Friday, November 29, 2024

Re: [electricboats] Complex design issues

Thanks Luke. I already have both generators and unfortunately bout the 100 watt PVs before I had researched it. I'm still concerned about lifepo battery's as lithium tends to blow up in a potential water environment and management is a bigger deal. I've been using Enersys Odyssey  1800 PC AGM batteries and after 10 years they're still putting out 12.6 to 12.8 volts. They're less expensive than lifepo4s and easier (as I'm an old guy) to maintain. Your right though, I wish I had invested in eight 300watt PVs. Unfortunately,
I also only have room for 8 motor batteries and the house batteries. I've forgotten the size and pitch of my prop....gotta check that. Thanks
Dale


On Fri, Nov 29, 2024, 8:03 PM Luke Johnson via groups.io <Jukelohnson=gmail.com@groups.io> wrote:
Im no expert but I have a comparable  setup with a catalina 30 with a 48v lifepo4 battery bank.  I get about 30 amps at 4 knots, 60 amps at 5, 90 amps at 6.  Prop is 12" diameter 6" pitch.  Hope that info helps.

If it were me I'd get one generator and put the rest of the cash into higher output solar panels and one or more lifepo4 battery banks.  I don't know the size of your panels but 8 x 100 panels seems like low output for the footprint, isn't it?

8 400 watt panels would be nice, and make lots of power if you had a bank big enough to store it.

Just some thoughts -

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