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![]() | Home > General > Low battery warning on radio display |
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Browny90 Member Since: 02 Nov 2015 Location: Derbyshire Posts: 153 ![]() ![]() ![]() |
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Bill Turner Member Since: 08 Jul 2008 Location: Birkenhead Posts: 977 ![]() ![]() ![]() |
My 09 SE is on the original battery and it is still performing well.
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AjM Member Since: 09 Sep 2014 Location: South Devon Posts: 124 ![]() ![]() ![]() |
Carrying on this thread...
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4921 ![]() ![]() ![]() |
If you are not going to replace the battery, consider a pair of jumper leads with 200 amp copper bronze clamps.
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dorsetfreelander Member Since: 20 Jul 2013 Location: Dorset Posts: 4354 ![]() ![]() ![]() |
Whilst I would generally agree with you I have had two instances in my working life when batteries have failed completely with little or no warning. Batteries do seem to last a lot longer now but the only thing I would do is 1. charge it up and disconnect the battery overnight and see if the battery voltage drops. or 2. disconnect and use an ammeter to check quiescent current flow when everything is switched off. Perhaps something is drawing excess residual current and running your battery down. 3 x FL1 2 manual + 1 auto 5 x FL2 4 manual + 1 auto Now Discovery Sport P250 MHEV SE |
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AjM Member Since: 09 Sep 2014 Location: South Devon Posts: 124 ![]() ![]() ![]() |
I have put a new battery in and all is well. But just to be sure, how do I do the residual current check? |
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dorsetfreelander Member Since: 20 Jul 2013 Location: Dorset Posts: 4354 ![]() ![]() ![]() |
You will need a multimeter. Remove the positive battery terminal and connect it to the red probe/terminal of the multimeter, connect the black multimeter terminal to the battery positive. See how much current is flowing after the initial surge as capacitors charge up. You might expect a small flow of (I am guessing) a few tens of milliamps to run the alarm system and clock etc but if more than say 1 amp then the battery will slowly discharge. Remember that a 75 ampere hour battery will discharge in 75 hours if delivering one amp and so forth. Does anyone out there know the quiescent current on an FL2? 3 x FL1 2 manual + 1 auto
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EYorkshire Member Since: 18 Nov 2010 Location: (!) Posts: 4392 ![]() |
Freelander 2 - From 2007MY Shutdown period 35 minutes (single locked or unlocked) then <23.6 mA battery drain. Shutdown period 12 minutes (double locked) then <23.6 mA battery drain. |
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AjM Member Since: 09 Sep 2014 Location: South Devon Posts: 124 ![]() ![]() ![]() |
Ok, not sure what I am doing wrong here but I need help.
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AjM Member Since: 09 Sep 2014 Location: South Devon Posts: 124 ![]() ![]() ![]() |
Now it is still sparking but showing 0.00, if I leave the probes on it sparks ever few seconds with no discernible pattern. |
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dorsetfreelander Member Since: 20 Jul 2013 Location: Dorset Posts: 4354 ![]() ![]() ![]() |
Measured through the positive or earth terminal shouldn't make any difference - basic physics. However, this is one of those situations where I prefer an old analogue meter so that you can see what's going on. Digital meters only sample every second or so and if you have something pulsing you will get strange readings. If you are indeed getting short bursts of current every few seconds you will have to start taking fuses out to isolate it. Apart from the alarm system scanning something or a pump coming on and off I can't think what it would be. 3 x FL1 2 manual + 1 auto
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AjM Member Since: 09 Sep 2014 Location: South Devon Posts: 124 ![]() ![]() ![]() |
Seems it was my bad the connection was not good enough. Got it on now and all the lights etc have gone off but still drawing 1.19amps. Do I have to wait for the 35mins to pass for it to drop to less then 0.05? |
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dorsetfreelander Member Since: 20 Jul 2013 Location: Dorset Posts: 4354 ![]() ![]() ![]() |
Why not just leave it for an hour or two and see what happens. I suppose you have checked things like glove box lights , wound all windows up and down (windows stop when module detects increased current from stalled motor etc) Next step is removing fuses and try to isolate the cause. 3 x FL1 2 manual + 1 auto
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AjM Member Since: 09 Sep 2014 Location: South Devon Posts: 124 ![]() ![]() ![]() |
All sorted, it dropped to 0.08 then 0.06 and then after another couple of mins 0.02 and then 0.00.
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