Damn those flat batteries!!!

[CrankN]

Ha ha, wasn't so much of a drama just got my father'n'law to come around and give me a jump start.....

See what happened was my 2.5 y/old chucked a tanty in the car and wouldn't get out when my wife got home from shopping with the kids. Jodi took our 6 month old in to the cot to finish off her sleep and returned to find Nina in the front seat with half the buttons pressed in and dials changed.

Reset everything but didn't notice the keys were turned to the 'on' position.

12 hours or more later our battery was dead flat. Wouldn't even click when turning the key and the lights wouldn't come on.

Multimeter show 4.8V at the battery.

So it got me thinking, when the key is left 'on' what is running to make the battery go flat?

I thought the usual dash lights, fans (AC on), elec. fuel pump primeing, but didn't think they would be enough to make it go flat. Didn't have anything running of the 12V socket.

What else would be running when it's on 'on'?

[Madrox]

not sure exactly.

also the interior light might make it go flat and the stereo and maybe the parkers or headlight might of been on.

wen we tint a cars at work, even brand new ones with new batteries,

1 hour of having the ignition on makes the car go flat.

thats with having the radio on low and putting the windows up and down at most 4 times.

it doesn't take much to make it go flat.

[CrankN]

After an hour... that's interesting, must be something sucking out the juice. I would imagine you would just have it on accessories as well.

Heath.