"Gould 0738" wrote in message
...
Are you claiming that if you can ever read 13.2 volts from a battery it must
be
fully charged?
Yes or no answer please.

Must be?
No. You could get a false reading.

Exactly. You have no information. The battery could be at 60% or it might be
at 100%. You have to wait until the voltage stabilizes.



But you can get a 13.2 reading from a fully charged battery without it being a
false or artificial reading. That's the combined voltage of all six cells
before the battery self discharges to a lower voltage.

It isn't "self discharge."


After a battery partially discharges, it will stabilize around 12.6.
Partially
discharged is not the same as fully charged- although it will represent a
common state of charge for batteries that have been removed from
a float charer and allowed to self-discharge to that level.

Since this happens fairly quickly, are you now claiming that battery will loose
a sustantial part of its charge in the the first 10 minutes? It was at 100%
then it drops to what, 80% ten minutes later? Then magically it goes into a
mode where it only looses 5% a week? What color is the sky in your world?



Why do you suppose every battery charger mfg sets float voltage at 13.2 or
13.3?
Just an arbitrary number?

What does this have to do with anything?



I'm amused to see that the laws of physics are suddenly suspended when they
don't support your tottering argument. :-)

Tottering? You just admitted I was was right! Your words: "You could get a
false reading." You originally claimed that 13.2 meant the battery was fully
charged. Now you admit it could be a false reading. Your right. The only way
to tell what the true state of charge is to wait for the voltage to stabilise
(not self-discharge). If it stabilises at 12.6, its fully charged.