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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