T-Pain Is On A Boat: Re: [Electric Boats] Re: new lithium battery breakthrough?

Sunday, November 20, 2011

Re: [Electric Boats] Re: new lithium battery breakthrough?

I doubt it would make 300,000 hp either and I'm not going to do the math but I'l bet you could get enough juice to cruise at something close to hull speed in calm weather.

From: Carel Ruysink <c.ruysink@hetnet.nl>
To: electricboats@yahoogroups.com
Sent: Sunday, November 20, 2011 3:37 AM
Subject: Re: [Electric Boats] Re: new lithium battery breakthrough?

I also did not make the connection and BTW allthough I did not do the maths I do not believe that an aircraftcarrierdeck full of PV panels could produce the needed 300.000 SHP for an aircraftcarrier.

Carel

----- Original Message -----

From: Carter Quillen

To: electricboats@yahoogroups.com

Sent: Sunday, November 20, 2011 4:10 AM

Subject: Re: [Electric Boats] Re: new lithium battery breakthrough?

I'm glad to hear I wasn't the only one that didn't quite get this one.

And for the record, somewhere around 13-14% is new benchmark for PV efficiency and it's cost is down to like $1.25 a Watt right now. And you don't have to have an air craft carrier for a solar powered boat. Pontoon boats, launches, trawlers and a host of other barge like vessels have plenty of room over their decks for a sufficient solar array to power them real time off solar alone. With the 3 kW I'm installing on my boat I'll get 60 amps at 48V whenever the sun is shining and I've got room for 2 more kW when I get the money. That will provide over a 100 amps at 48V.

Having a backup generator for continuous night running and cloudy days is still a good idea but not absolutely necessary.

Carter

From: Don Parsons <tdparsons@msn.com>
To: electricboats@yahoogroups.com
Sent: Saturday, November 19, 2011 9:04 PM
Subject: [Electric Boats] Re: new lithium battery breakthrough?

Huh? So are your saying you would not welcome a battery that lasts 10
times as long and only weighs 100 lbs just because your solar panels
suck? I don't really get your post.
Don

--- In electricboats@yahoogroups.com, "Steve" <sstuller@...> wrote:
>
> Having a lot of battery capacity and a high acceptance rate is secondary if you are offgrid and have to rely on solar panels. Sunlight delivers 1 KW per square meter to the earth's surface. Current panel efficiency is around 10%. That's 100 watts per square meter. Assuming 5 hours per day that's 500 watt-hours or 1/2 KWH per square meter. A 50 KWH battery bank would require one hundred square meters of panels to recharge the bank in one day. If you have an aircraft carrier you would have enough room for the panels. Otherwise you have to rely on the ICE if you want to recharge a a large battery bank in a short time. Thanks. Steve S.
>
> --- In electricboats@yahoogroups.com, "leemurs72" <jt.yahoo@> wrote:
> >
> > For those that are still a few years away from a battery bank purchase, this is possibly great news...
> >
> > http://www.northwestern.edu/newscenter/stories/2011/11/batteries-energy-kung.html
> >
> > Recent research shows promise for allowing a 10-fold increase in capacity and charge acceptance.
> > It would be nice to have a 50kWh battery pack that weighs just over 100lbs...
> >
> > If it pans out, the it is a "that changes everything" breakthrough.
> >
> > Happy sailing!
> >
> > /Jason
> >
>

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