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Sold
by simon8201 - 09/09/26 01:46 PM
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Wales
by Joske Vermeule, September 1
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Jun 14th, 2026
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I think the battery is on the way out, the volt meter now shows c 11.5 V when running & starting from warm is sluggish. It is I guess the original so 10 years old.
Any advice what to buy? Red top Optima's seems 3 times the going rate, are they worth it.
JohnV6
2022 CX Plus Four
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Learner Plates Off!
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Learner Plates Off!
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There have been a number of posts recently on replacement batteries. A quick search should reveal all. My 2 penneth for what its worth is Odyssey.
peter
"Hasta la victoria siempre"
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Peter their site says there is no match in their product range
JohnV6
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Learner Plates Off!
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Learner Plates Off!
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I now only buy Varta batteries
John
2014 +4, Le Mans Blue / Magnolia
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Has a lot to Say!
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Has a lot to Say!
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When running the alternator should be giving 13-14 volts regardless of the condition of the battery. If it is faulty your battery may not be fully charging. The battery standing battery voltage should be about 12.5 volts and should not drop below 10 volts when the starter is cranked. Try charging the battery up with a charger and see how it performs.
John
Silver 2005 S1 Roadster V6 - Henrietta
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Salty Sea Dog Member of the Inner Circle
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John,
I'd have brought a test meter with me today had I known. I'd recommend checking directly at the battery - engine off and running. The fitted dash voltmeter can give erroneous readings as the take off point is not close to battery/alternator.
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly
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Talk Morgan Enthusiast
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Sounds like battery maybe OK. I would try charging the battery first.
Button
Seattle
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The battery shows 12.9v across the terminals after charging on my ctek
Will check when running next weekend when back from S E Asia
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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That's low. I presume it's a dry cell? Nominal lead acid for most of charge/discharge cycle should be 13.2V (2.2V per cell). When new('ish) at full charge you should see around 13.8V fully charged... HTH 
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly
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Will order one to fit next weekend
JohnV6
2022 CX Plus Four
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