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CTEK & AGM Question
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JonM
 


Member Since: 24 May 2012
Location: North Yorkshire
Posts: 1239

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4
CTEK & AGM Question

I've just put the CTEK on my car for a precautionary charge and a question occurred to me.......

I've never used the recondition setting on my battery - should I?

My concern is that the CTEK instructions say that basically, the reconditioning mode boils the electrolyte to mix it. However, I have an AGM battery which, as I understand it, has the electrolyte held in glass fibre matting which makes me think that boiling it is probably a very bad thing to do?

What is the correct answer? Is using a CTEK recondition setting on an AGM battery a good or bad thing to do?
 MY2022 D5 HSE D300 - with extra nice bits added
MY2019 D5 HSE 3.0 SDV6 - sold to a dealer for a crazy price! - So good I bought another!
MY2012 D4 HSE 3.0 SDV6 - retired to a new home
 
 
Post #137345714th Nov 2014 3:55 pm
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Discotres
 


Member Since: 25 Jan 2010
Location: London
Posts: 8491

Scotland 2009 Discovery 3 TDV6 GS Manual Stornoway GreyDiscovery 3

Use the AGM mode on the charger Thumbs Up

Sorry just re read it and I guess your asking if you CAN recondition an AGM with it, sorry I don't know but there is no fail safe to stop you which you think there would be Wink
  
Post #137346014th Nov 2014 3:59 pm
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therealboss
 


Member Since: 21 Mar 2014
Location: Co Carlow
Posts: 1958

Ireland 2005 Discovery 3 TDV6 S Auto Tonga GreenDiscovery 3

If it was my battery I would not use the "Recon" mode.

Took out my old Land Rover battery, normal lead acid one and put it on "Recon Mode" for 24 hours, when I took it out the D3 it was holding something like 30Ah after Recon Mode it was knackered voltage was only 11v so ReCon Mode killed a cell.
 Dale




Mods to date.
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Post #137346314th Nov 2014 4:02 pm
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Robbie
 


Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

The latest AGM batteries charge ok with the Ctek in normal mode. I only tend to use the AGM mode on an AGM battery when it is cold. Should I ever need to use the recondition mode the battery comes out of the car and is charged somewhere safe.

Thumbs Up
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Post #137346614th Nov 2014 4:04 pm
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euangibson
 


Member Since: 24 Dec 2010
Location: Borders
Posts: 11027

Scotland 2012 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

If I remember the instructions properly,they recommend you use Recon mode very sparingly anyway....so I just miss it out altogether...
 "Better to remain silent and be thought a fool,than to speak out and remove all doubt" ?.....what rubbish...

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Post #137347514th Nov 2014 4:06 pm
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JonM
 


Member Since: 24 May 2012
Location: North Yorkshire
Posts: 1239

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

That's my instinct. I've only ever used the AGM mode.

I'm curious though because the CTEK makes the claim that you can't do any harm with it and the instructions don't say that you shouldn't use the recon mode on AGM batteries.
 MY2022 D5 HSE D300 - with extra nice bits added
MY2019 D5 HSE 3.0 SDV6 - sold to a dealer for a crazy price! - So good I bought another!
MY2012 D4 HSE 3.0 SDV6 - retired to a new home
 
 
Post #137347714th Nov 2014 4:06 pm
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Robbie
 


Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

The recon mode is a bit brutal and is only really there to have a go at an otherwise dead battery. If your battery already has an internal failure the recon mode will find it!
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
A not-for-profit enterprise


 
 
Post #137347814th Nov 2014 4:08 pm
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tayaste
 


Member Since: 15 May 2013
Location: Chester
Posts: 7633

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Has anybody got the ctek 10, and if so did you get a temperature sensor with it. I've only just noticed after 7 months that there is a small cover where a temp sensor plugs in, however I don't have one , so I either threw it out , I lost it or it didn't cone with one. Can anybody shed any light on thus for me please Thumbs Up
  
Post #139540525th Dec 2014 1:15 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72790

Ukraine 

This bit?

Click image to enlarge
  
Post #139540725th Dec 2014 1:19 pm
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JonM
 


Member Since: 24 May 2012
Location: North Yorkshire
Posts: 1239

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

Yes, mine came with a temperature sensor. The one in the photo above looks a bit home made. Mine is just a small black plastic bit on a wire. Thumbs Up
 MY2022 D5 HSE D300 - with extra nice bits added
MY2019 D5 HSE 3.0 SDV6 - sold to a dealer for a crazy price! - So good I bought another!
MY2012 D4 HSE 3.0 SDV6 - retired to a new home
 
 
Post #139540925th Dec 2014 1:25 pm
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Robbie
 


Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

Are you sure the sensor is not just hiding amongst the accessories? It's an innocuous little black thing and easy to miss.

Thumbs Up
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
A not-for-profit enterprise


 
 
Post #139542025th Dec 2014 2:08 pm
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euangibson
 


Member Since: 24 Dec 2010
Location: Borders
Posts: 11027

Scotland 2012 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

Never crossed my mind before...pretty sure I didn't get one,but now I'm going to have a good look next time I use it Confused
 "Better to remain silent and be thought a fool,than to speak out and remove all doubt" ?.....what rubbish...

Locking rear E-diff
RLD spare wheel protector & sump guard
Extended roof rails
Series 111 mudflaps
Black side tubes,grill and vents
Timed climate remote
Hids4u interior lights

D4 Firenze my2012 HSE
D3 Java 2005 SE manual (sold,sadly,thanks for the memories)
1966 '88 Series 2a....still starts in the morning better than I do... 
 
Post #139544225th Dec 2014 3:28 pm
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tayaste
 


Member Since: 15 May 2013
Location: Chester
Posts: 7633

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

I'm not sure I didn't get one no, I have a feeling I chucked it with the box and can't see any replacements online Banging Head
  
Post #139544325th Dec 2014 3:39 pm
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Dudleydisco
 


Member Since: 20 Jun 2014
Location: York
Posts: 853

United Kingdom 2014 Discovery 4 3.0 SDV6 XXV LE Auto Causeway GreyDiscovery 4

Mine came with the little back one Robbie mentioned. I always have it plugged in when charging.
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Post #139546825th Dec 2014 6:14 pm
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MarsKy
 


Member Since: 23 Dec 2011
Location: Lanarkshire
Posts: 847

Scotland 2011 Discovery 4 3.0 SDV6 HSE Auto Rimini RedDiscovery 4

It should look like this:
Click image to enlarge


Edit: Del's seems to be the one discussed here http://www.simonwyss.me/blog/?p=37
  
Post #139547525th Dec 2014 6:53 pm
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