[C320-list] Battery Help / Confused ?

[Monte B.]

Joe,

The place I would start is trying to determine the age of the batteries. The
life expectancy of these batteries runs the gamut depending on how you use
them and maintain them. If you are in the battery business, (you own a boat)
get a commercial grade battery hydrometer to assess cell state of charge.
The specific gravity reading of the electrolyte roughly equates to the state
of charge, I.E. 1240 = 12.4 volts. If after a full charge the readings vary
by .2 or more you need to equalize the batteries. Throw away the promariner
charger and get a Xantrex as it has an equalize mode. By the way, my
promariner also failed in the full charge mode and fried 2 4D batteries.
(8d,s wont go in the boxes without mods). The S.G. or state of charge will
not reveal capacity but as batteries age capacity always suffers due to
sulfation on the plates. The equalize mode counteracts this phenomena to a
degree. If your batteries are three or more years old they have done well
and they may not be shot but will suffer from reduced capacity. Five or more
years and it is time to recycle from a reliability standpoint. I cannot
comment on the boat wiring, but it sounds like you may have a battery with a
shorted cell.

Monte
Laima #620



-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of
BAdams3491 at aol.com
Sent: Monday, April 21, 2008 5:33 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Battery Help / Confused ?

Good advice.
 
Bert
At Ease
#442
 
 
In a message dated 4/21/2008 5:10:53 P.M. Central Daylight Time,  
Orlando.Duran at AveryDennison.com writes:

If this  is your first experience with deep cycle batteries (or 12V systems
on a  boat), go to www.amazon.com and order this book, it's an invaluable
source  of information on the subject.


Boatowner's Mechanical &  Electrical Manual: How to Maintain, Repair, and
Improve Your Boat's  Essential Systems (Hardcover)
by Nigel Calder  (Author)




"Joe Abbagnaro"          
<jabbagna at gmail.        
com>           To 
Sent by:    C320-List at catalina320.com           
c320-list-bounce        cc 
s at lists.catalina            
320.com              Subject 
Re: [C320-list] Battery Help /     
Confused  ?                       
04/21/2008  03:05                      
PM     


Please respond              
to             
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na320.com     






Bert

Why do you say the battery is 75%  discharged.?
A 12 volt battery at rest I thought usually displays 12.2 -  12.4 volts
when not being charged, while being chrarged it is usually 14 +  volts
and shorly after being charged   13+ volts and will  eventually
stabalize to 12.2 - 12.4.

This is my first experience  with deep cycle batteries so if I am wrong
than let me  know.

Thanks

Joe


Bob

The batteries are not  orginals one was replced in 2005 and one in 2006,
The chrger is the  original a Flyback Promariner that makes a lot of noise,
which might need  to be replaced.

Joe

On Mon, Apr 21, 2008 at 4:02 PM, Robert  Seastream
<robert.seastream at comcast.net> wrote:
> And if the  batteries are originals, depending on their care and feeding
> under the  PO, it may be time for replacement.
>
>  Bob  Seastream
>  Intuition # 906
>
>
>
>   On Apr 21, 2008, at 3:29 PM, BAdams3491 at aol.com wrote:
>
>
>  > Part of the problem is the 12.4 volts...that's about 75%  capacity.
> >
> > Bert
> > At Ease
> >  #442
> >
> >
> > In a message dated 4/21/2008  7:27:21 A.M. Central Daylight Time,
> > jabbagna at gmail.com  writes:
> >
> > Hi
> >
> > I have a 1999  320 Hull 574, I bought the boat from the  original
owner.
> >  It has 2 Batteries , NO Dedicated start battery. So I am   pretty
confident
> > the wiring is original from the factory. Both  batteries  are reading
> > about 12.4 volts but I have no way to  load test them. My  problem has
> > me confused.
>  >
> > 1)  Select battery 1 Engine starts but  no other  accessories will
work.
> > If I turn on the map  light it  comes on at less than half light
> > than fades off after a second  or  so
> > to no light at all. Almost looks like  a   feed back condition
> > through the light.
> >
> >  2) Select Battery 2 Engine  will NOTt start,  but all the  Accessories
> > will work when powered  on.
> >
>  > 3)  Select ALL and Engine starts all Accessories  work.
>  >
> > Do I have a bad Battery, or possibly a Bad selector   switch.
> >
> > Joe
> >
> >
>  >
> >
> >
> > **************Need a new ride?  Check out the largest site for U.S.
used
> car
> > listings  at AOL Autos.
> >  (http://autos.aol.com/used?NCID=aolcmp00300000002851)
>  >
>
>



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**************Need a new ride? Check out the largest site for U.S. used car 
listings at AOL Autos.      
(http://autos.aol.com/used?NCID=aolcmp00300000002851)