FORUM RULES UPDATED - The forum rules have been updated to continue to provide a friendly and safe environment for our member community. Please take a moment to review the updated rules and our terms of use and privacy policy. Click here for Forum Rules which has links to the 'terms of use' and 'privacy policy'.
In Other News . . .
You will notice a few enchancements to the forums to make your experience better. These include: Email Notifications, Thread Previews, Thread Starter Notation, and Emoji Options on the 'Like' icon. . .
Additionally, the merchant portions of the website have been updated and are now operational. . . . Check out iBoats for all your boating gear.
A lot depends on what you want out of a battery for your particular application. If you are just using it to start the motor then that is one thing but if you are running a lot of accessories as well you may want to consider dual batteries and a switch between them.
A liitle more info will get you a lot better answer.
By the way, welcome to iboats.
My boat has a 70hp and only had Navigation Lights and Bilge pump. It came with a size 24 battery. Make sure you don't get a too small of a battery, because you need the engine to spin fast enough for it to start.