What size battery do I need for my outboard

[Snowlife]

My boat has a 1979 Johnson 150HP V6 outboard and I cannot find how powerful the battery should be. I bought a Everlast Marine Starting Battery. It is a 625 cranking amp and 500 cold cranking amp.....should be fine, right?

 

[ezeke]

Re: What size battery do I need for my outboard

The bigger the better. There's some expert advice here: http://cdielectronics.com/downloads...ues, Regulator-Rectifiers and Tachometers.pdf