Not to doughty your googling abilities $65,000??? Each Odyssey 2250 is
126 amp hours at 400 cycles and cost $429 (1)
A higher useful energy LiFePo4 pack is 100 amp hours at 2000 cycles
and cost $110 at 3.2 volts X 4 = 12 volts at $440 (2)
So for practically the same price you could have got more useful
energy lighter pack and longer life. Albert the charger would have
cost you $3000 for the LifePo4 pack but for four times the useful life
that would in my opinion have been a small price to pay. Seeing as
both chemistries are new neither has any history advantage of the other.
Sounds like you are doing something similar to my plans. Please do
keep me posted! My current plan is to use two 50kw Azure Dynamics
AC55 with a similar sized LiFePo4 pack. Sounds like your a few months
ahead of me so will be interesting to compare pack useful energy for
draw once I get caught up.
(1) http://www.septechn
(2) http://www.evcompon
On Jul 25, 2009, at 11:14 AM, whsouthworth wrote:
> I'm using Odyssey TPPL batteries in an electric refit right now. The
> bank consists of 24 Odyssey 2250 batteries for a 326v bank (at
> float). I'm driving a 50kW UQM motor as the propulsion motor, a 10Hp
> Emerson motor for driving the hydraulics, and there's also a 7kW
> inverter, and a bunch of DC-DC converters. I looked at LI-ion but
> the cost is about a factor of five higher. I would have needed a
> $65K battery bank.
>
> The generator for my rig is a 40kW Westerbeke genset with 240vac 3-
> phase output. This goes to a water cooled full-bridge rectifier to
> generate DC for the bank.
>
> As we move to sea trials, I'll report back on the experience with
> the TPPL batteries.
>
> --- In electricboats@
> wrote:
> >
> > HI EVERYONE,
> >
> > I have been looking at alternative battery chemistry for several
> years and could never justify the extra expense of LI-ion. Then
> yesterday I received the current issue of Pro Boat Builder. Nigel
> Calder has an article on page 52 about his choice of battery
> chemistry for his boat.
> >
> > Go to <http://www.proboat.
> 2009 issue to read his article. You might have to register but it is
> free.
> >
> > You just might decide to use TPPL (thin plate pure lead) batteries
> instead of any LI-ION chemistry.
> >
> > While you are on the Professioal Boat Builder site check out the
> past issues for other articles by N.C. He is going electric in a big
> way on his new boat, but writes for the common boater which includes
> most of us.
> >
> > Enjoy,
> > JJ
> >
>
>
>
[Non-text portions of this message have been removed]
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch format to Traditional
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe
No comments:
Post a Comment