Sent from my iPad
Hey James,
Are you still thinking about converting your 41' cabin cruiser? What is your latest list of components? The link you posted suggests a 23.9kW drive with 95kWh of batteries. I've found their AGM batteries for only $0.25/Wh, so their suggested battery bank would cost $24,000 and weigh 5,000 pounds.
I've looked at the Mastervolt stuff, very pretty but very pricey. The Lithium batteries are down to $5000 for 160Ah at 24V (4kWh) or $1.25/Wh. The system that your link suggested for my 30' sailboat was 25kWh of Lithium (over $30,000, 650 pounds) or 37kWh of AGM ($10,000, 2600 pounds). My whole boat is worth less than $20,000
The drive that they suggested is rated for 8.5kW. Every converted 30' sailboat that I've seen discussed on this board has been very successful with a 5kW drive or less, and I haven't heard of anyone running a battery bank that size.
That said, their systems are probably much less of a compromise, bigger motors than we usually see here and much bigger battery banks will give more power and longer ranges. Again, their products and presentation are very pretty and very pricey. All one needs is a big wallet and a whole lot of room for batteries.
Fair winds,
Eric
Marina del Rey, CA
--- In electricboats@yahoogroups. , James Sizemore <james@...> wrote:com
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> Mastervolt has some good charts for what size motor you will need for a given boat size and weight
> http://www.mastervolt.com/download. php?id=4713
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> They also have some suggestions on needed components
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> http://www.mastervolt.com/download. php?id=4743
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> Sent from my iPad
>
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