How many batteries does the Array come with? May 18, 2021 20:07 Updated Follow The Array Lock comes with one battery that will last 9-12 months. (Extra batteries and charging cradles can be purchased at buyhampton.com.) Related articles What type of battery does the Array use? Why is my lock showing offline after switching out the battery? Can my Array lock be used in cold/hot weather? Not Sure What Style and Color You Have? What type of battery does the Array use?