Battery going flat...

InfernoSR · 16-09-2007, 10:47 AM

We found that my battery goes flat in about 2 days. I purchased this car with this problem, as the seller had told me that whenever he went anywhere, or when the vehicle will sit for a while, he would disconnect the battery

: ... but never told us he did it due to flat batteries :togo: ... he had installed a terminal disconnector, he installed it on the earth (good boy) and all you have to do is wind it in to connect it.

Now... we believe it maybe a problem with leakage from the alternator... any other suggestions?

accurate1 · 16-09-2007, 11:47 AM

Connect a Digital multi meter at the battery to measure parasitic current draw, if it is more than about 50 milliamps start pulling fuses one at a time until it drops down to almost nothing. This will at least tell you which circuit has the problem, it may be as simple as the boot light on all the time.

JC · 16-09-2007, 12:13 PM

Quote:

Originally Posted by accurate1

Connect a Digital multi meter at the battery to measure parasitic current draw, if it is more than about 50 milliamps start pulling fuses one at a time until it drops down to almost nothing. This will at least tell you which circuit has the problem, it may be as simple as the boot light on all the time.

Genius solution! It's why I like these forums - there's always a solution "out of the box" that means you can locate the issue yourself, instead of paying a sparky $80 an hour to do the same thing - may still the sparky to rectify the issue, but at least it's already been identified.

InfernoSR · 16-09-2007, 12:20 PM

Quote:

Originally Posted by accurate1

Connect a Digital multi meter at the battery to measure parasitic current draw, if it is more than about 50 milliamps start pulling fuses one at a time until it drops down to almost nothing. This will at least tell you which circuit has the problem, it may be as simple as the boot light on all the time.

Is that just using the DCV measure?

Quote:

Originally Posted by JC

Genius solution! It's why I like these forums - there's always a solution "out of the box" that means you can locate the issue yourself, instead of paying a sparky $80 an hour to do the same thing - may still the sparky to rectify the issue, but at least it's already been identified.

And you dont need to pay the sparky for the diagnostics

:

**Stav** · 16-09-2007, 12:24 PM

Blueprint ..you helped me with your posts and Ill help back. Go to the car and do this check.Pull down your rear seats and look into your back boot.Is the back boot light on all of the time? If so then your back boot light switch is faulty.Also do you have a car alarm?

InfernoSR · 16-09-2007, 12:30 PM

No to car alarm, and the boot light is off...

And as i said before... i'm here to learn and to help others with what I know.

**aussiblue** · 16-09-2007, 01:48 PM

Clamp on DC ammeter is best way to check source of current leaks as you don't need to disconnect anything and you can follow the wiring harness along and branch off as required to track the source.

sly · 16-09-2007, 03:28 PM

Quote:

Originally Posted by BLUEPRINT

No to car alarm, and the boot light is off...

And as i said before... i'm here to learn and to help others with what I know.

In the same vein, if your glovebox lid droops a bit the gb light can be on all the time. When it gets dark, check if any light is coming around the lid.

InfernoSR · 16-09-2007, 03:34 PM

ooo, never thought of that... thanks.