Why Xiaomi Mi Band bracelet is not charged and how to fix it
The Xiaomi Mi Band fitness bracelets have long been one of the most popular wearables due to a combination of functionality and affordable price. However, even such proven gadgets sometimes have problems with charging - the device does not turn on after connecting to the network, the indicator does not burn, or charging is too slow. In 90% of cases, the reason lies not in the battery failure, but in the wrong connection of the charger or using non-original accessories.
In this article, we will discuss all the charging methods for different models of the Mi Band (from the first generation to the current Mi Band). 8), We'll explain how to recognize the original charger, and we'll give you a checklist to diagnose malfunctions, and we'll focus on common errors that shorten battery life. 30-40% — For example, using powerful power adapters or charging at extreme temperatures.
If your bracelet is dead and doesn't show signs of life, don't rush to throw it away. At the end of the article, you'll find instructions for "resuscitation" of a fully dead Mi Band with the help of improvised means.
Types of chargers for Xiaomi Mi Band: how to distinguish the original
Over the years, Xiaomi has used three fundamentally different types of chargers for its bracelets, distinguished by their design and connector:
- 🔌 Mi Band 1/2 — charging via micro-USB port (built into the bracelet body) is the most unreliable option, as the connector often broke when the bracelet was not tidy.
- 🧲 Mi Band 3/4/5 — magnetic charging with two contacts ("pinpinpin"). The original cable is marked MDY-08-EM length 20 centimeter.
- 🔋 Mi Band 6/7/8 — four-pin magnetic charging (also used for data transmission) The original cable is marked MDY-11-EM and has a tighter fit.
The main problem is that the market is full of non-original chargers that are indistinguishable from branded ones, but can damage the power controller of the bracelet.
| Sign. | Original Zoo | Fake Zoo |
|---|---|---|
| Marking on cable | Clear MDY-XX-EM seal, Mi logo | Blurred symbols, typos, lack of marking |
| Magnets | Strong, bracelet "attracts" itself | Weak, you need to press manually. |
| Contacts | Golden, no scratches. | Dull, with traces of oxidation |
| Packaging | Tight cardboard with hologram | A soft box without protective elements |
⚠️ Note: Use of non-original chargers with Mi Band 6/7/8 If the bracelet starts to reboot after charging, reset it to factory settings via the Mi Fitness app.
Step-by-step: how to charge Xiaomi Mi Band correctly
The charging process seems simple, but many users make mistakes that shorten battery life. Follow this instruction to avoid typical problems:
- On the Mi Band 3-8, you take the capsule out of the strap and pull it towards the screen. On the Mi Band 1/2, you just need to bend the strap away from the connector.
- Connect the charger. For the Mi Band 1/2, insert the micro-USB cable into the port on the bracelet body. For the Mi Band 3-8, attach a magnetic pinclip to the contacts on the back of the capsule. It should lock with a click.
Connect to the power source.
5V/1A
2A
Wait for full charge.
Mi Band 1/2
Average charging time:
- 🔋 Mi Band 1/2: 1.5–2 hour 100%).
- ⚡ Mi Band 3/4/5: 1 hour 80%), 1.5 hour 100%).
- ⚡⚡ Mi Band 6/7/8: 40–50 minutes (quick charge).
Check the integrity of the cable and contacts |
Use the original RAM or certified analogue |
Connect to the adapter. 5V/1A (non- USB 3.0 port)|
Do not charge at a temperature below 0°C or higher than 40°C-->
⚠️ Warning: If the bracelet does not charge for more than 30 minutes, and the indicator does not burn, try to clean the contacts on the capsule and charger with a cotton swab dipped in alcohol.
Frequent charging errors and how to avoid them
Even experienced users sometimes make mistakes that lead to rapid battery degradation or bracelet failure. TOP-5 most dangerous:
- 🔥 Use of powerful adapters. Charge from the tablet (2A) laptop (USB 3.0) It's too high a current to overheat the battery. 5V/1A (For example, from Xiaomi Redmi smartphones).
- ❄️ Charging in cold or heat: Optimal temperature for lithium polymer batteries is 10-35°C. Charging at 0°C reduces capacity by 20%, and at 40°C and higher risk of battery bloating increases 3 times.
- 📵 Interrupt charging. If you disconnect the bracelet from power to 50-70% of the charge, the controller may miscalculate the capacity, which will lead to a rapid discharge in the future. Always charge to 100%.
- 🔌 Use of damaged cables: Grated insulation or bent contacts can cause short circuit. Check the cable before each use.
