By the way Cold cranking amps are about twice as much as Marine cranking amps. Thats why I use automotive Die Hards, a 550 cold cranking amp battery is equivalent to a thousand amp marine cranking battery. . Captain Al Pilvinis "M/V Driftwood"--Prairie 47 2630 N.E. 41st Street Lighthouse Point, Fl 33064-8064 Voice 954-941-2556 Fax 954 788-2666 Email yourcaptain@earthlink.net Website http://home.earthlink.net/~yourcaptain