I intend to convert my 27' 7000lb sailboat to electric over the winter.
I've been reading on this group that lithium batteries should have a
~2,000+ cycle lifespan compared to ~750 for AGM, but I've also read that
one should only expect batteries to last 5-7 years. Does this 5-7 year
life expectancy also apply to lithiums? If so, it would appear that one
would need to more or less discharge the lithium pack every day for it
to make sense (365 days x 5-7 years = 1825-2555 cycles), otherwise the
capacity for these extra cycles would not get used.
For those of us that are lucky if we get out on the water 30-50 days in
a year (a range of 150 - 350 discharge cycles over a 5-7 year period),
what battery type would make the most sense? Also, any tips on where
to source these batteries inexpensively?
Thanks for any advice.
Regards,
Owen
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