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PostPosted: Tue Sep 15, 2020 12:17 pm 
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Joined: Thu Apr 19, 2018 2:26 pm
Posts: 12
Car Models: 1983 99 GL
Iva had a problem with my ‘83 99 GL battery draining if I don’t dive it for 3 or 4 days. With ignition off 0.12A are being drawn from the battery and 0.1 of that is going to to clock (0.02 to the indicators) , is the normal? Because it seams a bit high. It’s a 5 speed GL so I have the clock that’s part of the Rev counter.


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PostPosted: Tue Sep 15, 2020 12:52 pm 
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Full Pressure Turbo
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Joined: Sat Jul 08, 2006 9:10 am
Posts: 764
Location: Longton
Just went to check on my '75 99 which has the separate clock rather than in the rev counter, but should give a ballpark figure as I've no battery drain issues.

Total drain including the clock is only 0.002 amps, which explains why the battery still starts the car even when it's been rudely ignored for three months or more!! :oops:

At 0.12A total yours is drawing 2.88AH per day approx. so I would expect it to completely flatten your battery (assuming it is in good order) in around three to four weeks depending on battery spec..? Although less time than that before it would fail to start it.

_________________
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PostPosted: Tue Sep 15, 2020 5:58 pm 
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Full Pressure Turbo
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Joined: Thu Oct 06, 2005 10:31 pm
Posts: 718
Location: Crewe
Car Models: 78 99T,99GL LPG
Definitely doesn’t sound normal

On my 99’s I have a battery cut off switch with bypasses for the clock and the radio. I could leave my last 99T for a month-6 weeks like this and it would Still start fine.

You can pull the Power connector for the clock quite easily if you take the dash surround off (Not sure you even need to unscrew and pull the dash forward). I’d do that and then measure your current draw. Maybe you have an ancillary somewhere else doing it.


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