Battery Suggestion

[StriperFvr]

What is the proper size battery for my 150HP Mercury Outboard. I have 2 batteries onboard and run normal electronics (GPS/Fishfinder, Radar, VHF, Stereo)?

What brands of standard batteries does everyone reccomend?

[BassyiusMaximus]

Is your Mercury an OptiMax?, if so, they need an MCA or CCA of 1000. Even with that said, I've used and have been using a 650 A battery with no problems and have used 650 A batteries in the 150-HP Mercury I had used before repowering. Right now the OptiMax has a Marine battery I got from Wal-Mart along with a 2nd battery I got from West Marine on sale, Boaters World sells Exide's and in my boat it came with 2 1000 CCA batteries that are Interstates.

[Offshore24]

I use two Group 27 AGM batteries. Manufactured by Lifeline. I gave up on lead acid batteries in boats.

[keeperreaper]

I run 2 exides in mine. Have been good to me so far.......

[teaser]

I use 2 batteries one for starting it's a 750 CCA and one for electronics after it's started that one's a deep cycle.