When I started cruising in the early 90s, the commonly recommended battery configuration was to have equal size batteries and designate the banks 1 and 2. You either started the engine and charged batteries using ALL, then switched to 1 or 2 after the engine was turned off, or you used 1 exclusively on odd number days and 2 on even number days.
But small battery size in comparison to increasing loads from things like refrigeration and radar has caused a lot of dead batteries. So there has been a shift to the modern convention of having a small dedicated starting battery and a much larger house bank. There are much better ways to configure and charge a small start large house arrangement, but the 1-ALL-2 switch is still pretty common and effective if you pay attention. And new switches are "make before break" designs so you don't need to worry about killing the diodes in the regulator if you have the proper switch. Rick Brass Sent from my iPad > On Sep 28, 2014, at 18:26, dwight via CnC-List <cnc-list@cnc-list.com> wrote: > > Jonathan > > From your statement “Rememberwas to have equal sized batteries and designate > them as bank 1 & 2 not to switch the 1-ALL-2 when running the engine” > > If position 1 is for start and position 2 is for house, considering the > statement above how does one switch from position 1 to position 2 for > charging the house bank with the alternator while steaming. > > Dwight Veinot > C&C 35MKII, Alianna > Head of St. Margaret's Bay, NS > > From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Josh > Muckley via CnC-List > Sent: September 28, 2014 5:10 PM > To: C&C List; Indigo > Subject: Re: Stus-List Boat Batteries > > +1 to Rick's comments. > > IMO you should get 2 of the largest and highest Amp-hour (heaviest) > "deep-cycle" batteries that will fit in your compartment. Use them > interchangeably to start and run house loads. Others have suggested > switching the 1-ALL-2 selector based on the odd/even day of the week to > equalize run time. > > There are things you can do to improve your setup but if the exsisting setup > has worked without issue for 12 years then I say stick with it. > > Remember not to switch the 1-ALL-2 when running the engine. Doing so can > momentarily break the charging circuit and blow the diodes/regulator in the > alternator. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > On Sep 28, 2014 10:47 AM, "Indigo via CnC-List" <cnc-list@cnc-list.com> wrote: > Looks like I need new batteries! I have lived for 12 years with two > batteries - one used for house and the other kept in reserve via off-1-all -2 > switch. > > Would like to have a dedicated starting battery in addition to two deep-cells > but do not see how I can fit the three in the locker under the quarter berth > - and am reluctant to give up any other locker space. - so it looks like I > will stick to the two. > > I googling marine batteries I see that there are dual purpose ones available. > Anyone know if this is just a marketing "hoax". In particular Batteries Plus > have a Group 27 dual purpose Duracell battery for $95 - seems like a steal - > or am I going to be disappointed with how long I can expect it to last (I > presume all group. 27 give out the same amp/hours - or do I have to watch out > there? > > -- > Jonathan > Indigo C&C 35III > SOUTHPORT CT > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of page > at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2014.0.4765 / Virus Database: 4025/8285 - Release Date: 09/27/14 > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of page > at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com >
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