C387 Extra Battery

harpon · #1 (**permalink**) 11-10-2006

Hi all,

I am a proud owener of a Catalina 387 and I would like to install a 3rd battery, decitated for starting. Looking at the wiring diagramms, Catalina has the option for a 3rd battery but I am not sure where this would be located.

Any ideas would be much appreciated.

Thank you,

Harry Pontikis

Vasco · #2 (**permalink**) 11-10-2006

Harry,

Isn't one of your two batteries a dedicated starting battery already?

SailinJay · #3 (**permalink**) 11-10-2006

I know that on the 350, folks have been installing a third battery for starting under the port cabin bench seat, which is adjacent to the two house batteries. I opted for another water tank, which was placed in that space.

Tusitala2 · #4 (**permalink**) 11-11-2006

Hi Harry, I installed mine in the small locker in the floor just forward of the other batteries. I looked at just about all of the other options and decided that giving up that small locker was the best idea.
Regards,

harpon · #5 (**permalink**) 11-12-2006

Thanks guys for all your idesa; I think the area that Andrew is talking about will be the most convinient.

Yes one of the batteries is meant to be for starting but I would like to have the extra capacity as well as redundancy.

By the way, does anyone know the actual Ah capacity of these 4D Batteries.

Thank you,

Harry Pontikis

camaraderie · #6 (**permalink**) 11-12-2006

4D's typically come in at around 155AH's +/-10%...so with 2 house and one (separated) starter you have a working availability of 155 amps before you need to recharge your house bank. A "use" meter like a Link10 would be a big help in monitoring this and if you are installing a new battery, this is the easiest time to do it.