How many batteries does the Array lock come with? November 08, 2018 22:11 Updated Follow The Array Lock comes with two batteries one to keep in the lock and one to keep on the charger. (Extra batteries and battery chargers can be purchased at arraylock.com) Related articles How often will the battery need to be charged? What type of battery does the Array use? Array Master Reset (Discovery Mode) Array Master Reset (Discovery Mode) Is my data secure?