Battery drainage

[berg944]

My new battery goes flat if the car is not used for a week?

I thought this might be the CD Player or the alarm so I remove the battery earth and connected an amp meter in line.

Tested with the doors closed as the interior light relay uses 0.1 amp

Ignition off....................................................0.18 amp

Alarm and CD player and clock unplugged ......0.11amp

I then removed every fuse one at a time but the meter did not drop any lower!

Anybody suggest what is using 0.11 amp?

Does not sound much, but put another way it is 11 amp every 100 hours

Watt should the consumption be? (sorry about that)

 

[Guest]

Somewhere around/under 0.075 amps should be about right. That would give your battery over a month to die.

One thing you may have going on is a very soft short. A positive somewhere has enough crap around it and a ground that a current pathway is established. Not a very good one but enough to drain a battery in time.

 

[nfearn]

I can't recall if it's fused or not, but have you checked that the power supply to the aerial amplifier is not attached to a permanently live feed? It's the black wire that's wrapped around the coaxial aerial cable.

The fact that you mention the CD player as a possible cause made me think that you might have been changing components etc recently.