[ausev] http://www.abc.net.au/news/newsitems/200607/s1687883.htm

[Josh Handel]

power management would be quite a task with that many batteries ;-)..

I don't know about now, but when I used to race RC cars competively we
used to go to great lengths to match cells and NiMH had nasty memory
problems.. (we would do quite  alot to make sure a battery was really
really discharged before we put it back on the charger)...

So I wonder what the cycle time on a modern NiMH sub C is these days?

Josh

On Mon, Feb 23, 2009 at 2:14 PM, Brian Lasseter
<blasseter.cmpe01 at gtalumni.org> wrote:
> On Mon, Feb 23, 2009 at 1:29 PM,  <bytedawg at bytetamer.com> wrote:
>> http://www.abc.net.au/news/newsitems/200607/s1687883.htm
>> AA battreries making the news, maybe my electric motorcycle project
>> has a new power source.
>
> When I was planning my electric car... I actually priced out using
> rechargeable AA batteries for my car.  The cost/benefit analysis makes
> it an attractive option.  For 5x the price, I get a battery pack that
> lasts twice as long for half of the weight.  (The lead acid and AA
> batteries are listed as having the same kwh... but in a lead acid
> battery, only half of the energy is usable thanks to Peukert's Law.)
>
>
> US-8VGC batteries (144 volt pack)
>  18 x $72.95 = $1,313.10
>  18 x 64.50 = 1161.00 lbs
>  18 x 170Ah x 8v = 24.48 kwh
>
> AA size NiMH batteries (144 volt pack)
>  10200 x $0.67 = $6,834.00
>  10200 x 0.06 = 632.40 lbs
>  10200 x 2.0Ah x 1.2V = 24.48kwh
>
> Sub C Power Tool NiMH cells (144 volt pack)
>  5760 x $2.00 = $11,520.00
>  5760 x 0.12 = 708.48 lbs
>  5760 x 5.0Ah x 1.2v = 34.56 kwh
>
>
> --
> TTFN,
> Brian "Lasso" Lasseter
>
> "No Sane man will dance."   -Cicero (106-43 B.C.)
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