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Low Battery Warning - Please start vehicle
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BruceT
 


Member Since: 22 Oct 2013
Location: Johannesburg
Posts: 100

South Africa 2013 Discovery 4 3.0 TDV6 SE Auto Alaska WhiteDiscovery 4
Low Battery Warning - Please start vehicle

Hi All,

I am getting this warning on my dash. Its obvious what it means but I only get this when connected to the battery charger or when i disconnect the battery charger.

I have tested the battery and its fine.

If I drive the vehicle for a few kms and then park it for a day or 3 I do not get the message until I plug in the charger again.
The charger is a CTEK MXS 5.0 eight stage charger, 12V 5A

Any ideas?

Thank you  
Post #170666416th Sep 2016 6:57 am
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dgardel
 


Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025

Italy 2014 Discovery 4 3.0 SDV6 XXV LE Auto Santorini BlackDiscovery 4

Do you connect the charger:

-Ve to the chassis (not to the negative pole of the battery)
+Ve to the positive pole of the battery

? Discovery 5 tdv6 HSE Corris Gray Outback Engineering Limited Edition

IID Pro MV License

  
Post #170668616th Sep 2016 8:15 am
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BruceT
 


Member Since: 22 Oct 2013
Location: Johannesburg
Posts: 100

South Africa 2013 Discovery 4 3.0 TDV6 SE Auto Alaska WhiteDiscovery 4

Charger is connected to + and - of the battery  
Post #170669216th Sep 2016 8:25 am
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sputnixb51
 


Member Since: 23 Apr 2013
Location: Morayshire
Posts: 833

Scotland 2014 Discovery 4 3.0 SDV6 SE Tech Auto Corris GreyDiscovery 4

Hi use dgardels method always use a chassis earth as negative battery Positive Thumbs Up  
Post #170669716th Sep 2016 8:35 am
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Dudleydisco
 


Member Since: 20 Jun 2014
Location: York
Posts: 853

United Kingdom 2014 Discovery 4 3.0 SDV6 XXV LE Auto Causeway GreyDiscovery 4

If you use the -ve terminal of the battery rather than a chassis ground, then the BMS doesn't register the charge you're putting onto the battery. This can give you all sorts of problems Thumbs Up D4 MY14 XXV - RLD/IID BT
D4 MY13 HSE Lux - RLD/IID BT
P38 RR - Sad parting
110 - Even sadder parting
S3 88" - Still going strong after 23 years of ownership Smile

  
Post #170672016th Sep 2016 9:06 am
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dgardel
 


Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025

Italy 2014 Discovery 4 3.0 SDV6 XXV LE Auto Santorini BlackDiscovery 4

Yes correct, the charger/maintainer connected directly mislead the BMS; your battery is fully charged but the BMS still "think" that the battery charge is always as before, unchanged. Discovery 5 tdv6 HSE Corris Gray Outback Engineering Limited Edition

IID Pro MV License

  
Post #170672616th Sep 2016 9:14 am
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BruceT
 


Member Since: 22 Oct 2013
Location: Johannesburg
Posts: 100

South Africa 2013 Discovery 4 3.0 TDV6 SE Auto Alaska WhiteDiscovery 4

Excellent. Thank you all very much for the advice. I will try that.  
Post #170673116th Sep 2016 9:17 am
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