Wayne.B wrote in
:

http://www.duffyelectricboats.com/


Wow...Rolls Batteries (Would you use anything else in a Duffy?!) lists 8D
batteries between $433 and $907 each on:
http://www.staabbattery.com/rolls_de...atteries.shtml
We'll need the biggest capacity superbattery as only the best will do.

$907 each times 16 batteries equals $14,512 if you replaced them TODAY.
With a 7 year warranty that's conspicuously missing from the warranty
explanation webpage I'm not sure how long the REPLACEMENT warranty actually
is, but from the look of the other batteries, a 72 month battery only
replaces for 18 months. Beyond that it is pro rated down to nothing at 72
months. Anyone had an old Rolls deep cycle like the 8D replaced by them?

If they last 3 years before the capacity starts limiting cruising range
uncomfortably, at today's awful inflation rate over the next 3 years of,
say, 15%, replacement's gonna cost you around $16,000 to 17,000 PLUS
INFLATION EVERY 3 years....or so...

Sure makes what the boatyard told you it was gonna cost to overhaul the old
3 cyl Yanmar look real cheap after 7000 hours, doesn't it?

And, curiously, the Yanmar doesn't eat itself just sitting at the dock like
lead-acid batteries do.

OUCH!