[C320-list] Battery Charging

[Bruce Stanley]

Two 40 Amp fuses, 7" from batteries.........as now installed by Catalina.

Question:
should I have installed a FUSE, 7" from my new 80amp Starting
Battery?????????
I followed the 3rd Starting Battery Tech notes (as on the C320IA site), but
I do not recall installing a Fuse at the Battery.
I am a bit worried. We will be back on board, tomorrow.
Any Advice in the mean time?

thanks
Bruce Stanley #1084
Sydney Australia


On Feb 13, 2008 11:50 PM, Jeff Hare <catalina at thehares.com> wrote:
> I suspect you're both right.  For a perfect full charge, AGMs are a
slightly
> higher voltage battery than stock flooded.  But the charge stage cycling
> between them seems to be similar.  You *might* be under-charging an AGM
> slightly using standard settings, but it should be just fine and not
> noticeable.
>
> Chargers with AGM settings probably just alter the voltage tables very
> slightly for more optimal results. (But the difference is probably
> insignificant in our application)
>
> -Jeff
>
> -----Original Message-----
> From: c320-list-bounces at lists.catalina320.com
> [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of
> crashley at gte.net
> Sent: Wednesday, February 13, 2008 1:30 AM
> To: C320-List at Catalina320.com
>
> Subject: Re: [C320-list] Battery Charging
>
> Warren,
>
> The battery literature I've found says that the AGM and flooded marine
> batteries use the same charge voltages since it's the same battery
> chemistry, the difference being that the electrolyte is contained in a
glass
>
> mat as opposed to liquid form. And they are truly sealed never requiring
> water to be added (which is maybe the main reason I went with them). As
you
> say, it also mentions that the AGMs are more sensitive to overcharge and
> temperature compensation is recommended. Apparently the GEL cells are a
> whole different animal.
>
> Some links:
>
> http://www.eastpenn-deka.com/default.aspx?pageid=468
>
> http://www.vonwentzel.net/Battery/
>
> CRA
> Rosebud #882
>
>
> ----- Original Message -----
> From: "Warren Updike" <wupdike at hotmail.com>
> To: <C320-List at Catalina320.com>
> Sent: Tuesday, February 12, 2008 4:26 PM
> Subject: Re: [C320-list] Battery Charging
>
>
> >I presume y'all new owners of AGM batteries know that the charging
voltages
>
> >for AGM are different than for Gel or AGM.  If your charger cannot be set
> >for specific battery types, you might not want to leave your new AGMs on
> >charge all the time.  They may seem like small differences; but,
> >apparently, it makes a difference.
> >
> >                                Absorbtion    Float
> > Flooded (wet cell)    14.2 to 14.5V 13.2 to 13.5V
> > AGM                      14.4 to 15.0V  13.2 to 13.8V
> > Gell Cell                  14.0 to 14.2V 13.5 to 13.8V
> > Source: www.batterystuff.com
> >
> > I'm not an expert here, just aware of stuff.  Check with your battery
> > manufacturer.  Or, perhaps one of our "experts" can check-in on this.
> >
> > Warren & Pattie Updike
> > C320, #62, 1994, "Warr De Mar"
> > Frog Mortar Creek, Middle River
> > Chesapeake Bay
> >
> > ----- Original Message -----
> > From: <crashley at gte.net>
> > To: <C320-List at Catalina320.com>
> > Sent: Tuesday, February 12, 2008 1:21 AM
> > Subject: Re: [C320-list] Battery Charging
> >
> >
> >> Doug,
> >>
> >> That seems to be the general consensus. Up to now I have always left
the
> >> charger on but I had a cell go bad (shorted) in one of my two 4D
flooded
> >> batteries a couple of months ago. They were only 5+ years old, but the
> >> boat was used and I'm not sure how deeply or frequently the previous
> >> owner may have disharged them. I replaced them with two 4D AGMs and
> >> certainly don't want to abuse them.
> >>
> >> Thanks,
> >> CRA
> >> Rosebud #882
> >>
> >>
> >> ----- Original Message -----
> >> From: "Doug Stieber" <djstieber at gmail.com>
> >> To: <C320-List at catalina320.com>
> >> Sent: Monday, February 11, 2008 6:59 PM
> >> Subject: Re: [C320-list] Battery Charging
> >>
> >>
> >>> Batteries last best if kept at full charge.  If your battery charger
is
> >>> operating properly, it will cut out when the batteries are fully
charged
>
> >>> and
> >>> only cut back in when they need to be charged.  My advice is to keep
the
> >>> charger plugged in all the time.  By the way I replace my batteries
> >>> after 7
> >>> years even though they still had life in them.
> >>>
> >>> Doug Stieber, Second Chance #406
> >>>
> >>> On Feb 11, 2008 5:06 AM, <crashley at gte.net> wrote:
> >>>
> >>>> I've heard that one should not keep boat batteries on charge for
> >>>> extended
> >>>> periods. That is, when docked in my slip (which is most of the time),
> >>>> should
> >>>> I leave the charger on continuously or leave it off and only charge
> >>>> once a
> >>>> month (or so)? The charger is a 3 step type which ends up in "float"
> >>>> mode at
> >>>> about 13.5 volts. Also, the charge is a Pro Mariner 1230 which seems
to
> >>>> have a bad reputation. Any advice?
> >>>>
> >>>> Rosebud
> >>>> #882
> >>>>
> >>>
> >>
> >>
> >>
> >>
> >
> >
>
>
>