[C320-list] 4D Battery

[Utility Email]

I thought hard about replacing the stock OEM batteries after one of mine ruptured.  Quite a mess that I had to clean up with a lot of baking soda.  

Instead, I converted over to 4 - 6V Trojan T105+ golf cart batteries.  I have been very happy with their performance.  A bit more Ah capacity (500Ah @ 100 hour rate) and very reliable deep cycle construction.  I also replaced my OEM Charles 30A charger with a Sterling Pro 40A charger at the same time.   Also installed a Bimini mounted removable 125W Solbian flexible solar panel.

This summer I determined that this set up allows us to stay at anchor for easily a week in sunny weather with only 1 refrigerator on.  If we have both the front loading and the top loading refer on, I can get about 4 days without engine charging.  This is with stereo and TV use with all LED lighting.  

There are photos of my installation in the Owners Photos section of the C320IA website.  

I recommend upgrading to golf cart batteries for a more robust system. 

Dave Swanson
S/V Emily Ann
2007 C320 MK II, No. 1107
Mukilteo, WA


David B. Swanson, P.E., S.E.
Principal, LEED AP, F. SEI
Director, Structural Engineering

Reid Middleton, Inc.
(425) 741-3800 office
(425) 741-5011 direct
(425) 508-7971 mobile

www.reidmiddleton.com

> On Aug 19, 2016, at 12:50 PM, Jeffrey Brown <oceanblues at mac.com> wrote:
> 
> I was researching the archives of past postings about 4D replacement batteries, there’s lot of discussions over the years. One that stuck out was Warren and others posted in 2011 identifying the Exide COM-4D-P.  Were those of you that have these batteries happy with the selection? Are there others to consider? 
> 
> 
> Best regards,
> 
> Jeffrey Brown
> (949) 350-5123
> 
> 
> 
>