[C320-list] Battery Logic

[Dean Vermeire]

Thanks, Bill.  I won't be able to get out there until next weekend.

I'm getting by on the one battery.  I think I will wait until the 
off-season to do some upgrades.  I think a new charger with a remote 
display is in my future.  :)

Dean

On 9/22/2015 8:18 AM, Bill Lowe wrote:
>   Dean, I pretty sure my charger is connected to both batteries. If you would like to take a look/pictures how they are wired you are welcome to come by and poke around. I'll be at the Lake today/tomorrow (9/22) and again Fri/Sat.
>
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> Bill Lowe
> Papillon #1146
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> -----Original Message-----
> From: Dean Vermeire <dean at vermeire.us>
> To: C320-List <C320-List at Catalina320.com>
> Sent: Mon, Sep 21, 2015 4:54 pm
> Subject: Re: [C320-list] Battery Logic
>
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> Hi Jeff,
>   
> Thanks for the response.  It hasn't ever made sense to me why both
> batteries aren't connected to the charger.  I guess someone saved a
> little money on wiring.
>   
> Dean
>   
> On 9/21/2015 4:28 PM, Jeff Hare wrote:
> > Hi Dean,
> >
> > There's really no good reason why you would have a multi-bank battery charger
> with only 1 output connected.  If the second output is still wired from the
> charger compartment to the battery compartment, I'd hook it up.  EVEN if you put
> the batteries in parallel (Both position), it's perfectly fine to have to
> charger legs hooked up to each of the house batteries.  The charger does not
> care.
> >
> > The one positive part of using a Starting battery (vs dual purpose or deep
> cycle) for engine starting is that you can get away with a smaller starting
> battery that will be better at starting the engine.  Starting batteries supply
> more current at a given voltage than dual purpose or deep cycle batteries, so
> they'll often be able to start the engine when the dual purpose battery won't.
> Deep cycle/dual purpose batteries are ok to be drawn down but are damaged by
> high current loads.  Starting batteries are fine with high current loads (like a
> starter), but don't like to be drawn down low.  So, if your second 4d battery is
> always used for starting and not always topped back up, it will probably have
> more plate damage than the one that is used for lights and instruments.
> >
> > So... If the wires are there, hook one charger leg up to each 4D battery.
> This will not cause the batteries to be in parallel and when the charger isn't
> running, they will remain isolated.
> >
> > -Jeff.
> >
> > -----Original Message-----
> > From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of
> Dean Vermeire
> > Sent: Monday, September 21, 2015 2:04 PM
> > To: Catalina 320 List <C320-List at Catalina320.com>
> > Subject: [C320-list] Battery Logic
> >
> > As any battery discussion, this one starts with a dead battery.  One of the
> two batteries has gone bad.  I've tested both and identified the bad one.
> >
> > Our boat is a 2001 model (#847), with the original ProMariner Protech 1220i
> charger and two #4D 12V batteries, neither of which is a deep cycle battery.
> Only battery #1 is connected to the charger, which means that battery #2 only
> gets charged when the selector switch is on "Both".  This is how the boat was
> when I bought it.
> >
> > We sail on a lake in Kansas, so it is not like I will be out cruising for a
> week.  I really don't need to have two #4d deep cycle batteries and put in a
> separate starting battery, change the alternator, etc.
> > However, I am inclined to replace the dead battery with a deep cycle battery.
> >
> > So, here are my questions for you battery-minded people...
> >
> > 1.  Why was the boat wired with only one battery connected to the charger, and
> would it be better with both connected to the charger?
> > 2.  Can you think of any reason why I couldn't have a deep cycle and a
> starting battery on the same charger, as long as they are of the same battery
> type (e.g. lead acid, maintenance free)?
> >
> > Thanks in advance,
> > Dean Vermeire
> > Moonstruck II (#847)
> >
> >
> >
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