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 recharged? Can my Array lock be used in cold/hot weather? How often will the battery need to be charged? How many batteries does the Array come with?