What happens if the Smart Lock’s batteries go flat?

As soon as the battery charge level falls below 20%, the Nuki app notifies you, giving you sufficient time to change the batteries or charge the batteries of your Nuki Power Pack. You can also use your key to lock/unlock your door if the lock has an emergency function. The average battery life is around 4 months with alkaline batteries and around 6 months with the Nuki Power Pack. Your Smart Lock’s power consumption will depend on the frequency of locking/unlocking actions and how smoothly they can be carried out.