- 💧 Moisture on contacts, even if the bracelet has 5 protections ATM, charging a wet device can cause contacts to corrosion.Wash the capsule with a dry wipe before connecting.
If you notice that the bracelet began to discharge in a day instead of the usual 5-7 days, check the battery status in the Mi Fitness application (Device Profile). → A value below 80% means that the battery has degraded and needs to be replaced.
What if the bracelet stopped turning on after charging?
How to charge Xiaomi Mi Band without a native charger
The situation of a charger being lost or broken is familiar to many. Fortunately, there are several ways to charge a bracelet without the original cable - but all require caution.
Method 1: Use of universal magnetic charging
For the Mi Band 3-8, you can buy a universal magnetic charge with adjustable contacts (for example, Baseus Magnetic Charger).
- 🔌 The polarity of the contacts coincides (plus to plus, minus to minus).
- 📏 The distance between the contacts is 4-5 mm (as on the original RAM).
- 🔋 The voltage is not higher. 5V.
Method 2: Direct connection to power supply (for experienced)
If you have electronics skills, you can connect the bracelet directly to the USB-port through resistor 100-200 ohms:
- Carefully remove the lid from the back of the capsule (on the Mi Band 3-5 it is held on the latches).
- Seal the wires to the battery contacts: red to +, black to -.
- Connect through the resistor to USB-port 5V).
⚠️ Warning: This method voids warranty and can lead to fire danger if polarity is confused or if a power source is too powerful!
💡
If you lose your charger frequently, buy a case with a built-in Power Bank for the Mi Band.It protects the bracelet from damage and allows you to charge it on the road without additional cables.
How much is the battery Xiaomi Mi Band and how to extend the life of
The average lifespan of a lithium polymer battery in the Mi Band is 2-3 years (or 500-800 charge cycles), but if properly operated, this lifespan can be extended to 4-5 years.
- 🔄 Avoid full discharge. The optimal charge range is 20 to 90 percent. Regular discharge to 0% reduces capacity by 10 to 15 percent per year.
- ☀️ Keep the bracelet in a cool place at 0-10.°When switched off, the battery loses only 2-3% of its charge per month (vs. 10-15% at room temperature).
- 🔌 Use original accessories. Poor-quality chargers can deliver unstable voltage, which accelerates battery degradation.
- ⚡ Do not charge on the go. If the bracelet vibrates or actively synchronizes data during charging, this increases the load on the battery.
To check the current state of the battery:
- Open the Mi Fitness app.
- Go to Profile → Your Device → Battery Status
- If the value is below 85%, consider replacing the battery (on Mi Band 1-5 this can be done independently, on Mi Band 6-8 you need a service center).
| Model | Battery capacity | Duration of service (cycles) | Cost of replacement |
|---|---|---|---|
| Mi Band 1/2 | 45 mAh | 300–400 | 500–800 ₽ |
| Mi Band 3/4 | 110 mAh | 500–600 | 600–1000 ₽ |
| Mi Band 5 | 125 mAh | 600–700 | 800–1200 ₽ |
| Mi Band 6/7 | 125-140 mAh | 700–800 | 1000–1500 ₽ |
| Mi Band 8 | 190 mAh | 800–1000 | 1200–1800 ₽ |
💡
The most common reason for fast discharge of the Mi Band is background synchronization with the application. Turn off automatic synchronization in the Mi Fitness settings if you do not use it constantly.
What to do if Xiaomi Mi Band is not charging at all
If the bracelet does not respond to the charger, does not show the indicator and is not determined by the application, try the following steps:
- Check the power supply. Connect the charger to another adapter or USB-Try charging a Power Bank bracelet or laptop bracelet.
- Clean the contacts. Wipe the contacts on the bracelet and charger with an alcohol wipe. Make sure the contacts are not oxidized (greenish coating).
- Reset. Mi Band 1-5: press the touch button for 20 to 30 seconds. Mi Band 6 to 8: touch the screen 5 times in a row, then hold your finger for 10 seconds.
Check the integrity of the capsule.
- Check the case for cracks or swelling (a sign of a faulty battery).
- Shake the bracelet – if something rattles inside, it may indicate disconnected contacts.
If nothing worked, it's probably a problem with the power controller or the battery.
- 🛠️ For Mi Band 1-5 you can replace the battery yourself (video instructions are available on YouTube).
- 🏥 For the Mi Band 6-8, contact the service center – these models have adhesive body connection, and disassembly without special tools can damage the screen.
⚠️ Warning: If the bracelet is swelling or smelling, don't try to charge it! These are signs of battery failure that could lead to fire. Dispose of the device according to the rules for handling lithium-ion batteries.