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Running the FBH while charging
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Ade_S
 


Member Since: 19 Jul 2018
Location: Warwickshire
Posts: 90

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Siberian SilverDiscovery 4
Running the FBH while charging

Hi all,

I ca't think that this would be a problem, but is it OK to run the FBH (via my Altox) on my D4 while the battery is being charged using a CTEK 7 charger?

My journeys are often only 20-30mins or so; in this weather, with seat heaters etc on, the battery doesn't get change to fully recharge, so I like to leave it overnight from time to time with the charger attached.

Any problem with having the FBH scheduled to come on in the morning, before I've disconnected the charger?

Cheers,
Ade
 MY2012 D4 HSE in Siberian Silver, 1967 MGB  
Post #211496122nd Jan 2020 10:12 pm
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Motolab
 


Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815

Netherlands 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

No, is no problem..

But consider fitting a deep cycle battery for a more thrust worthy operation.

Deep cycle battery’s are far more resistant against low voltage /deep cycle so will last much longer if used in your conditions..
 Best regards
Harold

Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year

Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc. Wink 
 
Post #211496422nd Jan 2020 10:28 pm
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Ade_S
 


Member Since: 19 Jul 2018
Location: Warwickshire
Posts: 90

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Siberian SilverDiscovery 4

Thanks! Couldn't think of any likely problem but thought it was worth checking.

It had a new battery a year ago (Exide AGM) so not planning to swap it out yet, but I'll look into deep cycle ones next time. Hadn't heard of those before...

Cheers,
Ade
 MY2012 D4 HSE in Siberian Silver, 1967 MGB  
Post #211497322nd Jan 2020 11:02 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10335

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

i've tried it without issue.

gives the FBH more likley hood of starting (due to high voltage)
  
Post #211509123rd Jan 2020 12:18 pm
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Ade_S
 


Member Since: 19 Jul 2018
Location: Warwickshire
Posts: 90

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Siberian SilverDiscovery 4

That's why I wanted to try it. Mine often fails to start as the battery voltage is too low, even though the car itself isn't warning about it.
 MY2012 D4 HSE in Siberian Silver, 1967 MGB  
Post #211510223rd Jan 2020 12:38 pm
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Motolab
 


Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815

Netherlands 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Keep in mind that you discard a safety feature, especially if you run de blowers (full parking heater function)
The webasto is designed to never start up, if your starting capacity can become in danger... if although it is running and the blowers are also running (different control circuit/not controlled by the webasto) is goes on, till the power is far to low for starting...or a healthy battery (everything below 12v is deep cycle and shortens the life of a battery very very much)

I doubt if a charger is fast enough to overcome that problem, I think the draining with blowers on, is faster than the charging, but that is beyond my electronics calculating expertise Wink
 Best regards
Harold

Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year

Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc. Wink 
 
Post #211511023rd Jan 2020 12:54 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10335

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

if the car has been on charge all night, there shouldn't be any problems.
  
Post #211516723rd Jan 2020 5:19 pm
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Motolab
 


Member Since: 18 Oct 2019
Location: Sleen
Posts: 1815

Netherlands 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

True, but nights can be short Wink

And then the “measuring” sequence is fooled, just wanted to be known...
 Best regards
Harold

Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year

Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc. Wink 
 
Post #211517323rd Jan 2020 6:01 pm
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James W
 


Member Since: 27 Mar 2008
Location: Wirral, UK
Posts: 3056

United Kingdom 

Never had any problems here using charger via the towing electrics
 D4 XS, gone, much loved, never forgotten
2018 FFRR SDV8 Autobiography - WTF does this button do 
 
Post #211517423rd Jan 2020 6:02 pm
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Brian_DL13
 


Member Since: 25 Aug 2013
Location: Teesdale
Posts: 1418

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

I've found (MY14 HSE) that if the battery is low what can happen is the FBH will start and run for it's allotted 20 minutes, but by the end of that the battery is completely jiggered and won't start the car. So if I have any doubts about the state of charge I don't use the FBH.
  
Post #211517823rd Jan 2020 6:18 pm
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