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[Found] Twin battery charging system
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Trucks
 


Member Since: 30 Nov 2019
Location: south newton
Posts: 375

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Tonga GreenDiscovery 3
[Wanted] Twin battery charging system

Looking too add a second battery to my D3 so any useful bit's and bobs to help would be appreciated.
I can arrange a courier to collect but will need the weight and size or obviously you can send it and charge me the costs.
Thanks
Pete pete truckle  
Post #221659810th Mar 2021 1:16 pm
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KevinD3
 


Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1277

England 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Hi Trucks,
Pretty cheap on eBay, they come as full kits also, I’m just in the middle of fitting this one but plenty to choose from
https://www.ebay.co.uk/itm/2m-Ready-Made-S...890.l49292 2008 HSE Stornoway Grey

My Wife thinks the D3 is a hobby, The D3 thinks the wife is 💕  
Post #221660110th Mar 2021 1:30 pm
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Trucks
 


Member Since: 30 Nov 2019
Location: south newton
Posts: 375

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Tonga GreenDiscovery 3

That was quick and thank you,looks simple enough to do and have read loads on here and there are some certainly flashy kits and extras they have fitted.
Are you fitting a battery monitor for viewing on the dash somewhere.
Regards
Pete pete truckle  
Post #221661210th Mar 2021 1:45 pm
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KevinD3
 


Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1277

England 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Im fitting a duel voltage display on the dash and another in the boot, I’m documenting everything in another post
https://disco3.co.uk/forum/electrical-mods-progress-194043.html

Was pretty simple to fit on its own and the 2m kit was a perfect fit 2008 HSE Stornoway Grey

My Wife thinks the D3 is a hobby, The D3 thinks the wife is 💕  
Post #221661310th Mar 2021 1:48 pm
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Motolab
 


Member Since: 18 Oct 2019
Location: Sleen
Posts: 1820

Netherlands 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

if you use 2 starter battery's this design will work

if one is a leisure battery, and it should be, regarding the needs/use it will work but not to a full potential, even destroy a leisure battery early...

only an DC--> DC charger will do the job proper 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 #221661410th Mar 2021 1:57 pm
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Trucks
 


Member Since: 30 Nov 2019
Location: south newton
Posts: 375

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Tonga GreenDiscovery 3

Thank you
I did read about twin starter battery system but I do not want this system ,I read that as you said the other battery would be used as a leisure battery for interior lights and cigarette plug in devices so as not to drain the main battery when the ignition is off.
I also read about the twin charging system will automatically decides when to charge the batteries and switch over automatically to the leisure battery when ignition gets turned off.
The more I read the more it seems to get me confused on the items I need .
The most basic system with the operating areas as mentioned above would be the way forward for me,hence asking on the forum hoping someone might have a redundant system somewhere.
Thanks
Pete pete truckle  
Post #221662310th Mar 2021 2:37 pm
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Motolab
 


Member Since: 18 Oct 2019
Location: Sleen
Posts: 1820

Netherlands 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

i try to make it simple

starter battery's are designed to give a quick extreme OEMPH of power in a very short time. (starting).. when they do, they need to be charged very soon after the drainage, otherwise the will be sulfated
and are a buffer, when the engine is running at idle, to keep the lights on and the the engine on..

nothing more...

leuisure or auxillary batterys are designed for steady power drain for longer periods and are more deep cycle resistant... (contain more lead) so more expensive

there fore they need different charging curves....

the simple systems incl t-max etc... measure at the starter battery to decide if "they"are full...

but "full" is different for a starter vs a auxillary battery, there for you need a DC->DC charger who charges both a they need.... 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 #221663610th Mar 2021 3:23 pm
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Motolab
 


Member Since: 18 Oct 2019
Location: Sleen
Posts: 1820

Netherlands 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

is quy explains it in clear englisch 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 #221663810th Mar 2021 3:32 pm
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Trucks
 


Member Since: 30 Nov 2019
Location: south newton
Posts: 375

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Tonga GreenDiscovery 3

Thanks for the link and the advice all taken on board.
I will keep you up to date when I decide to buy something.
Seems the best purchase would be a canoe at the moment with this weather.
Thanks
Pete pete truckle  
Post #221664610th Mar 2021 4:08 pm
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will.i.am
 


Member Since: 05 May 2016
Location: hertfordshire
Posts: 250

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Keswick GreenDiscovery 3

I've got a full setup system i brought 2 weeks ago and havn't had time to install it, now am moving house and wont have time for another few weeks - T max duel charge setup and a varta second battery - biggest i could fit.

I went for T max as you get on the fly info on your batterys and charging status and can auto link them. you never know what is happening with systems without an incab display.

Would let it go for the cost to me and i would knock off your delivery cost.  
Post #221664710th Mar 2021 4:14 pm
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Trucks
 


Member Since: 30 Nov 2019
Location: south newton
Posts: 375

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Tonga GreenDiscovery 3

Watched video it was very informative and he is a very knowledgeably chap.
Somewhat frustrated at peoples misunderstanding of the charging requirements of twin battery system's ,also wherever he is explaining things in some African or other desert area,it would be the last place i would want to have battery problems.
Thanks
Pete pete truckle  
Post #221665410th Mar 2021 4:42 pm
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