Nothing to do with uC: measuring parasitic draw from car battery

Author	Message
matherp Guru Joined: 11/12/2012 Location: United Kingdom Posts: 11861	Posted: 09:52pm 15 Aug 2024       I had a car that was routinely left at an airport car park for extended periods (annual parking permit). I had a high current isolation switch fitted to the battery so that there was no current drain, before that it was almost always flat after a month. Modern cars have so much electronics that residual current drain is a real issue.