Needing 'a good charge' can indeed be a factor, but more so with Alternators
which generally charge at a lower voltage than dynamos - 14.7v max as
opposed to 15.5v max. Some time ago I read that Mercedes were having to
select alternator voltage regulators for ones with a voltage at the higher
end of the range, as the ones at the lower end weren't putting enough
capacity back into the battery if it got discharged somewhat.
PaulH.
----- Original Message -----
> ... I thought after sitting
> so long, and draining so low, the batteries might need to
> have a "good charge" put on them like you do with a boat
> battery in the spring - either that or drive the car for
> a few days in a row to give it plenty of opportunity to
> charge.
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