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AGM or Wet Cell Battery
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Plattlane
 


Member Since: 10 Aug 2016
Location: Hyde, Cheshire
Posts: 8

United Kingdom 2007 Discovery 3 TDV6 XS Manual Java BlackDiscovery 3
AGM or Wet Cell Battery

My 2007 D3 needs the battery replacing. I know the favoured replacement is the Exide from Tayna, but I have an Altox WBUS-5 GPS FBH controller fitted. I mostly do short local runs, so was considering fitting an AGM battery, as the car won't have a lot of time to re-charge. Will an AGM battery work with the D3 electronics and alternator?
  
Post #198395916th Sep 2018 11:11 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8043

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

It will with a shorter life as the D3 charges at a higher voltage than the AGM can cope with particularly in cold weather, you are better sticking with the wet cell and using the money saved to buy a Ctek charger and tow bar connector and use it once a week Thumbs Up
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Post #198398417th Sep 2018 7:34 am
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Madrilleno
 


Member Since: 13 Oct 2014
Location: Nottingham
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England 2012 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

What he said

Also, more discussion.

https://www.disco4.com/forum/battery-techn...hlight=AGM
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Post #198398717th Sep 2018 7:39 am
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Bodsy
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Member Since: 06 Nov 2006
Location: In the Clubhouse
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United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

There’s nothing wrong with an agm battery in a d3/4.
Going against the previous comments, they are very good at handling the charging voltage and as you say, will charge up quicker than a wet cell.
D4’s come with AGM as standard for that very reason...

I would be happy to put an AGM in my D3. In fact my aux battery was AGM and managed very well.
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Post #198399417th Sep 2018 8:09 am
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Ceekay
 


Member Since: 17 May 2009
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United Kingdom 2016 Discovery 4 3.0 SDV6 HSE Lux Auto Waitomo GreyDiscovery 4

Just for your information I have had an AGM LR battery in my D3 for several years and I do little mileage and all has been well, although I do charge both my AGM and aux batt every few weeks with the c-tek.

Not sure how it would be if i was charging it off the alternator for hundreds of miles per wk though year in year out Thumbs Up
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Post #198400717th Sep 2018 9:29 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
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England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Have a read of this, Who am I to argue Whistle - your call!

https://www.disco3.co.uk/forum/battery-advice-please-130997.html
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #198400917th Sep 2018 9:43 am
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Bodsy
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Member Since: 06 Nov 2006
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United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Well, they’re both strong differing opinions on that thread and I’m not sure what the final outcome is, so essentially, none the wiser either way.

My AGM battery lasted 6 years, with constant long drives charging it throughout the year and temperatures.
Personally I would have no problem putting an AGM battery on my D3. Indeed, my current wet battery installed in January 2016 is failing to hold charge more than a couple of days. Seems to me that both view are right and both views are wrong Laughing
But my view is right for me Thumbs Up
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Post #198402617th Sep 2018 11:21 am
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LT
 


Member Since: 31 Dec 2005
Location: South West
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United Kingdom 2016 Discovery 4 3.0 TDV6 Landmark LE Auto Santorini BlackDiscovery 4

I haven’t read the links, but personal experience of replacing the original battery in my 2006 D3 with an AGM was a positive one.
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Post #198407017th Sep 2018 2:14 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
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England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

As the saying goes “the proof of the pudding is in the eating” Bow down , slightly off topic, approximately two years ago I fitted a Discovery AGM battery to a 30 year old 85hp tractor in place of the recommended wet cell battery, the tractor (Case 885XL) is used for perhaps 1 hour a week in winter for loading duties, since fitting the battery it has never failed to start and has only been charged once as a precautionary top up, with the same size good wet cell battery it needed charging every two weeks to guarantee the tractor starting, although I doubt the old tractor alternator charges at the high rate as a good Disco alternator.

A little interesting reading on the subject:
https://batteryuniversity.com/learn/articl...ss_mat_agm


 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #198409417th Sep 2018 3:28 pm
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Plattlane
 


Member Since: 10 Aug 2016
Location: Hyde, Cheshire
Posts: 8

United Kingdom 2007 Discovery 3 TDV6 XS Manual Java BlackDiscovery 3

Thanks for all your replies chaps. The more threads I read the more confused I get, until I am totally confused. I have decided to stick with standard spec. My Tayna Exide battery arrived today and I checked the voltage at 12.56V. So on slow charge from 14:00 yesterday.
  
Post #198458418th Sep 2018 11:15 pm
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Myles Tagoyet
 


Member Since: 30 Oct 2017
Location: Carmarthenshire
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Scotland 2007 Discovery 3 TDV6 HSE Auto Indus SilverDiscovery 3
"Genuine" LR Battery

I rang my local garage this morning to arrange for a new battery to be fitted as mine is failing. The really helpful chap informed me I needed to fit a "genuine LR" one owing to the complicated electrical system - all for £271.58p

Quoting Robbie, I replied "LR don't make batteries" adding "why would I pay an extra £100 for a LR sticker"

The line went dead!

now trying to find someone local to fit the Robbie et al recommended Exide
 

Last edited by Myles Tagoyet on 27th Sep 2018 8:45 am. Edited 1 time in total 
Post #198663226th Sep 2018 10:05 am
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Globetrotter448
 


Member Since: 21 Mar 2017
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Australia 2007 Discovery 3 4.0 V6 Petrol SE Auto Java BlackDiscovery 3

I seem to have read somewhere that LR has changed to AGM for its newer vehicles so that should do for the older ones
  
Post #198693427th Sep 2018 8:41 am
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Aussie Jeepster
 


Member Since: 12 Apr 2017
Location: Adelaide, South Australia
Posts: 10

Australia 

I have an AGM in my 2006 D3 petrol, which is over 6 years old.
It gets driven, on average, once a week for 40km.
And the battery is still going strong.
Mind you, I do plug in a solar panel when it is sitting at home in the carport.
  
Post #198725028th Sep 2018 12:24 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
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England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Perfect for your environment, no long journeys, charge topped up and no cold weather to push the charging current above the critical limit for an AGM, just don’t go on a long journey out into the bush or you may be in serious trouble Whistle
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #198725128th Sep 2018 4:49 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8043

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Globetrotter448 wrote:
I seem to have read somewhere that LR has changed to AGM for its newer vehicles so that should do for the older ones


The charging current has also been reduced on “newer” vehicles to meet the maximum required AGM charging rate Thumbs Up
The point being anyone who fits an AGM battery to a D3 is wasting money, better to fit a wet cell battery and use the “wasted” money on a good battery charger.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #198725228th Sep 2018 4:55 am
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