Hi John,
Welcome to Electric Boats! I converted my Cheoy Lee Bermuda 30 ketch a few years ago, and have posted information about it more times than you want to read. You can do an advanced search in the Yahoo group for author contains "ewdysar" and you'll get almost 1000 hits. Add the keyword "comparison" or "measured" from the message body and you'll get a more reasonable list of posts.
You are correct, LiFePO4 prismatic cells are very stable and will not catch fire, even when shot through with a gun or stabbed with a screwdriver. I am running an 8kWh (160Ah-50V) pack of Thundersky cells in my boat. I really like these batteries for a number of reasons, consider yourself lucky to get a boat that already has this upgrade.
Fair winds,
Eric
1964 Bermuda 30 ketch, 5.5kW Propulsion Marine drive, 8Kwh Lithium batteries
Marina del Rey, CA
--- In electricboats@yahoogroups.com, John Roemer <activeenergy@...> wrote:
>
> Fred,
>
> I'm away for a couple of days and can't remember the amp hours of the pack. Â I'll look when I get back. Â I had some initial concern about Lithium batteries and fires, but these are the lithium iron cells and, apparently, less subject to fires from moisture intrusion through cracks. Â Â
>
> What motor and how many volts are you running?
>
> John
>
> ________________________________
> From: Fred Liesegang <fred4936@...>
> To: "electricboats@yahoogroups.com" <electricboats@yahoogroups.com>
> Sent: Monday, May 13, 2013 4:51 PM
> Subject: Re: [Electric Boats] New member
>
>
>
> Â
> Hi John,
> Â
> Welcome! Sounds like a great set-up! The 33T Morgan is very sharp! I have a Tartan 27-2 converted to electric, but with flooded lead acid. I hope to go to something else in a couple of years,either lithium or nickel-metal hydride. I'm curious to find out the kw of your pack. Mine is 9kw, which I know is good for at least two hours. i hope to get some better numbers this summer. Good luck with it!
> Â
> Fred
> Â
> Â
>
> From: "activeenergy@..." <activeenergy@...>
> To: electricboats@yahoogroups.com
> Sent: Thursday, May 9, 2013 12:06 PM
> Subject: [Electric Boats] New member
>
> Â
> Hi.
>
> Just introducing myself here.
>
> I have a Morgan 33T sloop in the Bay Area of California. I just purchased it and it has an electric drive.
>
> It's a 10 HP motor with two banks of Lithium batteries at 48 volts. Full battery monitoring and charging system and a solid state controller.
>
> It seems to run for at least four hours.
>
> It's the first system like this I've had and I'm still learning about it. It would be fun to hear from others with electric sail boats and boats with Lithium bats.
>
> John
>
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