It means that the investment that I make now will last me till the tech curve and cost of better systems are available. So, a ten year life span or longer is important.
--- In electricboats@yahoogroups.com, "Myles Twete" <matwete@...> wrote:
>
> Does a 2000 cycle life really mean anything to you as a boater?
>
> I mean, do you expect to use your boat more than 100 times per year on
> average?
>
> If not, you'll be hard pressed to see 2000 cycles as this would require 20
> years of use and there's reason to believe that these lithium cells won't
> last more than 10 years.
>
>
>
>
>
> From: electricboats@yahoogroups.com [mailto:electricboats@yahoogroups.com]
> On Behalf Of drmsudo
> Sent: Thursday, August 26, 2010 9:05 AM
> To: electricboats@yahoogroups.com
> Subject: [Electric Boats] battery bank upgrade
>
>
>
>
>
> I changed over my Ericson 27 Atomic 4 to electric propulsion three seasons
> ago. I have been running it on 4 group 27 92ah deka batteries. This has
> worked well for day sailing. But, we would like to start cruising and I
> would like to have a range that could take us across Lake Michigan (about 80
> miles). Most of the time we are sailing, but I want the confidence that we
> could go the distance if needed. I am thinking of using a Lifepo4 batteries
> from a company called HiPower (http://www.evequipmentsupply.com). The cost
> of the batteries alone would run about 4k, then I would need a BMS and
> charger to complete the system. The main reasons for the Lithium batteries
> would be weight savings, ability to deeply discharge without damage to
> batteries, and the number of cycles (2k) that can be charged. Anyone have
> suggestions or experience with the LiFePo4 systems? Other sources for
> batteries and how to build? I did the conversion myself, but I have no other
> experience with DC systems. Any input would be helpful. Thanks.
> Brian
>
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