Our Secure models are powered by 4 AA batteries and our Vision model is powered by 8 AA batteries. We recommend using Duracell or Energizer, or any other good brand. We do not recommend using rechargeable or Lithium batteries as alkaline batteries have proven to work best with our locks. Typically, batteries will last 9 months to a year with normal use and 6-9 months with heavier use. We recommend using Duracell or Energizer Alkaline batteries as they work best for our locks.
We have an indicator light on the lock that tells you the battery is low and the app shows the battery level as well. The lock will also beep when the battery is getting low. If the batteries go completely dead, you can still power the lock with a 9V battery by holding it against the connector located on the bottom of the exterior side of the lock. This will power the lock so you can enter the door code to unlock the door.