[C320-list] Battery switch

[Warren Updike]

According to Nigel Calder who investigates power sources for boats, wet (lead acid) batteries are the least costly solution on a per amp-hour basis. If you stay with 4Ds, I recommend the Interstate SRM-4D. They are heavier than many 4Ds which are sold as commercial truck batteries for starting and low demand.

Warren and Pattie Updike
1994 C320 "Warr de Mar" #62
Middle River, Chesapeake Bay

-----Original Message-----
From: Ted Harrison [mailto:tharrison at innovations-plus.com] 
Sent: Thursday, June 08, 2017 12:21 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Battery switch

I am going to buy batteries tonight. I want to say with the 4D's.

Do I just order AGMs or ? 

Ted Harrison

> On Jun 8, 2017, at 8:04 AM, Jeff Hare <Catalina at thehares.com> wrote:
> 
> In a factory setup I would suspect that the engine's positive cable goes to
> the common lug of that 1-2-both switch so that you can use b1, b2 or both
> batteries when starting the engine.  The engine ground/negative cable goes
> to the first battery which then jumpers to the second so that all the
> battery ground terminals are always connected together.  
> 
> The common lug of the 1-2-both also goes to the electrical panel and the
> anchor windlass.
> 
> If you do not have a dedicated starting battery, I would consider that near
> the top of the priority list depending on your sailing situation of course.
> 
> Searching for 'starting battery' on the C320.org website and also in the
> discussion list archives through the "C320 Discussion List"->"Search/Browse
> Discussions" menu also on c320.org website.
> 
> Doing that can remove nearly all the issues/worry about drawing the house
> batteries down and not being able to start the engine.
> 
> Cheers!
> -Jeff Hare
> #809
> 
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
> Of Ted Harrison
> Sent: Wednesday, June 7, 2017 7:52 PM
> To: C320-List at Catalina320.com
> Subject: [C320-list] Battery switch
> 
> The battery switch has 1, 2, both. 
> 
> My Manuel says 1 is for battery one. 2 is for battery two. Engine cable goes
> to both. 
> 
> Is that correct? 
> 
> Why doesn't the engine cable go directly to position 1 
> 
> Ted Harrison=
>