Re: Battery Sizing - am I crazy?
The one virtue of the 12 volt battery is voltage. You are getting twice the voltage for half the weight. Two 6 volt GC's weigh about 120# for 12 volts while the 12 volt battery is 60#. If you want 24 volts two 12 volt batteries weigh 120 # but you need four GC's at 240# to get 24 volts. Usually sailors worry about weight. Unless you absolutely need the extra capacity from the GC's, 12 volt batteries have the weight advantage. Thanks. Steve S.