On 25/10/2019 15:28, Dave Plowman (News) wrote:
In article ,
T i m wrote:
The first daughter and b/f knew the battery we weak on the car they
had at the time was when they sat with the ignition / radio on for
some time and it wouldn't start afterwards. The car had been fine in
everyday use up to that point.

Modern cars ain't going to use much current with the ignition on and
engine not running.

Really? My current car has a current drain of about 5A for about ten
minutes after switching it off and getting out the car and locking it.
I haven't found why yet its not the cooling fan or anything moving in
the engine bay.

It has a drain of about an amp after that. About 180mA is the always on
dash cam.