307sw 2004 battery draining?

click on this link and it should tell you all you need to find out what is using your battery power

thanks GGJ

I have followed those instructions but the Amp power shows 0.04 on my multimeter, well within the amps recommended when switched off.

When the battery is connected to both the + and - and a volt meter it connected you can see the volts dropping 12.5, 12.4, 12.3 etc at about a point every few seconds. As soon as I disconnect the + it jumps up a bit and is steady.

Another problem that I am also having but is probably not related is that the car will only rev to 2800 rpm. That is in all gears so it seems a bit sluggish the rest of the time too but that might just be my imagination. The Cam belt has just been renewed too but I didn't really notice any problem for the first week or so.

Try a new battery, i think the problem is there, if u took both leads of and put the tester on the batt and it dropped thats telling you that it needs replaceing.(i think iam right on this one??)

Hi Chris,

I'm coming a bit too late on this one. Possibly the battery has been drained too deeply on the faulty relay event (fans staying on), damaging the elements, which can't stand and keep the electric charge. I would replace the battery too. Moreover if it's the original one, 4 years ain't that bad. (the battery on my 206 is 6 years old, factory fit... I may be a bit lucky)

Regards,

-- G.T

Slight mis-understanding here. When both battery terminal leads are taken off the battery it holds its charge with no problems. It is only when both connections are attached that it drops the charge constantly. To check what is causing this I have done an Amp test.

If I leave the + on and take the minus terminal off to add a Amp Meter to the circuit (one wire from the amp meter to the Earth cable and one wire to the minus terminal this should tell me what Amps are being used up and that would be the reason why the battery is draining but the reading on the Amp Meter is 0.04 which is normal.

Then I am even luckier. My 406 is 10 years old (from first registration) in January and is still on the original battery. I have expected it to die for the last four winters but it's kept on going.

Just maybe worth confirming that you actually have 40 milliamps? These autoranging multimeters can be difficult to read on occasion.

I note that my 306 Diesel has a draw of about 40 milliamps when everything is off. I've no idea where it goes - maybe the central locking remote receiver? Any other ideas?

Julian.

I may be wrong, I often am, but I thought that the Amp Meter should go between the Poss terminal on the battery and the Poss lead to check the power consumption at any given time, always providing that the Amp Meter will read up to about 50 amps, with the engine switched off of course.

Bryan

yes Bryan, you are wrong about this one.

As I said Lenny, it's not often I'm right, seems I'm wrong again. ;-)

Bryan

Should not matter from an electrical perspective, the same current must flow in one lead and out the other.

Hi,

Yeah. I suppose the "negative lead" mention is due to the risk of big short if you ever touch the + lead with the body / engine.

Regards,

-- G.T

Hi,

I never tried such a measurement yet. Current goes to the radio memory, clock... and the central locking controller. And perhaps some other stuff I forgot to mention.

Regards,

-- G.T

Hi,

And it holds for what time ? I'm still in doubt here, come back and tell us if you fixed your car.

Regards,

-- G.T

still not sorted. The charge holder for ever (well for the 24 hours that I have left it anyway) when the plus terminal is disconnected but only the one hour at the most when it is connected. I have started to disconnect the plus everytime I stop. Oh, and the Anti Pollution error has arrived again with a drastic loss of power and the engine management light staying on. I have a feeling that this car is never going to be fixed!

I think you need a new battery. A discharge of about 40 milliamps for 24 hours should not cause a good battery any problems whatsoever.

Julian.

I would take it to a car electrician, you can keep on buying bits in the hope that you can fix it and never come up with the answer.

Bryan

It sounds its your battery so try and get new batt then go from there.

Fair enough, if you break the -ve connection to do the test there is nothing to short against.