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19th January 2020, 15:48 | #21 |
Gets stuck in
Rover 75 Diesel Tourer, called Perseverance Join Date: Nov 2011
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At an estimate, a half charged 70Amp hour battery (=35Ah) would discharge with a current of 0.09 amp in ~ 390 hours (35/0.09).
As you state your battery is going flat in several days (~48 hours), I would say that your standby current, (while higher than it should be), is NOT responsible for your battery going flat in several days. Personally I would suspect the wipers wiping when it gets sufficiently damp. It has the necessary current consumption to flatten a battery in the timescale mentioned, leaves absolutely no evidence, unless actually witnessed, and is known to happen. Personally I would remove the wiper fuse overnight, and see what happens. But I am open to other ideas. |
20th January 2020, 19:14 | #22 |
This is my second home
R75 Saloon. Join Date: Feb 2009
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Batteries from new can be duff.
That 0.09 leak is not the problem. I'm beginning to suspect your battery.------( Or your multi-meter. )--- |
21st January 2020, 05:49 | #23 |
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Rover 75 Diesel Tourer, called Perseverance Join Date: Nov 2011
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It could be your ammeter is inaccurate.
Inside the sun visor courtesy light is a 1.2W festoon bulb, that will draw ~0.1A ( which is near enough 0.09A.) (Or try a 3W interior light bulb at 3W ~0.25A) To check your ammeter is accurate, measure the current flowing through that bulb. What meter current range gave you that reading of 0.09A ? Was it 0.2A ? 0.3A ? 2A ? 10A ? 20A ? It may be the battery that is at fault. I believe that 20 near complete discharges is all it takes to destroy a car battery. |
21st January 2020, 22:03 | #24 |
This is my second home
R75 Saloon. Join Date: Feb 2009
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There's an echo in here ---Lol.
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22nd January 2020, 15:14 | #25 |
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Rover 75 Saloon Join Date: Jun 2018
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Something similar happened to me. I turned out to be the the locking mechanism on the petrol cap. I located it by removing fuses one by one. it was cured by diconnecting the battery for ten minutes. It must have the ECM requiring a re-boot.
Fred |
30th January 2020, 17:36 | #26 |
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rover 75 2.5 saloon Join Date: Nov 2007
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I tried locating the problem by taking out fuses one by one, but didn´t really find it. So I eventually brought the car to an car electrician. He located the problem as related to the bluetooth, which I never use. In november there was some welding done. During welding they put clamps on the battery but it didn´t protect the bluetooth apparently. He said that the old Nokia bluetooth system is vulnerable and connected partly outside the fuses and therefore cannot be located as the source by taking out fuses.
So I hope he is right, Thanks for the help and tips |
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