How do I know if the batteries or the Power Pack of my Smart Lock are empty?

Nuki informs you in several ways if the batteries or the Power Pack of
your Smart Lock are running low


With the Nuki Power Pack you benefit from an optimal power supply for your Smart Lock and battery life of up to 6 months. The Nuki Power Pack is compatible with every Nuki Smart Lock and can be easily retrofitted for your Nuki Smart Lock 1.0, 2.0 or 3.0.
Buy the Nuki Power Pack and power up your Smart Lock.

Nuki App

As soon as the battery status of your Nuki Smart Lock drops below 20%, you will receive a notification in the Nuki app. You can find the notification by tapping on the bell symbol at the top right.

A blinking Smart Lock

In addition to the message in the Nuki app, the LED on the Smart Lock also signals that the batteries of your Smart Locks will soon be empty.

Smart Lock 3.0 & 3.0 Pro
The red segment of the LED ring flashes 1x every 15 seconds (in total 4x).

Smart Lock 1.0 & 2.0
- Unlocked: The upper segment of the ring of lights blinks three times every 5 seconds..
- Locked: The upper segment of the ring of lights blinks twice every 10 seconds.

Push notification

You can additionally receive push notifications informing you when the battery level drops below 20%. In the Nuki app, you will find the option “Manage notifications” under "Settings" > "Features & Configuration". Here, you can log in with your Nuki Web account. This is essential, as notifications will then be transmitted through your Nuki Web account. You can activate Nuki Web in just a few steps.

Email notification

If you use a Nuki Web account, there is also the possibility to get notified by email when the battery level of your Smart Lock has dropped to a critical level. To use this feature, simply log into your Nuki Web account and activate the feature “Battery alerts via Email” in the administration of your Smart Lock. You will be notified by email when it is time to change the batteries.



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