Updated 19 October 2026.
A Xiaomi Mi Band with a black screen is not necessarily broken. It may have an empty battery, a poor connection to its charger, or a charger that does not match that model. Work through those checks before buying a replacement.
Match the charger to the exact band
Find the model name on the packaging, purchase record or connected app. “Mi Band charger” is not a reliable compatibility description: older bands use different charging cradles, while later models may use magnetic contacts.
Use the original cable or a replacement explicitly listed for your model. Xiaomi’s charging and power-on checklist recommends checking the cable, adapter and contact points. A magnetic plug attaching to the band does not, by itself, prove it is the right charger.
Try these checks in order
- Inspect the band and cable. Stop using a damaged cable. If the band is swollen, unusually hot or visibly damaged, disconnect it and arrange service.
- Clean and dry the contact points. Disconnect power first. Gently wipe the band and charger contacts with a soft, dry cloth. Let sweat or moisture dry fully; do not scrape the contacts with metal.
- Reconnect carefully. Make sure the charging points line up. Some older models must be removed from the strap to fit their cradle; do not force a newer model into an older dock.
- Change the power source. Try a known-working USB adapter that meets the band’s manual. A power bank may switch itself off because a fitness band draws very little current.
- Allow time for a flat battery. Leave the correct charger connected for at least several minutes before judging the screen. Follow the model’s recommended charging period if it has been unused for a long time.
Xiaomi’s general band charging guidance specifically mentions contact problems, deeply discharged batteries and power banks that stop supplying power. A different adapter is a more useful test than repeatedly tapping the screen.
Use the result to choose the next step
| What happens | What to check next |
|---|---|
| The charging symbol appears | Let the band charge, then test normal use. |
| Charging starts only when you hold the cable | Inspect alignment and try another compatible cable. |
| It charges from an adapter but not a power bank | The power bank may be cutting off its low-current output. |
| Nothing changes with a known-good compatible cable and adapter | Contact Xiaomi or the seller for assessment. |
The photos below show older Mi Band charging arrangements. Treat them as examples of why the model matters, rather than instructions for every Smart Band.
What to avoid
Do not hit or tap the band to “wake” the battery, heat it, freeze it, open the case or short the charging pins. These steps do not provide a controlled diagnosis. Repeatedly buying generic cables can also cost more than asking the manufacturer to identify the right part.
If the screen returns, charge the band sufficiently before attempting a restart or firmware update. If it stays dead after the model’s normal charging period, follow the service advice in its manual. For example, Xiaomi provides a separate Smart Band 9 charging guide; its details should not be applied automatically to every older Mi Band.
FAQs
Why does the band stay black when I plug it in?
A very low battery may need several minutes before displaying a charging indicator. A wrong charger or poor contact can cause the same symptom.
Can I use any magnetic Mi Band cable?
No. Check the exact model compatibility, including the contact layout and the manufacturer’s requirements.
Should I factory-reset a band that will not turn on?
No. A reset is not available on a dead device and does not replace checking the charging connection.
When should I stop troubleshooting?
Stop immediately for damage or unusual heat. Otherwise, seek service if a known-good compatible charging setup produces no response after the recommended charging period.