These Nickel-Iron batteries do seem to have big capacity, but their spec sheet doesn't mention weight. Comparing to the storage capacity alone, they seem to be about $0.65/Wh, Lithium-Iron cells are about $0.40-$0.45/Wh and AGM are $0.20-$0.25/Wh. Their lifespan in cycles according to manufacturers' spec sheets seems to be about the same as Lithium-Iron cells.
Fari winds,
Eric
Marina del Rey, CA
--- In electricboats@yahoogroups.com, Kirk McLoren <kirkmcloren@...> wrote:
>
> BTW these folks have good prices on Edison cells
>
> http://zappworks.com/battery_prices.htm
>
> no sulphation. lifetime is many times lead/acid
> I think price was a major factor but these folks mitigate much of that. Over 20
> years they would be cheaper than lead/acid
>
> Kirk
>
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