Your Smart Lock gets a real power pack with the Nuki Power Pack. Experience up to 100 percent longer runtime compared to conventional batteries. The rechargeable battery pack guarantees power supply for up to 6 months without interruption. The free Nuki app shows the current battery level and informs you automatically as soon as it drops below 20 percent. With the included USB-C cable the Nuki Power Pack can even be charged during operation. This allows for a permanent power supply of the Nuki Smart Lock. More power for the Nuki Smart Lock thanks to rechargeable battery pack. Up to 100 percent longer battery life compared to alkaline batteries. Easy retrofitting possible. Compatible with all Nuki Smart Locks. No battery change. Rechargeable via USB-C even during operation. Exact overview of the battery level in the Nuki app. Automatic push notifications when battery level is below 20 percent.