I need a battery for my sib to start my Johnson 30hp 2 stroke and will be running a fish-finder unit off it. I did search the forum but most are for much bigger outboards and more kit running of it...
Will a normal 75 ah leisure battery those used for camping work, one like this
Numax 75AH Sealed Leisure Battery | GO Outdoors
Ideally I want a smaller battery if possible but have no idea how much power an 30hp outboard needs. The sonar unit uses very little as I use to run mine on a 12v 7ah and will last all weekend.
Any recommendations on batteries would be greatly appreciated.