What Battery?

sixgun95

Seaman
Joined
Jun 28, 2007
Messages
50
What are the battery requirements for a Merc 5.0 EFI, 260 hp? I need one and have no reference.
 

642mx

Lieutenant Commander
Joined
Apr 19, 2008
Messages
1,588
Re: What Battery?

The biggest battery you can fit in it. I use Interstate srm-29's (2 of them).
 

smokeonthewater

Fleet Admiral
Joined
Dec 3, 2009
Messages
9,838
Re: What Battery?

a lawn mower battery will start it but you can't have too much battery on a boat... I have 4 of them.... as above a 550 will do but if you are gonna have just one get the biggest dual purpose battery you can fit/afford
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
50,226
Re: What Battery?

I recommend the biggest battery that will fit. if you have only room for a single battery, then I suggest one of the combination deep cycle / starting batteries.
 

Silly Seville

Senior Chief Petty Officer
Joined
Dec 5, 2009
Messages
798
Re: What Battery?

Biggest battery(s) money can buy. Not many folks carry jumper cables on their boats. Get a selector switch too. Separate your house from your starter!
 
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