you know I luv ya like a brother (ok, so I tolerate those twits, but you know what I mean)
but mary, joesph and baby jesus, not everyone needs a bank big enough to power las vegas. remember what the guy said.
"OK. My boat is an S2 8.0B with an alternator and full charging capabilities. I only plan to use limited electrical, such as nav lights and radio when needed."
also he has a saildrive... so that gives him what, a 20 amp alternator?
so put your solar stik down for a minute willya? (tongue firmly in cheek)
go to pepboys, sams, wallyworld, napa, tractor supply house and grab a group 31 wet cell for less than 75.00,
(110 Ah/535 CCA) hook the darn thing up to the big red switch and go sailing!
Or, if he has a wild hair, got nutz with a 4D! (160 Ah, 800 CCA) for a hair over 120.00
yea, yea, acid spills, venting.... pfffft, if he heels that
S2 -8.0 over far enough to spill battery acid, that'll be the least of his problems.
cost justification? youbetcha, agm/chromeplatedtittleatorvalves and 400.00 bucks for a battery that will last 5-6 yrs just doesn't pass the smell test in this case. The wet cells even with heavy cycles will last 3-4 years, at least.