Hi guys,
Sorry, I know this must come up a lot, but what is
a good source for T-105s delivered at this price?
Of course,
other battery supplier recommendations also welcome.
Thanks,
Paul
--- In electricboats@...,
"Eric" wrote:
>
> John,
>
> Let's do that. We'll even double the number of T-105s to get
the weight closer to the 200Ah 12V NiFe array.
>
> 2400Wh
NiFe = 13.2" x 32" x 13.6" = $1760 FOB
> 5745 cu. inches, 280
pounds, 1920Wh usable @ 80% DoD
> 5400Wh T-105 = 10.4" x 28.6" x
10.7" = $600 delivered
> 3182 cu. inches, 248 pounds, 2700Wh
usable @ 50% DoD
>
> The four T-105s have 40% more usable
capacity, are 44% smaller, are 11% lighter and and are 1/3 the cost of
the 200Ah 12V NiFe bank. Even running the NiFe batteies to 100% DoD
gives less capacity than the T-105s at 50% DoD. Using a 50% DoD on the
FLA batteries also gives you a bigger reserve in case of an
emergency.
>
> But as I've said before, everyone needs to
figure out what is most important for themselves, every choice comes
with tradeoffs. The cool part is that we each get to build our boats
any way we like. I'm looking forward to hearing how the first NiFe
boat in this group turns out.
>
> Fair winds,
>
Eric
> Marina del Rey, CA
>
> --- In electricboats@...,
john briese wrote:
> >
> >
All this "Math" forgets using 50% of charge on T105s and using 80 to
100% on Nife.
> >
> > Lets complete the
math.
> >
> > To: electricboats@...
>
> From: ewdysar@
> > Date: Tue, 16 Nov 2010 08:47:47
+0000
> > Subject: Re: [Electric Boats] Picking batteries -
NiFe
> >
> > Kevin,
> >
> > I
did the math with the data on the link that you provided.... Looking
at the 200Ah cells, they are 26.4 pounds dry or 264 pounds for a dry
200Ah 12V (2400kWh) battery. Add water and you're probably past 280
pounds or 8.5Wh/lb.
> >
> > Alternatively, a T-105
weighs 62 pounds (according to Trojan) and is rated for 225Ah @ 6V or
1350Wh. That works out to 21.8 Wh/lb. Take two in series and you've
got a 225Ah 12V battery that weighs 124 pounds.
> >
>
> Are you really sure that size doesn't matter? Lets compare the
200Ah 12V NiFe to the 225Ah 12V T-105s
> >
> >
2400Wh NiFe = 13.2" x 32" x 13.6" = 5745 cu. inches, 280
pounds
> > 2700Wh T-105 = 10.4" x 14.3" x 10.7" = 1591 cu.
inches, 124 pounds
> >
> > The NiFe battery is more
than 3 times the volume of the two T-105s for 10% less rated capacity.
> >
> > I'm not passing any judgement, just doing
the math so that people can decide for themselves.
> >
> > Fair winds,
> > Eric
> > Marina del
Rey, CA
> >
> > --- In electricboats@...,
Kevin Pemberton wrote:
> >
>
> > > Eric,
> > >
> > >
According to this page batteries supplied by Ironcorebatteries
> > > 100Ah
weigh almost 100lbs
> > > for 12v pack...
> >
>
> > > Kevin Pemberton
> > >
>
>
>
