An alternator, if no external smart regulator is present, will put out whatever the internal regulator is set at. It could be anything from 13.4 V to around 14. For a shore charger it is best to have a smart charger that will reduce the voltage to around 13.2 to avoid boiling off the electrolyte during prolonged charging.
Rich > On May 6, 2014, at 12:54, via CnC-List <[email protected]> wrote: > > At the risk of beating a dead horse (battery), I have one more question for > the list. > > When the average sailboat engine is running, what is the likely charging > voltage to the battery or batteries? > > Unless one has an alternator output controller which matches the recommended > voltages for the batteries being > charged, it seems that they would be charged with whatever voltage the > alternator supplies. > > If this is the case, and if one rarely charges the battery(s) at the dock, it > seems a little pointless to > fret over what the voltage profile the battery charger provides, since the > batteries are likely charged mostly > when the engine is running without such a controller. > > > > Charlie Nelson > Water Phantom > > [email protected] > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > [email protected]
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