Why is it important to charge Mi Band 3 correctly?
The Xiaomi Mi Band 3 fitness bracelet, released in 2018, is still popular with users due to its reliability and functionality. However, even such a simple device requires proper handling, especially when it comes to charging. Failure to follow basic rules can lead to rapid battery wear, malfunctions or even breakage of contacts.
In this article, we'll look at not only the standard charging procedure, but also the hidden nuances that the manufacturer doesn't always mention in the instructions, such as why the bracelet might not charge the first time, how to avoid overheating the battery, and what to do if the charging indicator doesn't burn, and how to extend the battery life by 20-30% through simple techniques.
If you've just bought the Mi Band 3 or are experiencing charging problems, this guide will help you understand all the details, and for power users, we've prepared common bugs and ways to fix them.
Compilation and preparation for charging
Before you start charging, make sure you have everything you need. The Xiaomi Mi Band 3 comes standard with:
- 📦 The fitness bracelet itself
- 🔌 Charging cable with USB-connector (type-A type)
- 📄 Short instructions (often in several languages, but without charge details)
If the cable is lost or damaged, you can use compatible analogs, but it's important to check them for the original. Cheap Chinese substitutes can have the wrong voltage, which will lead to battery damage. The original cable is labeled MDY-08-EM, which is a guarantee of safety.
Also prepare:
- 💻 Power source: computer, laptop, smartphone charger (with output) 5V/1A) power bank
- 🔍 Clean dry wipe (for cleaning contacts)
- ⏱ Timer (to avoid overloading the bracelet on charging)
Next Next post: How to Charge Mi Band 3
The charging process seems simple, but many users make mistakes early on.
- Take the strap off. Carefully pull the bracelet capsule towards the screen, it will come out of the mount. Don't put too much effort into not damaging the latches!
- Clear the contacts. On the back of the capsule are 4 gold contacts (two large ones for charging and two small ones for synchronization) wipe them with a dry wipe or a cotton swab dipped in alcohol.
- Connect the cable. Put the capsule in the charging module so that the bracelet contacts match the cable contacts.
- Put it on the power source. USB-connector to a computer, charger or power bank. The charge indicator will appear on the bracelet screen (battery animation).
- Wait until it's fully charged. It depends on the level of discharge, but it takes 1.5 to 2 hours on average.
If the indicator does not appear, check:
- 🔌 Density of the contacts (try to press the capsule slightly against the cable)
- 💡 Possibility of work USB-Port (connect another device)
- 🔋 Condition of the cable (whether there is damage to the insulation or contacts)
☑️ Pre-charging check
After full charging, disconnect the bracelet from power. Do not leave it on charging for more than 3 hours - this can reduce the battery life.
How long does the Mi Band 3 charge?
Charging time depends on several factors:
| Conditions | Charging time. |
|---|---|
| Charging from a computer (USB 2.0) | 2.5 hours |
| Charging from the network adapter (1A) | 1.5 hours to 2 hours |
| Charging from Power Bank (2A) | 1-1.5 hours |
| Charging at temperatures below +10°C | Up to 3:00. |
Note that if the bracelet is completely discharged (0%), the first 10-15 minutes of the charge indicator may not appear. This is normal - wait until the battery is slightly recharged.
The battery is also affected by the charging speed, and if the bracelet is used for more than a year, the time can increase by 30-50%, in which case the battery calibration is recommended:
- Discharge the bracelet to 0% and leave it off for 2-3 hours.
- Charge to 100% without interruption.
- Repeat the cycle 2-3 times.
💡
If the bracelet is charging too long (more than 4 hours), try using another cable or power source.
Common Mistakes and How to Avoid Them
Even experienced users sometimes make mistakes that shorten the life of the Mi Band 3.
⚠️ Never charge the bracelet from a power source with a voltage higher 5V (For example, from laptop or tablet chargers, this can cause the battery to bloat and the device to break down.
Error 1: Charging at high or low temperature. The optimal range for charging is +10 °C...+35 °C. At lower temperatures, the battery charges more slowly, and at higher temperatures it wears out faster.
Mistake 2: Using unoriginal cables: Cheap analogues can have the wrong polarity or voltage, resulting in:
- 🔥 Battery overheating
- 🛑 Failure to sync with the phone
- ⚡ Short circuit.
Error 3: Charging interruption. If you turn off the power bracelet halfway through the process, it can knock down the power controller, and the device will show the wrong charge level.
Error 4: Charging on the go. Some users plug the bracelet into a power bank and wear it on their hand while charging.
- 🤹 Unstable contact (bracelet may fall from the charging module)
- 🌡 Overheating due to poor ventilation
- 🔋 Incomplete charging.
What to do if the bracelet is not charged at all?
How to extend the battery life?
The Xiaomi Mi Band 3 battery is designed for 300-500 charging cycles, but with proper care, this number can be increased.
1. Avoid full discharge. Optimal charge range is 20%-80%. Regular discharges to 0% shorten battery life.
2. Don't leave it on overnight charging. Once you reach 100%, disconnect the bracelet from power. Prolonged exposure to power accelerates battery degradation.
3. Keep it properly. If you haven't been using the bracelet for a long time:
- 🔋 Charge to 50%
- 📦 Remove to a dry place at room temperature
- 🔄 Once every 3 months, charge up to 50% and discharge to 20%
Update your firmware. The manufacturer regularly releases updates that optimize battery consumption. Check the relevance of the software in the Mi Fit app:
Profile → Device settings → Update of firmware5. Disable unnecessary functions. Constantly active sensors (pulsemeter, notifications) consume charge. Configure them in the application:
- 📱 Profile → Notifications → Select applications
- ❤️ Profile → Heartbeat → Frequency of measurements
💡
Regular battery calibration (discharge to 0% and charge to 100%) helps to reset power controller errors and restore accurate charging level display.
What if the bracelet does not turn on after charging?
If the Mi Band 3 doesn't respond to the presses and doesn't turn on after charging, don't panic. In most cases, you can solve the problem yourself:
Step 1: Check the charge. Connect the bracelet to charge for 30 minutes. Sometimes after a deep discharge, it takes time for the battery to wake up.
Step 2: Reset the device.
- Connect the bracelet to the charger.
- Press and hold the touch button under the screen for 10-15 seconds.
- Wait for the vibration and reset.
Step 3: Reset your settings. If the reboot didn't work, reset via the Mi Fit app:
Profile → Device settings → ResetStep 4: Check the contacts. Check the charger and bracelet contacts for oxidation or damage. Clean them with alcohol if necessary.
⚠️ Attention! If the bracelet does not turn on even after these actions, do not try to disassemble it yourself. Inside there is a lithium battery, damage to which can lead to fire.