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Stop Start Battery
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crooks_uk
 


Member Since: 04 Jul 2017
Location: Newcastle-upon-Tyne
Posts: 42
Stop Start Battery

I suspect that my stop start battery needs replacing as the eco light is illuminated. Don't really have much use for stop start as most of my driving is motorway with very little traffic but was wondering if the battery increases ah capacity (like in a Toyota with twin batteries) and would be of benefit in winter or only serves the purpose of running ancillaries during the stop start cycle. Is it worth replacing to reduce drain on the main battery when running the FBH, interior lights etc or is it strictly limited to operation during the stop start cycle?  
Post #22553494th Oct 2021 9:46 pm
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LT
 


Member Since: 31 Dec 2005
Location: South West
Posts: 23832

United Kingdom 2016 Discovery 4 3.0 TDV6 Landmark LE Auto Santorini BlackDiscovery 4

I don’t think that it does supplement the main battery, which is the same output as the battery on a D4 without start/stop but still has a FBH etc. etc.

I can’t say that is definitely correct though. Thumbs Up 2006 D3 HSE (Original & still the best)-GONE
2010 D4 HSE (A bit bling)-GONE
2014 D4 HSE (Almost too bling)-GONE
2015 D4 HSE (A heated what?)-GONE
2016 D4 Landmark (Written Off)-GONE
2016 D4 Landmark (Surely the last!) PD1881 rims-GONE
2017 FFRR SDV8 Autobiography (now semi-retired)  
Post #22553524th Oct 2021 9:59 pm
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galwaygreen
 


Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525

United Kingdom 2016 Discovery 4 3.0 TDV6 Graphite LE Auto Loire BlueDiscovery 4

both our batteries failed to the day 5 years after we drove out the dealers...not bothered to replace S/S battery..and 15 moths on no probs...the eco light is on but it was if i turned off S/S in the early days...S/S a load of nonsence IMHO  
Post #22553714th Oct 2021 11:37 pm
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crooks_uk
 


Member Since: 04 Jul 2017
Location: Newcastle-upon-Tyne
Posts: 42

Would a faulty stop start battery drain the main battery?  
Post #22554935th Oct 2021 3:27 pm
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s60r
 


Member Since: 14 Mar 2021
Location: West Sussex
Posts: 287

United Kingdom 2014 Discovery 4 3.0 SDV6 Commercial XS Auto Santorini BlackDiscovery 4

no - as it would not do the 'stop' part of the stop/start so it wouldn't therefor need the start part either as it hadn't stopped. Laughing


I replaced both and had to rest the BCM (battery control module) in order to get the stop start to work again. The previous owner hadn't replaced either for the first 6 years of its life so they were both overdue. A mod a week until I have nothing to improve or add.  
Post #22555085th Oct 2021 5:44 pm
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