[C320-list] Inadequate Dedicated Starting Battery

[Graeme Clark]

Bob

G27 is 100Ah and 800 CCA right?

That should easily be enough to turn over the engine. 

But I cant see why it would need different cables which makes me wonder about how you wired it all together.

Might be worth a double check?

Graeme
#366, 1996



> On 7 Dec 2021, at 13:53, Bob Hoyt <rehoyt at gmail.com> wrote:
> 
> I recently installed a Duralast G27 Marine battery to serve as a dedicated
> starting battery to go with my house batteries (4 six-volt golf cart
> batteries in series). I installed it just forward of the starboard battery
> compartment. The existing cables are listed as 4 gauge, so I thought they
> were adequate.
> With a fully charged new battery and either a cold or warm engine, the
> motor will barely turn over. With the battery selector on all, it starts
> quickly. Is the group 27 battery underpowered or do I need to change the
> wire from the battery to the main switch and wire from the switch to the
> starter motor to 2 gauge? Thanks
> 
> Bob Hoyt
> Hull 154
> 1994 C320 "Ikigai"
> Pensacola, Fl
> 
> 
> -- 
> 
> *Robert (Bob) Hoyt MD, FACP, FAMIA, ABPM-CI*
> 
> *Associate Clinical Professor, Department of Internal Medicine*
> 
> *Virginia Commonwealth University*
> 
> *Richmond, VA*
> 
> 
> *CAPT (Ret) USN*
> 
> InformaticsEducation.org  <http://InformaticsEducation.org>
> rehoyt at gmail.com
> 
> Cell: 850-384-5235