Kardena smartwatch not charging or won’t switch on

Is your Kardena smartwatch unresponsive, not displaying anything or won’t switch on?
First, check the power supply.

1. Check the charging contacts

Check the charging contacts on the back of the smartwatch and on the charging cable.
Sweat, skin oils or dirt can interfere with the charging process.
Carefully clean the contacts with a dry, soft cloth or a cotton bud.

⚠️ Important:
Don't use aggressive cleaning agents or sharp-edged objects to clean the electrical contacts.

2. Connect the charging cable correctly

Ensure that the magnetic charging cable is positioned correctly and that the charging contacts are fully aligned.

3. Try a different power source

Try:

• a different USB port
• a different suitable USB power adaptor
• if available, a different compatible charging cable

4. Charge the smartwatch for at least 30 minutes

If the battery is fully drained, it may take some time before the smartwatch responds again.
Leave the watch connected to the charger for at least 30 minutes first.

ℹ️ Note:
If the battery is deeply discharged, a charging icon may not appear immediately.

5. Turn on the smartwatch

Then press and hold the power button for several seconds.

Still no response?

If neither a charging icon nor any other response appears, please contact Kardena Support.

💡 Tip for a quick response:
Please let us know the exact smartwatch model and whether any response appears on the display when you connect the charging cable.

Updated on: 10/09/2026