Quote:
Originally Posted by Spike
I'm fighting this exact same problem - battery fully charged, tested with ammeter and no drain from circuits. It starts, leave it overnight and it doesn't start.
Fully charged, I'm reading c.14v across the terminals but leave it overnight, i'm getting c.9.5v and it's not starting. If I had any hair, I'd have torn it out. I'm awaiting arrival of a new battery, as that seems the likely culprit but I'll report back.
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That's the problem we had on our TF. Fitted a new battery a couple years ago, and this year the battery kept draining if the car wasn't used for a few days. It got worse until it got to the point you could fully charge the battery, fit it in the evening and by the morning it would have drained enough to start the car. Was showing 13v when charged but wasn't holding it. replacement battery sorted it. This is why I tested for a parasitic drain as thought something was draining the battery.