The situation is familiar to many: the Xiaomi Mi Band fitness bracelet died at the most inopportune moment, and the native charging cable was lost or broke. Buying a new one is waiting for delivery, and without a gadget it is inconvenient to track steps, pulse and notifications. Fortunately, there are alternative ways to recharge the device without the original accessory.
In this article, we will discuss 7 How to Charge Mi Bands with a Powertrain 4/5/6/7 (and even older models) with the help of improvised means - from universal USB-You'll learn which methods are safe for the battery and which can damage the bracelet, and you'll get step-by-step instructions with photos and video examples. Not all methods are equally effective, so we have compiled a compatibility table for different generations of bracelets.
We warn you right away that some of these methods require precision and minimal technical skills, and if you're not sure about your abilities, you'd better wait for the original charger or go to the service center. But if you're willing to experiment, read on!
1.Use of universal USB-cable (the safest method)
If you have any USB-Type-C or Micro-USB cables, which can be adapted to charge the Mi Band, are suitable for most models except the Mi Band. 1/2 (They have a different connector. You'll need to:
- π USB-cable (preferably with a flat plug)
- π Scotch or tape
- βοΈ Scissors or stationery knife
- π Lupa (optional, for accuracy)
Instructions:
- Cut off from USB-If the cable is new, you can just disassemble the plug case.
- Clean the red (+5V) black (GND) 5-7mm wires, green and white (data) can be bitten off, they don't need it.
- Insert the bracelet into the charging socket and press the cleaned wires to the contacts on the back of the Mi Band. Red wire - to the plus contact (usually marked with the letter P or +), black, to the negative (N or β).
- Lock the wires with tape so they don't move. USB Power supply (computer, power bank, phone charging).
βοΈ What to check before connecting
β οΈ Note: Do not use charging with voltage higher 5V (For example, from a laptop, this can burn the power controller of the bracelet, and avoid short circuits: do not allow bare wires to come into contact with each other.
This method works consistently, but it requires caution. If the bracelet does not start charging, check:
- π Polarity of connection (change the wires in places).
- π Quality of contact (maybe the wires are not tightly pressed enough).
- π‘ Power supply (try another one) USB-port).
2. Charging via Power Bank with magnetic cable
If you have a power bank with a magnetic connector (for example, for wireless headphones or smart watches), it can be used for Mi Band. 6/7. These models have metal contacts on the back side that match the magnetic charges of some accessories.
How it works:
- Put a power bank magnetic connector on the back of the bracelet, and the magnets are going to be drawn to the contacts.
- Make sure the charge indicator on the bracelet is on fire (the Mi Band 7 has a white light bulb next to the sensor).
- Secure the bracelet with tape or rubber band so that contact is not interrupted.
Advantages of the method:
- β‘ Speed (no need to solder or cut wires).
- π Safety (magnetic connector protects against short circuit).
- π Universality (suitable for other gadgets).
β οΈ Note: Not all magnetic charging is suitable - check compatibility in the table below.For example, charging from the Apple Watch or Samsung Galaxy Watch is not compatible with the Mi Band due to different voltage standards.
| Model Mi Band | Compatible magnetic charging | Incompatible charging |
|---|---|---|
| Mi Band 6 | Xiaomi Mi Watch, Amazfit GTS | Apple Watch, Samsung Galaxy Watch |
| Mi Band 7 | Xiaomi Smart Band Pro, Huawei Band 6 | Garmin, Fitbit |
| Mi Band 5 | Redmi Watch, Haylou Solar | All voltage charges >5V |
3. Solar charging: myth or reality?
You can find tips on charging the Mi Band with solar panels on the Internet (for example, from a garden flashlight or a power bank with a solar battery). In theory, this is possible, but in practice, the efficiency is extremely low.
Pros:
- π Environmentally friendly (no electricity required).
- π Suitable for emergency situations (e.g., on a hike).
Cons:
- β³ Very slow charging (up to 10-12 hours on full charge).
- βοΈ Depends on the weather (in cloudy weather, almost does not work).
- π Adapter required (cannot be connected directly).
How to charge Mi Band from the sun:
- Buy or take a solar panel with an exit USB 5V (Xiaomi Solar Power Bank, for example).
