This is a great question!
When the plate is idle, it draws about 10-12mA. When communicating with the cloud, which happens once per hour, the current draw is around 40-50 mA. When a new plate image is being refreshed, the current can peak to 80mA momentarily.
All in all, very little draw and through rigorous testing is not expected to have any impact on the 12v battery!
If you have any questions, please feel free to email us at firstname.lastname@example.org, chat in via the Reviver Auto website or your Rconnect account, or give us a call at 866-4-RPLATE Mon-Fri 9 am - 6 pm PST.