer.
- 🧲 Fixing: Apply the magnetic part to the back of the bracelet before clicking.
- ✅ Check: The screen should appear the image of the battery with lightning.
- ⏱ Time: Full charging usually takes 1 to 2 hours depending on capacity.
It is worth noting that for the Mi Band 8 and later, as well as the Pro versions, the mounting mechanism may differ slightly in the shape of the magnets, but the principle remains the same. If the bracelet does not charge, try to slightly move the charger left or right to find the perfect contact point.
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Use it. USB-0.5A to 1A port (a normal computer port or an old phone unit) powerful fast-charging units from smartphones may not start the process because of too high a starting voltage.
In some cases, especially when using non-original cables, magnets can hold weakly, in such a situation, it is better to put the structure on a flat surface to prevent accidental break of contact during charging.
Features of charging Xiaomi Smart Band 7 Pro and 8 Pro
The Pro models have a larger body and a different configuration of contacts. Although the chargers may look like standard ones, the distance between the pins or their location can be changed. Using the usual charging from the Mi Band 7 for the Pro version will not work.
The connection process is similar to the conventional versions: magnetic fixation on the back, but because of the larger weight and size of the device, magnetic clutch plays an even more important role.
If you use a protective film on the back of the bracelet, it needs to be removed before charging. Even the minimal distance created by the film can cause the current to simply fail and the device to think it is not connected to the network.
| Model | Battery capacity (mAh) | Charging time. | Type of connector |
|---|---|---|---|
| Mi Band 4 | 135 | ~1.5 hours | 2-pin magnetic |
| Mi Band 6 | 125 | ~2 hours | 2-pin magnetic |
| Mi Band 7 Pro | 235 | ~2 hours | 2-pin magnetic (Pro) |
| Mi Band 8 | 190 | ~1 hour | 2-pin magnetic |
Pro version owners also need to use docking stations with additional features, such as an integrated alarm clock or clock stand, which often have the same contacts but require a more accurate installation of the device.
What to do if the bracelet is not charged
When you connect to the network, the screen is black and the indicators are not lit, it is quite common. The first and most common cause is contamination of the contacts. During the socks on the back and on the charging pins, sweat, skin fat and dust accumulate, forming a non-conductive film.
To solve the problem, take a cotton swab dipped in alcohol or a special electronics cleaner, and thoroughly wipe the contacts on the bracelet and charger. After cleaning, allow the surface to dry completely before trying to connect again.
The method of "reviving" a deeply discharged bracelet
The second reason could be a software failure, where the device is "hanging" and can't see the connection, in which case, put the bracelet on charge, and then press and hold the touch button (if the model allows) or the control button on the charger itself (if any). Sometimes it helps to connect to another. USB-port or use of another cable.
⚠️ Warning: Do not use needles or sharp metal objects to clean the contacts, as this can damage the protective coating and cause corrosion.
If cleaning or changing the port doesn't help, it might be the battery itself or the power controller, and then self-repair is complicated by the monolithic construction of the housing, so you might want to go to a service center.
Frequent errors and safety rules
The life extension of the lithium polymer battery in your fitness bracelet depends on the correct operation. Many users make the mistake of leaving the device on charge overnight or for several days. Although modern controllers are able to cut off current, the constant maintenance of 100% charge under voltage accelerates the degradation of battery chemistry.
It is also strongly advised against using damaged cables or chargers with insulation impairments.Power surges in cheap Chinese power supplies can burn the charge controller inside the bracelet, after which recovery will be economically impractical.
- 💧 Moisture: Never charge a wet bracelet, even if the model is moisture-resistant. IP68, Contacts are open and short circuit is guaranteed.
- 🌡 Temperature: Do not charge the device in direct sunlight or near heaters.
- 🔌 Power: Avoid using heavy duty Quick Charges (Power Delivery) unless otherwise specified. USB 2.0.
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The optimal charging mode is to charge at 15-20% and withdraw immediately after reaching 100%.
Compliance with these simple rules will allow your Mi Band to keep battery capacity high even after two to three years of active use.Remember that replacing the battery in such devices is often more difficult and expensive than buying a new tracker.