How do I restart my scale? Acaia Support June 06, 2018 21:19 Updated Follow Plugging in the USB charging cable with a power source while your scale is on will restart your scale. Related articles My scale will not power on. Why not? The scale is showing a 3 digit error code, what do I do? Can I change the battery of the scale? How to update your scale's firmware The firmware update failed, or the scale is stuck in "Update" mode Comments 0 comments Article is closed for comments.