How often will I need to replace the battery? March 03, 2018 18:25 Updated Follow Under normal usage conditions, Array’s battery will last many years. Replacement batteries will be available for purchase. Weather information. Related articles Will I be notified when the battery is low? How long does it take to charge the battery? What type of battery does the Array use? Can my Array lock be used in cold/hot weather? How often will the battery need to be charged?