Sunday, November 14, 2010

Re: [Electric Boats] Picking batteries

 

A Peukert exponent of 1.00 means that there is no Peukerts effect at all and that the battery will deliver the same amount of energy at any discharge rate. I would guess that the Peukert's exponent for Nickel Iron batteries is higher than 1.00

Eric

--- In electricboats@yahoogroups.com, Steve Spence <steve@...> wrote:
>
> The edison cell has a peukert value of about 1.
>
> you can see how this works out at
>
> http://www.green-trust.org/peukert/
>
> Steve Spence
> Renewable energy and self sufficiency
> http://www.green-trust.org
> http://arduinotronics.blogspot.com/
>
>
>
> On 11/14/2010 12:00 AM, Tom wrote:
> >
> >
> >
> >
> > I see on the beutilityfree site that the cell Ah specs are given at the
> > 100hr rate. That got me thinking about Peukert effect losses with this
> > chemistry. Anybody know how these cells perform at high discharge rates,
> > say C/5 and C/2?
> >
> > -Tom
> >

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