If the unit is turned off and the only thing running is the clock and memory I think less than .02 amps was normal for most vehicles.
If it was over .02 amp draw you could have a dead battery in 14 days or sometimes less depending on how much more drain was happening and how big the battery was.
.1 amp or 100 milliampere I would not like to see.
Great responses! Can’t say enough about all the good guys on this site willing to share tHeir knowledge to help the rest of us. Will share pics when this is done.