Good post Chris.
Indeed when considering cycle life, the lithium batteries look economical.
However, unless you’re using your boat a lot, that 2000+ cycle life isn’t useful and likely not realizable.
As you allude to, it’s not known yet whether these batteries will last long enough over time to deliver a slow 2000 cycles over many years.
In my case, with but 20-25 charge cycles per year, I’d need to keep this boat afloat and keep these batteries alive for 80-100 years to see 2000 cycles.
So I have to justify based on the other great points you’ve made regarding the LFP batteries.
-Myles Twete, Portland, Or.
From: electricboats@
Sent: Friday, January 29, 2010 9:55 AM
To: electricboats@
Subject: Re: [Electric Boats] solar canal rambling
When you take a look at the prices of LFP batteries, it can be daunting. But when you consider available energy, as opposed to nominal capacity, the price is not so bad. And if you consider lifecycle costs they are actually cheaper than lead-acids. For details, take a look at my analysis here http://currentsunsh
There is a downside to this. The technology is new, and the some of the figures, such as number if cycles, are manufacturer'
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