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Second battery - questions!
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bensla
 


Member Since: 02 May 2023
Location: Trowbridge
Posts: 141

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3
Second battery - questions!

Just learned about the space for a second battery. Did any of them come with this as a purchase option? If so what kind of circuits was it hooked up to? Was it just used for the fridge?

If I wanted to fit one to mine what are the uses for it, do people just add their own kit directly to them or is there any clever way of hooking it up to run the stereo etc when parked?

This brings me onto my next question - if I was sat in the car for a while with the ignition turned off/key removed - will it still flatten the normal battery? Will it still go to sleep if it's not locked?

Thanks
Ben 

Last edited by bensla on 6th Jul 2023 4:21 pm. Edited 1 time in total 
Post #23414046th Jul 2023 3:11 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73079

Ukraine 

As long as the 2nd battery is connected to the crank battery via a relay or equiv then when ign = off then you’ll only run down the 2nd batt. If it’s connected directly things will work it you risk draining both and getting the dreaded click when you go to start the engine.

Nothing ever came with a 2nd bat from new, all fitted after and lots of ways to do it. Fitted 2nd batts to D3 and D4, deffo worthwhile for the off-roading and camping jollies I used to do. And a 2nd battery does so much more than keeping the beers cold. Thumbs Up   
Post #23414076th Jul 2023 3:49 pm
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SpiderBaby
D3 Decade 


Member Since: 21 Sep 2007
Location: Liverpool
Posts: 1411

England 2005 Discovery 3 TDV6 SE Auto Zermatt SilverDiscovery 3

With regards an auxiliary battery I fitted one about 15 years back

I've fitted a marine grade fuse board and use the battery to power:

Rear mounted light
Fridge in boot
Air compressor in boot
Auxiliary power socket in boot
Marine grade auxiliary power socket under bonnet for work lights etc

And on occasion used it to jump start myself when the main battery was fading I see no ships........  
Post #23414086th Jul 2023 3:53 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73079

Ukraine 

Ah the happy days of living out of the D3 when in the Arras end of nowhere with all the essentials sorted, cold beer and all the tech charged. Thumbs Up

Calls for a great memory pics from Engeloya Island. Mr. Green

Click image to enlarge


Click image to enlarge


Still miss the old girl! Big Cry Big Cry Big Cry   
Post #23414096th Jul 2023 4:16 pm
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bensla
 


Member Since: 02 May 2023
Location: Trowbridge
Posts: 141

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Great pics!  
Post #23414106th Jul 2023 4:26 pm
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LT
 


Member Since: 31 Dec 2005
Location: South West
Posts: 23823

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

DSL wrote:
Ah the happy days of living out of the D3 when in the Arras end of nowhere with all the essentials sorted, cold beer and all the tech charged. Thumbs Up

Calls for a great memory pics from Engeloya Island. Mr. Green

Click image to enlarge


Click image to enlarge


Still miss the old girl! Big Cry Big Cry Big Cry


Thumbs Up

The good old days of Pirelli ATR's. I miss those. Sad 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 #23414156th Jul 2023 5:12 pm
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Moo
D3 Decade 


Member Since: 13 Aug 2010
Location: UK
Posts: 14385

Ukraine 2005 Discovery 3 TDV6 S Manual Zambezi SilverDiscovery 3

I fitted a T-Max unit with the battery monitor and battery link facility. Les than £100.

Used it extensively to peer the a Waeco fridge freezer and an inverter via an Odyssey battery. Brilliant and faultless. Thumbs Up New Defender L663 110 SE (known as Noddy!)

Sold Volvo XC90 R-Design (known as Basil)

Sold - D4 HSE (Known as Gerty)

No longer the Old Buses original owner Sad
231,000 miles and counting
05 S manual owned from March 2005
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control  
Post #23414186th Jul 2023 5:31 pm
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