[C320-list] Battery Logic

[Chris Burti]

Dean.
When I researched the specs of Commercial duty 4D batteries, I found them
to have have about 90% or more of reserve capacity compared to deep cycle
mostly due to heavier plates and similar anti-vibration matting at about
50% of the cost. I have been extremely happy with the performance of my
Exides and do cruise.

On Mon, Sep 21, 2015 at 2:04 PM, Dean Vermeire <dean at vermeire.us> wrote:

> 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)
>



-- 
Chris Burti
Farmville, NC