Eric,
You will electric boats out there that go very fast but many plug along at hull speed.
John
On Wed, Apr 20, 2011 at 2:47 PM, Eric <ewdysar@yahoo.com> wrote:
John,
I agree with your recommendation for Lithium batteries, I have a 48V x 160Ah battery bank in my sailboat.
But, you also included a key metric in your post. The Lithium batteries alone will cost $8000 and all of the Cruisers Yacht VillaVee boats that I saw listed for sale cost between $7000 and $9000. All of these boats seemed to be in good shape.
I believe that the twin drive costs including chargers and the rest of the conversion would exceed $8000 without the batteries. I can't believe that many owners would want to spend more than twice the cost of a replacement boat and reduce their top speed by 75% and their range to less than 2 hours.
Honestly, would anyone here spend their own money on a project like that?
Fair winds,
Eric
Marina del Rey, CA
--- In electricboats@yahoogroups.com, John Raynes <johncraynes@...> wrote:
>
> Patrick,
>
> To run your 28' powerboat on electric power I suggest 48 volt x 200 AH
> Lifepo4 battery packs for each motor and they would cost up to $4,000 each.
> Many people would consider that too expensive and not reasonable. I agree
> that is very expensive but your operating cost to run your boat would be 10%
> of the cost of your gas powered engines and there would be almost no
> maintenance. AGM batteries are less expensive but will not last as many
> discharge/recharge cycles. Please understand my electric conversion was
> successful but experimental and I really wanted a baseline of information to
> design a second generation more advanced electric system. Today you have
> drop-in electric propulsion systems that are proven technology. The
> limitations of electric boat propulsion should be acknowledged if you are
> not aware of them. Be aware that most electric boats cruise up to 5-6 mph
> or at hull speed. Having said that but always wanting to push the
> technology envelope you can get loads of power with an electric conversion
> and cruise along faster but you need lots of battery power and are limited
> in range before you have to recharge the batteries. Adding a genset will be
> too much weight although I have not done the math. What I used for my boat
> was 2 packs 48 volt x 100 AH and I was powering one motor. I have a
> serious passion to power any boat with electric power and I encourage you to
> take a close look at the possibilities.
>
> John
>
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