[C320-list] Couple of start Battery questions

[John Meyers]

Mark,

I went to the Blue Sea website and searched for 5511a and did not find it.
But, I did find 5511e. Is that the one?

Thanks

John Meyers

On Sun, Jan 27, 2019 at 11:33 PM Mark Cole <boatnboot at me.com> wrote:

> I added a start battery to my boat a couple of years ago and went with a
> Group 27, 100AH, 640CCA and it has worked fine.  I made a note that a
> starter usually draws (engine cubic inches x 2) amps and for my Perkins M30
> that was 60ci x 2 = 120 amps, so I used 0 AWG wire from the battery to the
> starter.
>
> You might also want to take a look at a dual circuit switch like the Blue
> Seas 5511a.  This switch has separate circuits for the start battery and
> the house bank permanently wired (no A/B setting) so the start battery is
> always connected to the starter and the house bank is always connected to
> the DC distribution panel.  No need to change the selector at all and no
> chance of drawing down the wrong bank, unless you need to combine both
> banks.  Big plus is that it is the exact same size as the DC battery switch
> on the 320 panel and is easy to change out.
>
> Mark Cole
> Fiddler’s Green #8
> Puget Sound
>
> > On Jan 27, 2019, at 3:08 PM, Stephen Cox <scox at timmin.com> wrote:
> >
> >>
> >> I just need to make sure I have a Start Battery large enough
> >> to crank the Yanmar 3GM30F.
> >>
> >>
> >>
> >> FYI ..   I "was" not going to use AGM for the start battery.
> >> I was going to use cheaper non-serviceable Lead Acid since
> >> the Balmar DDC 12/24 allows you to configure for any kind you
> >> want.  It only charges the Start Battery when needed and
> >> pulls the charge from the house bank source.  (Assuming I do
> >> things the way I plan).
> >>
> >> While writing this...I just found an AGM at 800 CCA for the
> >> same price so I may change my mind on AGM start battery.
> >>  Anybody know the minimum/ideally sized start battery for the Yanmar?
> >>
> >
> >
> > From the manual... 12V 64 AH or more (type 95D31L or equivalent)
> >
> > I seem to recollect reading somewhere else that 650 CCA was recommended
> and
> > looking up 95D31l batteries on the net, they seem to come in around the
> 650 -
> > 750 CCA mark so an 800 CCA battery should be fine.
> >
> > Regards,
> >
> > Stephen Cox
> > Tegwen #1141
> >
>
>