Charge your Smart Lock Ultra Batteries

With your Smart Lock Ultra you have two possibilities when it comes to charging: Mounted on the door or unmounted from the door.  You can do this with the magnetic charging cable included (2m, USB-C to magnetic plug). The average charging time from empty to full is about 2 hours.

Charging on the door

Your Smart Lock performs lock actions in this charging mode. Don't worry: The part of the Smart Lock where you plug in the magnetic charging cable doesn't rotate during locking. Nuki recommends this charging mode as you can still lock your door while you are charging.

Do you want to activate the “Charging on the door” mode? Simply plug in your charging cable. Be careful not to block the door with the cable. This charging mode is activated automatically.

Charging Smart Lock Ultra on the door.jpg

Charging off the door

If you want to charge your Smart Lock unmounted from the door, we recommend the “Charging off the door” mode. It rejects automatic locking actions in this mode. These actions include:

  • Scheduling
  • Night Mode
  • Auto Unlock
  • Auto Lock

So if a family member approaches your home or the night mode triggers a locking action, your device will not move. After all, you are charging it unmounted from the door. It is best to use this mode during the night, as this is when the fewest people use your door.

Do you want to activate the “Charging off the door” mode? Plug in your charging cable and press the button in the next 15 seconds.

Have you activated the “Charging off the door” mode by mistake? Simply unplug the charging cable and plug it back on without pressing the button afterwards. You can still perform locking actions in the “Charging off the door” mode. So if the Smart Lock is mounted on the door, you can still operate it.

Charging Smart Lock Ultra off the door.jpg

Check Charging Mode

You can always check which charging mode is active via the Nuki App and—if activated—in Nuki Web.

  • Nuki App: Enter the device settings and go to "Features & Configuration" > "Battery".
  • Nuki Web: Choose the device and enter “Manage Device” > "Battery level".

The Smart Lock also shows you that it is charging: The red segment of the LED ring first blinks and then glows dimmed. As soon as it is fully charged, the red segment turns off again.
The average charging time from empty to full is about 2 hours.

Battery type and battery life

Your Smart Locks Ultra has a built-in battery pack. Our many years of experience with Smart Locks have led us to choose these batteries for the best user experience. The batteries are permanently installed, so you don't have to service or replace them.

Average lifetime of the Smart Lock Ultra

 Battery life depends heavily on your usage, door type, locking modes, and other factors. In general, you can expect the following ranges for your Smart Lock Ultra’s battery life:

  • 7—9 months without remote access
  • 5—7 months with remote access via Thread
  • 4—6 months with remote access via WiFi

As soon as your battery status drops below 20%, we inform you in several ways if the batteries of your Smart Lock are running low.

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