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Wales
by Joske Vermeule, September 1
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Forums39
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Jun 14th, 2026
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Joined: Sep 2006
Posts: 638
Talk Morgan Regular
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OP
Talk Morgan Regular
Joined: Sep 2006
Posts: 638 |
I think my Aero battery is slowly giving up so I want to replace it with a heavier duty one, the current one is 58AH and 450A.
Can anyone recommend a good quality battery that will fit but of a higher capacity the the current one?
Michael
Michael
Aero 8 S4
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Joined: Feb 2012
Posts: 5,657 Likes: 4
Charter Member
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Charter Member
Joined: Feb 2012
Posts: 5,657 Likes: 4 |
Why not replace it like for like?
Martin (Deano)
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Joined: Sep 2006
Posts: 638
Talk Morgan Regular
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OP
Talk Morgan Regular
Joined: Sep 2006
Posts: 638 |
Why not replace it like for like? I am hoping to get a battery that will last longer when stood idle
Michael
Aero 8 S4
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Joined: Apr 2014
Posts: 3,550 Likes: 5
Talk Morgan Addict
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Talk Morgan Addict
Joined: Apr 2014
Posts: 3,550 Likes: 5 |
Battery ideally should be matched to the alternator.
Turning off the current vampyre in the MORGAN odd electrics will make the battery last longer when idle.
Mark - No Longer driving Archie the Old English Sheep Mog........... 2010 Roadster 3.0 V6 (S3) 
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Joined: Feb 2009
Posts: 378
Learner Plates Off!
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Learner Plates Off!
Joined: Feb 2009
Posts: 378 |
Hi Michael, I had the same problem with the battery only lasting a couple of years but after isolating the car - which I believe Mark is referring to -if I know I wont be using it for at least another week the battery has now lasted over 5 years. I don't know if you are familiar with the isolator and I am struggling to upload a photo !!
T
15 Weissman GT5
11 Aero8 SS
21 Q7
23 RR
24 Def'r 130
1960 XK150 DHC
1970 E-type
2024 Huracan Tech
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Joined: Aug 2014
Posts: 5,587
Charter Member
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Charter Member
Joined: Aug 2014
Posts: 5,587 |
Why not replace it like for like? I am hoping to get a battery that will last longer when stood idle You don't have a switch inside the bonnet on the engine to switch off the electrics as in the 4.8 Aero engine ?
Geneva 2016 plus 8' The Green Godess' 4 side exits .
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Joined: Mar 2016
Posts: 844
Talk Morgan Regular
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Talk Morgan Regular
Joined: Mar 2016
Posts: 844 |
I always leave mine plugged into a battery conditioner unless I'm going to be driving it the next day
Simon
Series 1 Aero 8
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Joined: Sep 2006
Posts: 638
Talk Morgan Regular
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OP
Talk Morgan Regular
Joined: Sep 2006
Posts: 638 |
I do have a red isolator switch on my S4 in the engine bay but I don't want to use that as I then have to reset windows when powered back on, I keep all my cars on a ctek but my battery drains quite quickly if not used and I am planing trips where we won't have access to charging and in the autumn stood in hotel car parks may test the battery.
My thinking is not the overall life of the battery but how long it takes to drain it and so a heavier duty battery seems one possible solution.
Michael
Michael
Aero 8 S4
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Joined: Aug 2013
Posts: 15,794 Likes: 15
Formerly known as Aldermog Member of the Inner Circle
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Formerly known as Aldermog Member of the Inner Circle
Joined: Aug 2013
Posts: 15,794 Likes: 15 |
The battery in Tarka is from mid 2013, according to the sticker. It will last for about 2 weeks without the trickle charger, but if the radio is left on the battery goes flat over night.
How do I know this, yes, I found out the hard way.....
As has been said, a larger battery, if beyond the capacity of the alternator, won't help.
A trickle charger is the cheapest solution, I feel.
Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...
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Joined: May 2007
Posts: 849 Likes: 2
TM Photographer of 2008 Talk Morgan Regular
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TM Photographer of 2008 Talk Morgan Regular
Joined: May 2007
Posts: 849 Likes: 2 |
For back-up whilst travelling get one of these or similar.
Ken
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