Joe, thanks for the reassurance on the group 27's! That's what I have and I
have been worried that I am missing out on something with my old batteries, but
we are always tied to a dock as you describe, so I am good ---(for now)....!
Richard
1985 C&C 37 CB: Ohio River, Mile 596;
Richard N. Bush Law Offices2950 Breckenridge Lane, Suite NineLouisville,
Kentucky 40220(502) 584-7255
On Tuesday, February 20, 2024 at 10:57:31 AM EST, Della Barba, Joe via
CnC-List <cnc-list@cnc-list.com> wrote:
If you are primarily going dock to dock and don’t care about being anchored out
or underway for days, the old standard two group 27 batteries will do just
fine, you are only dealing with hours of no engine, not days.
I would still go AGM just because I hate wet batteries. We had one crack open
in a hurricane and the extra-special smell was not appreciated.
Joe Della Barba
Coquina
From: CHARLES SCHEAFFER via CnC-List <cnc-list@cnc-list.com>
Sent: Friday, February 16, 2024 1:58 PM
To: Stus-List <cnc-list@cnc-list.com>
Cc: CHARLES SCHEAFFER <cscheaf...@comcast.net>
Subject: [EXTERNAL] Stus-List Re: Lithium vs AGM
Hi Brian,
I watched hundreds of videos installing lithium battery systems in sailboats
and also in RVs. I found MarineHowTo.com had a link to Victron diagrams and
there are many many videos describing each Victron module on YouTube.
I didn't go very deep into solar panels, which is probably where I'd start if
our boat was on a mooring.
My situation is different.
Our boat is in a slip with 30amp power available and we enjoy air conditioning,
no extra charge. I couldn't build a lithium/solar system large enough to
support air conditioning so it lost a lot of attraction. We mostly daysail and
return to the slip. When we cruise, my wife prefers a marina over anchoring
out, where they have a pool, so we take a slip at a marina and plug in. We
enjoy walking strange towns and learning the history and finding good
restaurants and live music and meeting new people. It's all part of the
adventure of cruising.
Chuck Scheaffer, Resolute 1989 C&C 34R Annapolis
On 02/16/2024 6:03 AM EST nausetbeach--- via CnC-List <cnc-list@cnc-list.com>
wrote:
Chuck, Bill and any others:
I am in a similar position; my batteries are on their last legs. Was hoping to
make another season with them but need to dive into LFP batteries as a
potential replacement. Some people really like AGM, but my understanding is
they need to be brought back to 100% SOC and I am on a mooring so cannot just
plug in at the end of the day.
Where / what sites have you been using to learn about LFP batteries? So far I
have looked [but need to spend more time at] Rod Collins “Marine How To” site,
and Ocean Planet.
I also need to get up to speed as best as I can on solar – so any suggestions
there as well. Have spent some time on the “alltestore . com” site.
Thanks,
Brian
From: CHARLES SCHEAFFER via CnC-List <cnc-list@cnc-list.com>
Sent: Thursday, February 15, 2024 6:15 PM
To: Stus-List <cnc-list@cnc-list.com>
Cc: CHARLES SCHEAFFER <cscheaf...@comcast.net>
Subject: Stus-List Lithium vs AGM
Hey Bill,
I am replacing my 12 and 13 year old AGM batteries with AGMs. I spent at least
40 hours this winter learning about Lithium, because decent lithium batteries
can be found for a few dollars more than AGMs. But I don't have room on my
boat for the inverter/charger and all the costs of that and all the modules and
cables, required to complete a system like that, pushes a lithium project way
over my budget. I am installing a Victron shunt to read my power useage and
monitor various loads, and I'm adding some fuses at each battery, so I can
always upgrade the system later, if it's warranted.
I'll be adding a cheap 1000watt pure sine wave inverter to power my TV, DVD,
chargers and coffee maker.
Curious about your project.
Chuck Scheaffer, Resolute 1989 C&C 34R, Annapolis
On 02/15/2024 4:27 PM EST Bill Coleman via CnC-List <cnc-list@cnc-list.com>
wrote:
I'm a little surprised, I would have expected a progressive fellow such as
yourself to be jumping into lithium. I am wasting an inordinate amount of time
researching charger inverters, and I think although the lithium batteries may
come down more in the future, I think because I need new batteries the time is
now.
Bill Coleman
On Thu, Feb 15, 2024, 12:34 Joe Della Barba via CnC-List
<cnc-list@cnc-list.com> wrote:
I recently got a big AGM battery that needs a big charger. I have a ProNautic
15 amp charger with a battery temperature probe that is necessary for correct
charging of any lead-acid battery. It can charge 1, 2, or 3 batteries and has a
lot of settings for various charge profiles.
It works fine, it is only being removed because I got a bigger charger. They
sell for $350-$400 new, I will send this one to any USA address for $150
shipped. Canada might be more, I would have to check.
(Odyssey battery company told me they want their battery charged with at least
a 30 amp charger and ideally a lot more, apparently they need to be hit hard to
stay good)
Joe Della Barba
Coquina C&C 35 MK I
Kent Island MD USA
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