What's a typical drain on a battery while connected to a car?

[mitch_04]

Most every time I look up the allowed drain on newer vehicles while chasing a draw, its .25 amps or less.

[dontlifttoshift]

When you got .50 amps, who long had it been since they had been on?

I don't recall the actual timing but it takes a while for the ecm to go to sleep mode.

[rickpaw]

Originally Posted by dontlifttoshift

When you got .50 amps, who long had it been since they had been on?

I don't recall the actual timing but it takes a while for the ecm to go to sleep mode.

The car had been sitting less than 24 hr since I last ran it, when I made the measurement.

[dale68z]

Originally Posted by mitch_04

Most every time I look up the allowed drain on newer vehicles while chasing a draw, its .25 amps or less.

yes.

Make sure you allow the system to time out. I have had to wait an hour sometimes.