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
<mailto: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
<mailto: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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me pay the associated bills. Make a contribution at:
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Thanks for your help.
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Thanks for your help.
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