[C320-list] Batteries

[Daryl Hunt]

I just replaced my 8 yr old Interstate SRM-4Ds with the same size/type/brand.  Price was the deciding factor, $186/each.  
Removing old 4Ds and installing new was a two person job, but easy.  I inserted a length of pipe ~8" longer than the battery through the carrying straps.  That made lifting and carrying easier.  Toughest part was going up and down companionway steps.  Try to keep the batteries level.  The salon table came out easily to clear the way.
I also installed a Balmer Smartgauge next to the battery switch above the starboard settee.  Next project is adding a starting battery, probably next year.
Presently cruising the west end of Lake Ontario, at Queen City Yacht Club, Toronto Island.
Fair winds,Daryl Hunts/v Believe - '99 C320 #660Rochester, NY
Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Scott Westwood <scottwestwood at bellsouth.net> Date: 7/11/18  7:26 AM  (GMT-05:00) To: Catalina List <c320-list at catalina320.com> Subject: [C320-list] Batteries 
OK.  Another loaded question:
I am trying to dig into the decision to replace the existing battery(ies) or switch to AGM.  One of my Liquid Batteries is toast and needs to be replaced.
AGM batteries are more than twice the price and it will "likely" mean replacing my existing charger.  I need to verify that but I am assuming, for now, that I will need to replace the charger I just installed 3 years ago.
I understand the value of non-liquid AGMs and not having to keep re-filling distilled water, heeling not an issue, etc....
If I go ahead and go to AGM and replace my charger, then I might as well go ahead and get an upgraded monitoring system.  Right now I have the old analog rocker switch and I would go/add a digital one that would show the current load.  I always like the thought of knowing how much current you are drawing "right now".  I added a remote panel monitor for the charger when I replaced it so I have some sort of monitor but would be nice to know current draw.
A co-sailor is suggesting I move to the West Marine 4D  at $790 each... while I can replace the existing liquid LA for $280 each and keep my charger.
Does anybody have any experience with longevity of the AGMs?  If they live twice as long it might be worth it to do it all now.  If not then I don't see the value.  I can replace these LA batteries every 5+ years and save boat units.
May even think about adding a start battery??
Any thoughts out there?  Has anybody re-done all this and have models/pics/experices etc....  Projects on the website?
I said it was a loaded question(s). 
Thanks,
Scott Westwood scottwestwood at bellsouth.net H (919)-362-8538    C (919)-618-7185