How often will I need to replace the battery? November 06, 2018 17:45 Updated Follow Under normal usage conditions, the Array’s battery will last many years. Replacement batteries and battery chargers can be purchased at ArrayLock.com. Weather information. Related articles Will I be notified when the battery is low? How often will the battery need to be charged? How often will the battery need to be recharged? Can my Array lock be used in cold/hot weather? How many batteries does the Array come with?