OK, guys, check my math on this.<br>Thanks for
the suggestion, Joe, although I have the problem that
my charger is automatic and therefore its draw
varies over time and Im usually not able to monitor it
closely enough to determine how long its run anyway. But
how about this:<br><br>If P (power in W)= V (voltage)
X A (amperage) then my 240AH battery bank converts
to (36 X 240) 8,640 watt-hours or 8.64KWH. Assuming
something like 60% charging efficiency, as Joe pointed out,
a full replacement of the bank would require 14.4
KWH. If electricity costs $.06/kwh then a complete
replacement of the bank would cost.$.86. Is that really
right?!<br><br>Based on my limited tests so far it looks more typical
that my boat will cruise most efficiently at about
4.3mph at 1 hp (20.8A). At that rate a 20 mi. cruise
would cost $.35.<br><br>Tell me this is right or at
least close.<br><br>Larry
