Please charge your Power Pack with the enclosed USB cable before first use.
For optimal performance we recommend the using a charger with at least 5W of power.
For the first charge, it takes an average charging time of about 6 hours your Power Pack to be fully charged. During the charging process the LED flashes. Once the LED stops blinking the Power Pack will be fully charged the LED turns off.

There are two ways to charge the Nuki Power Pack:

1. The Power Pack can be removed from the Smart Lock to charge it with a standard USB-C charging cable (included). The Nuki Power Pack is located on the bottom of the Smart Lock. To open it, press the small lever in the arrow direction and take the Power Pack out of the Smart Lock. Then charge the power pack and reinsert it into the Smart Lock.
   
   
2. The Power Pack can also be charged directly on the door while inserted into the Smart Lock. To do this, plug a USB-C charging cable in the appropriate length into one of the two USB-C ports of the Nuki Power Pack and charge the battery directly at the door. Be careful not to block the door with the cable to avoid damaging the Power Pack.Thus, a permanent power supply of the Smart Lock is possible. It is not necessary to unplug the cable to use the Smart Lock. This is very suitable for short rental hosts as you don’t have to care about the battery level anymore.

The average charging time from empty to full is about 10 hours. During the charging process the LED flashes. When the Nuki Power Pack is fully charged, the LED turns off.

Please note that the Nuki Power Pack reaches the full charging capacity after 2-3 charging processes.

We recommend to use the Nuki charging cable, which is included with your order.

The Nuki Power Pack is equipped with a total charging capacity of 2500 mAh (4.8V DC | 2.5Ah | 12 Wh).

The average battery life of conventional alkaline batteries is around 6 months. The Nuki Power Pack lasts twice as long per charge and is also more environmentally friendly than alkaline batteries.

With an average use with 8-10 locking processes per day, the Nuki Power Pack will last around 12 months until it is completely empty.

Please note that the Power Pack reaches the full charging capacity after 3-4 charging processes.

At a power level of 20% Nuki will notify you via the Nuki app and directly on the Smart Lock. So there is enough time to replace your batteries of your Smart Lock. In case you are not able to change the batteries or to charge the battery of your Nuki Power Pack in time, you can still use your existing, mechanical key.

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

1. 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.
   
   
2. A blinking Smart Lock
   
   In addition to the message in the Nuki app, the ring of lights on the Smart Lock also signals that the batteries of your Smart Locks will soon be empty.
   
   - 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.
   
   
3. 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 new option “Manage notifications” under the Smart Lock Settings > Manage Smart Lock. 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.
   
   
4. 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.