Re: 30hp 1985 Evinrude battery size
We usually use a group 24. If your not running lots a junk; radio,live well etc
a standard rating will do.If your not likely to be stranded in the middle of a lake
if the battery dies and you can't hand crank I allways wanted to try a garden tractor battery. to save space and weight. Battery in my g tractor is on it 3rd summer basically untouched but do keep one of those little 1.5 watt solar "chargers"
hooked up winter and summer. As far as vibration it gets lots of it in that little tractor
so I don't think a boat would be a challenge.
