Member Since: 24 Jun 2006
Location: Different Planet
Posts: 206
Is an AGM battery essential on a 10 plate D4?
Hi.
Have been looking at a new battery for my 10 plate D4 and am being advised that only an AGM battery will be good enough.
Something to do with Phone & Sat Nav type electronics?
Know of someone recently having a non AGM type fitted to a Range Rover and the Phone and Sat Nav has played up since.
Is it just a coincidence or does an AGM really matter?
Cheers.
Griffmaster.2015 D4 HSE in Corris Grey
All below gone but still with happy memories
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17th Jan 2014 3:22 pm
chopcat
Member Since: 08 Apr 2013
Location: Pembrokeshire
Posts: 481
the MY10 were made for Calcium I believe although now are all AGM so it is easier to get an AGM replacement which is what i have done on my 10 plate.
I have been advised the there is no reason not to.
CCmay the odds be ever in your favor
17th Jan 2014 3:42 pm
stick
Member Since: 13 Jan 2010
Location: hants
Posts: 604
I put an AGM on.
I didn't tell the car that I had changed it, someone has asked on a thread this morning if you should. Anyone know how?d4 HSE
17th Jan 2014 5:02 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73082
I was going to say politely!!
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17th Jan 2014 5:19 pm
stick
Member Since: 13 Jan 2010
Location: hants
Posts: 604
...still a genuine question tho'd4 HSE
17th Jan 2014 5:27 pm
chopcat
Member Since: 08 Apr 2013
Location: Pembrokeshire
Posts: 481
twas not mentioned when I went to JFLR last week and showed them my AGM
CCmay the odds be ever in your favor
17th Jan 2014 5:35 pm
farmerboy
Member Since: 09 Dec 2013
Location: warrington
Posts: 303
Bemused!!!
Surely electricity is electricity and as long as the voltage and amps are in the correct range then you will be alright? Or am I missing something 2007 Base D3 - Buckingham Blue
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17th Jan 2014 5:45 pm
Bodsy Site Sponsor
Member Since: 06 Nov 2006
Location: In the Clubhouse
Posts: 21361
Griff master, the AGM batteries tend to charge faster, they will also tolerate running down voltage better than the calcium ones.
You could probably get away with a std type of battery, but if you start getting strange errors, that's where I'd be looking first. Bodsys Brake Bible
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17th Jan 2014 6:06 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Yep agree with the above and with the later versions of the BMS on a D4 a decent AGM battery is pretty much essential.
AGMs work differently, as does the charging system on a D4; it bears no comparison to the D3. You are supposed to reset the BMS on installation of a new battery but the criticality of this appears to vary depending on the BMS version. Of course, some members have found getting any combination of battery and BMS to play nicely to be quite a challenge. The later D4s seem to be sorted though and my MY13 has been perfect which presumably gave them the confidence to go the whole hog and enable stop-start on MY14.
Thankfully the price of AGMs have come down whilst their capacity and ease of charging have increased. The are more difficult to test though and I would not use a traditional load tester on them.
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is the one i have
CCmay the odds be ever in your favor
20th Jan 2014 5:29 pm
CUCO
Member Since: 26 May 2011
Location: Spain & Oleee!!!
Posts: 609
Maybe is more a matter of software, mines was playing when new, but, as several new software version were flashed, and a faulty from new batt were changed too (because a bad batch, Q093 checked and changed it), never a single problem since.
And is a calcium type. Original LR branded one.
Still running happy and pulling strong.
Is funny to see the variation of voltage as you press the accelerator or braking or coasting in the hidden screen of sat nav, it educates you on eco-driving when you want to do "hypermiling". One note: the charging voltage is higher in cold weather and lower in high temps. So noticeable and so good for battery health to prolong its life.
21st Jan 2014 9:39 pm
armalites
Member Since: 17 Aug 2013
Location: Herefordshire
Posts: 1918
I've got one of these in my D3, 5 year warranty £137 delivered
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