James and others,
You might want to track battery prices by watt-hours (wh) to better compare the different types of batteries available. The LiFePO4 160AHA batteries that I just ordered are only 3V (nominal) per battery, which works out to around $.40/wh, just like the batteries that you quoted in your post. Since most lead-acid batteries come in 6V or 12V, just using Ah can be pretty misleading, I've included some examples:
An Odyssey 12V PC1800 cost $650 for 217Ah or $3.00/Ah, but really works out to $.25/wh.
A Trojan 6V T-105 at $150 for 225Ah looks like $.66/Ah, but calculate to $.11/wh.
Similarly, performance quotes that list the amperage draw for a given boat speed are not particularly useful without the system voltage. Again, using watts for a metric is more useful to people that may not be running the same voltage.
Fair winds,
Eric
--- In electricboats@
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> Robert,
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> Do you have a source for Nickel-Iron batteries? And if so what is the price per AH? I can get 100AH LiFePo4 for a cost of $120 that makes the cost per AH $1.20, But at a reasonably cheaper price I would be interested in Nickel-Iron. They are heavier and take more care and feeding: Need to be watered. But they do last forever and like to be used. Lasting forever is a good selling point!
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> I was also eyeing the AC 50, have you done any research into mounting, Do they require a trust baring.
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