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Talk Morgan Guru
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Originally Posted By DaveW
Today after the charge it showed 13.10 Volts.......


Yes that would be surface charge, whereby the chemical composition that dictates a fully charged battery had not or could not be absorbed into the thickness of the plates. Think of it as a form of super charging.

It will leave the electrolyte closer to pure acid though which over time will errode the plates. That's why smart chargers drop to a float charge voltage when near full charge is sensed. Some ECU driven alternators with remote regulation offer this as well.

Putting the headlights on for a minute will quickly remove the surface charge.


Richard

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DaveW Offline OP
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It's a modern CTEK conditioner Richard. I don't leave it permanently connected, I let the battery cycle down a few days and then top it up overnight. My Roadster battery had managed 13 years when I replaced it last year.


DaveW
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Talk Morgan Sage
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Originally Posted By DaveW
It's a modern CTEK conditioner Richard. I don't leave it permanently connected, I let the battery cycle down a few days and then top it up overnight. My Roadster battery had managed 13 years when I replaced it last year.

I thought CTEK ran down the battery itself and then recharged it?


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Lang may yer lum reek
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DaveW Offline OP
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It has multiple features Bob.
That's one option I think.
The only thing it can't do is make tea.


DaveW
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Talk Morgan Sage
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Originally Posted By DaveW
It has multiple features Bob.
That's one option I think.
The only thing it can't do is make tea.

Waste of space, then. smile


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DaveW Offline OP
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Not really, I have a tea maker in the house..........


DaveW
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Originally Posted By DaveW
Not really, I have a tea maker in the house..........


Mrs W ? redcard


Keith
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DaveW Offline OP
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Correct.....


DaveW
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M
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Oooh John and Dave, My 2010 Roadster immobiliser lamp flashed whether the key is in or out. At least it goes out when the key is turned. Ah I just saw your bit about your Roadster Dave so all is well.

Last edited by meabh; 06/01/19 04:05 PM.
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Talk Morgan Guru
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Hi Dave, just explaining why you saw the unusually high off load battery voltage shortly after charging. It would have bled down to 12.7 volts over time anyway.


Richard

2018 Roadster 3.7
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