How long will Alea's batteries last? Brad January 08, 2019 18:22 Updated Depending on usage, 2 to 3 years. Related articles Will I be notified when I need to change Alea's batteries? Can I buy Alea if I live outside of the USA or Canada? How do I control my Alea vents? How does Alea learn my preferences in my different rooms? Will Alea void my manufacture warranty? Comments 0 comments Please sign in to leave a comment.