- Put her in. USB-cable (as in the first method) or use a magnetic adapter.
- Place the panel under direct sunlight and wait for the start of charging.
Why is solar charging ineffective for the Mi Band?
β οΈ Warning: Don't leave the bracelet in the sun for long - overheating can damage the lithium battery.Optimum charging temperature: 10-35Β°C.
4 Charging via smartphone (if any) OTG-cable)
If you have a smartphone with support OTG (On-The-Go, which can be used as a power source for the Mi Band, is suitable for Android devices with a Type-C or Micro-USB connector.
What you need:
- π± Smartphone with OTG (Most of the modern models support).
- π OTG-Adapter (if not included in the package).
- π USB-cable (as in the first method).
Instructions:
- Connect. OTG-smartphone adapter.
- Connect to the adapter the cleaned USB-cable (with red and black wires).
- Press the wires to the Mi Band contacts and secure with tape.
- A notification may appear on your smartphone about the connection of an unknown device β ignore it.
Important:
- π Charging will go slowly (current is limited to smartphone).
- π The charge level of the phone will fall (it is better to use the power bank).
- β‘ Some phones (e.g. Xiaomi with the MIUI) can block OTG-Food β this method will not work.
π‘
Before connecting, turn on the smartphone mode βSaving chargeβ β this will increase the time of operation OTG-port.
5. Use of Charging from Other Devices (Compatibility)
If you have chargers from other gadgets, you can try adapting them for the Mi Band (5V) And we'll look at the options:
Compatible charges:
- π§ Charges from wireless headphones (Xiaomi AirDots, Redmi Buds - suitable for Mi Band) 6/7).
- β Charging docks from smart watches (Amazfit Bip, Huawei Watch) GT).
- π± Charges from old phones with Micro-USB (need to modify the cable).
Incompatible charges:
- π Charging from Apple (another voltage standard).
- π Laptop chargers (19V burn out).
- π Charging from electric toothbrushes (unstable voltage).
How to adapt the charge from headphones:
- Disassemble the charger case of headphones and find contacts + and β.
- Seal them wires or press them to the Mi Band contacts.
- Secure the design with tape and connect the case to the power source.
β οΈ Warning: If the charger has a built-in battery (for example, a case from headphones), first fully charge it from the mains, and then connect to the bracelet.
6. Emergency battery charging (extreme case)
If you're not on hand USB-devices, but there are finger batteries (AA or AAA), They can be used for emergency recharging, and it's a risky method, but it can sometimes save you when you're camping or in the country.
What you need:
- π 2 batteries AA (1.5V each = 3V summarily).
- π§² Holder for batteries or scotch.
- π Wires (can be taken from an old mouse or keyboard).
Instructions:
- Connect batteries in series (+ k- to obtain 3V.
- Connect the wires to the free contacts of the batteries.
- Connect the wires to the Mi Band (red to the +, black-to β).
- Secure the design and watch the charging indicator.
IMPORTANT: Tension 3V lower-than-standard 5V, So charging will be very slow (about 1% per hour) and don't leave the bracelet plugged in for more than 2-3 hours, which can drain batteries to critical levels.
β οΈ Warning: Never use batteries 9V (For example, βCronaβ β they give too high voltage and burn the Mi Band power controller.
7. Wireless charging: Does it work?
Many modern smartphones support wireless charging (Qi), and it is logical to assume that it can be charged Mi Band. Unfortunately, this is not possible for several reasons:
- π‘ Mi Band doesnβt have a built-in coil for wireless charging.
- π Power Qi-charging (5β10W) It is too high for a small battery bracelet.
- π The bracelet contacts are not compatible with induction standards.
However, there is a workaround: you can use a wireless power bank with USB-exit and connect USB-cable (as in the first method:
- Take a Qi-power bank (e.g. Xiaomi Wireless Power Bank).
- Put him on. USB-port-cleaned.
- Press the wires to the Mi Band contacts.
Itβs not exactly βwirelessβ charging, but it allows you to use Qi devices indirectly.
π‘
Wireless charging directly for the Mi Band is not possible because there is no built-in coil, but you can use the Qi-power bank as a power source for the Mi Band. USB-cable.