What does it mean when I see a red battery symbol on the touch panel? Blair April 10, 2019 20:52 Updated A red battery symbol on the touch panel is a signal to replace your lock's batteries as soon as possible. Related articles My lock has an audible alarm after I input the PIN code. Why does my lock alarm after unlocking with the thumb turn? What if I lose my cell phone? What batteries does the DB series' locks use? Comments 0 comments Please sign in to leave a comment.