Thanks, I am very familiar with Maine Sail's writeups on his site and various message boards and batteries are something I did a fair amount of reading .. just not enough absorbing! I will revisit the topic when I next have time. In the meantime, my question about the constant 12v feed for the stereo has been answered.
One of the things on the to do list is a wiring diagram of the boat :) "One" of the things. :) Cheers, Steve Suhana, C&C 32 Toronto On Wed, May 8, 2013 at 1:06 PM, Marek Dziedzic <[email protected]>wrote: > ** > Steve, > > If you read about batteries, charging (and discharging) you will probably > find that starting from "Both" is not the preferred option. > > Switching the batteries when the motor is running (or rather, when the > alternator is charging) may not be a good idea, but it depends on your > switch. If your switch disconnects both batteries and then connects one of > them, when you switch from "both" to "1" or "2", you should not switch when > charging - you may blow the alternator. However, some switches provide a > "smooth" path from "both" to one of the two batteries, so there is a > certain load all the time. In that situation, you can switch at will. > > Some would argue that you should use one battery as "main" and the other > as "spare". That way you start from the "main" (and the alternator charges > this battery when you are motoring). And you use the "spare", when the > "main" is dead or almost. If you switch to "both" right away you might kill > both batteries and leave yourself stranded, if one of them was dead (or > close). > > Some very good write-ups on these issues can be found on Sailboat Owners' > forum by Maine Sail. > > Marek (in Ottawa) > > > From: Stevan Plavsa <[email protected]> > To: [email protected] > Subject: Re: Stus-List Stereo constant 12V > Message-ID: > <caddevn6om9sdrqrer87ued4gu-r_y92e4oswx3j6c7y4nxq...@mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > > I have two batteries and a switch. I typically start and run from the > "both" position simply so that the alternator can charge both batteries. I > heard it's bad to switch while the engine is running. I leave the switch on > "battery 1" while away so that both batteries don't drain accidentally. > When I go sailing I really only have to run the motor for about five > minutes to get out and then five minutes to get back in. I'll need the > solar panel to keep my batteries nice and full all season as I plan to do > some weekend trips with a two week stint in August. > > Steve > Suhana > C&C 32 > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > [email protected] > >
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